VW A3: Oil Pressure Switches (2.0L) Explained
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- čas přidán 9. 09. 2024
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Thank you for being so long winded. Your explanation and demonstration and tips aided immensely in troubleshooting my oil light with alarm coming on at 2000 rpm's. In my case the high pressure switch would never ground out. It had a constant 12 volts at any RPM. Thank you. I have a 1985 VW Jetta 1.8L engine.
George Thomas Thanks for the comment & thanks for watching!
I am a loyal VW fan. That was my 2nd TDI and I now have a mk4 TDI Jetta. I sold it just because I moved out of the country for a while. I came back and immediately got back in the game. In fact, I have used your videos for multiple projects including a recent timing belt I did.
Very nice explanation of the low and high pressure oil switches. I'm sure that your viewers can benefit from this information. Thanks for sharing your time and knowledge.
Fan Freakin' Tastic. A real life Cabrio guy that knows the darling of the VW series. Sub'ed
Thank you and thank you for watching.
Thanks man atleast I have some confidence now on starting to check my cars faults with the oil pressure alarms and light.
Thank you for watching! Let me know what you find.
I will check it when I get home from work.thank you.
There you go Thomas! That sounds like a good idea for your Euro viewers.
Ah you're doing just fine Thomas and you should give yourself some credit. Being how you're up in Canada, I take it that your first language is French. And if so, trust me when I say that your English is a LOT better than my French even when I took two years in high school. I still say a great job in the explanation.
thx for replying back in a timely manner. you have help me out much such so far, keep making these great videos!
Thank... let me know what the pressure turns out being. I'm still leaning towards a bad switch.
Very informative. Excellent video
Thank you for watching!
Thanks for the video... Trying to diagnose that rattle and Oil Pressure light and now I am steered in the direction that I should be trading in my car soon.
Chris West If it is just hydraulic lifter rattle... the engine can still be saved. Make a video and let me see what it is doing.
thanks for video, I'm at wits end. new switches, proper filter and oil, proper press. try the test leads tomorrow thanks again enjoyable insightful video.
What is the issue? Oil waning buzzer? Ground the wire at the oil filter flange and see if it still happens.
the issue is wrong switch for high pressure. it will be here Monday.found one at napa other stores don't carry anything but 0.3 bar for low press.
R.K. Farley That's the most common issue! Thanks for the update!
amazing... so that's where that irritating sound comes from... I bought a 1999 city golf which was not well looked after so I have all this little odds and ends to fix... thanx for sharing your knowledge... hope to see more...
+Angelique Ackermann Thanks for watching & taking the time to comment!
For anyone else, my high pressure sensor was working dandy for 200K on my 98 ahu tdi. then the buzzer came on and the oil light, pulled over and there was barely any oil on the dipstick. threw some 1540 in it and luckily got it home, i thought it was leaking at the oil filter housing but turns out it was leaking inside the high pressure oil switch. Luckily my high pressure switch still worked or else i would’ve blown my engine. Happy i caught it in time.
Good to hear it wasn't anything major / turned into anything major!
Love the video...Great explanation of how the system works..Dankei viel Thomas
Yes thanks to the video i figure out they gave me the wrong one thanks for the help im getting the right one today
+cesar palafox Thanks for the update!
Thankz really helped on my jetta 3
Thank you for watching!
Thank you! Had I known this back when I had my '98 TDI...I fought with it for a while till I sold the car for other reasons.
Thanks for all of the info! I am picking up a 99 cabrio (convertible) tomorrow for $500 that has this problem. Now I know which sensor to change since the guy said the alarm came on but the engine does not knock.
Thank you for watching, let me know if a sensor fixes it!
Thank you for this vid. This is long but detailed, You helped me solve the blinking light and buzzer thing that troubled me for weeks. THANKS AGAIN.
Thank you for watching!
Oh man Tahnk You this help me a lot, tahts the same proble I have in my Jetta, I'm gonna Fix it.
Thanks for the Video Hoss!
+MEAlstonIII Thanks for watching!
super good informative video. Thanks
Thank you for watching!
Alright I'll try it out and see if it's good. Thanks!
My oil pressure light comes on bright red with key in Aux. position. After starting, the same light is on but very dim (barely visible in daylight). The light stays this way after pulling the wires to both the low and high pressure senders. Based on your video its time to check both wires and the instrument cluster. Its a 89 Vanagon with a AHU turbo diesel engine swap. THX
Simon Clark Yes, could be a wiring issue... maybe even a fault with the oil pressure warning system circuit board in the instrument cluster.
Simon Clark i
Excellent video, i had a problem with my mk3 months ago, the dealer sold me a mk2 oil pressure switch instead the right hps and the alarm was turning on each time i rev above 2200, now i know why ! If you dont mind sir, if by any chance you can make a video about the reverse light switch trouble shooting or the reverse switch on the tranny, would be great, mine its not working , ive checked fuses, bulbs but seems fine Regards !!!!
I changed both, problem fixed it, Thank you, BTW what car do you use?
I have a question, a few months ago my A3 2.0L ran out of oil, there was a leak in the oil filter housing. The only way I knew something was wrong was that I could hear the lifters, and pulled over right away but my oil pressure light never came one, or chimed. The light does come on when I turn the key though.
Thank you, thank you, than you!
Thank you for watching!
and one more ? y dose my clutch slip when I try to accelerate to fast but when cold it dose not do it thank u your videos are so helpful..
+cheyenne smith Manual clutch cable or self adjusting style? Could be a worn / old clutch. How old is it?
Ok a previous owner of my 97 jetta put an oil pressure gauge in the car I'm just trying to stop the beep cause it has good pressure it dose have a 2.0l engine
If the yellow wire is disconnected... connecting it to ground should keep the buzzer off. Or remove the pressure gauge and reinstall the stock pressure switch.
Can you reccomend a decent aftermarket oil pressure gauge for Cabrio 2.0 engines? Maybe even a video on how-to for mounting the interior gauge.
Nowadays there are a lot of aftermarket oil pressure gauges available to choose from. Depending on where you want to mount it and how big you need it to be, it all depends on you. You can even find gauges that can handle multiple outputs. By a push of a button you can view oil pressure, coolant temperature, rpm... but setups like that can get pricey. A single purpose gauge like this might suit your needs (check with them to make sure that the wiring is included).
www.ecstuning.com/b-prosport-performance-parts/electrical-oil-pressure-gauge-52mm-w-sendr-white-led/pstop270-12~psp/
It would go away, but it resets with flashing light & beeping as soon as hit 2000 rpm. I need to get a presure gage to see were we at with pressure.
If this happens even when the engine is cold (thick oil)... then I don't think that it is a loss of pressure problem. Yes, attaching a pressure gauge would help verify what the pressure actually is.
Did all these tests and oil filter housing wire doesn’t ground after the car is warmed up, it’s a 1994 golf with only 87k miles could be a bad cluster? As some times my cluster does not illuminate with the headlights on
Maybe... I don't know how exactly you tested / checked things. Verify what actual oil pressure is... with a mechanical gauge. Once you know that pressure is OK, you can take your time finding the "electrical" issue.
hey there, great video you help me with this issue with oil light flashing and beeping. So I did the steps and had to switch out both of them out, they were not working properly. After switching them for new ones I still get the flashing and beeping. Any suggestions on what else it could be or I can do?
When you attach a test light to battery positive and attach the other end to the oil pressure switch by the oil filter... what happens?
What if the light comes on only at idle (no buzzer) but as soon as you drive or rev past 1000 rpm it goes away. What do you make of that? New sensors all around and new oil pan so no sludge or anything. My guess was maybe oil pump tube from block to pump?
You need to check actual oil pressure at the head and compare with the pressure rating that is on the pressure switch. If this happens only after the engine is fully warm (thinner oil) and the pressure sensor is the correct one, try using a thicker oil. What oil are you using now?
Thomas EXOVCDS 5w30 but fogot to mention it’s a Mk3 vr6 engine
0.3 bar low pressure switch? You might have one with a slightly higher rating... the other switch is the high pressure switch, it's rated for 1.4 bar, but works opposite of the low pressure one. Low pressure switch is normally closed and opens with pressure. High pressure switch is normally open and closes with pressure.
yes I do have It
+cheyenne smith Have what?
Hi, good video, good explanation. Just wondering if you could help me. I have the same problem on a 2000 new beetle 2.0 l engine...oil light and beep coming out after reving up the engine,good oil level at the deepstick. I've changed the oil pressure sensor, just below the steering oil tank. I'm thinking to do as well as you did, to wire the ground to that sensor switch..please can you explain me how yo do it..some DIY..pictures?! thank you..all the best!
+WAN Hi... the beetle is slightly different. It uses a single sensor at the oil filter housing / flange. Grounding the wire (like in the video) will not quite work the same, as there is slightly different logic that the instrument cluster uses. Meaning that if you were to ground the wire, the buzzer will still come on, because the cluster is looking for a specific no-ground, ground signal. Remove the pressure switch and attach a mechanical pressure gauge... check actual oil pressure. If borderline, you can try using thicker oil as a band-aid / temporary fix. Checking for oil strainer restriction, worn bearings... etc, would be the next step.
+Thomas EXOVCDS thanks a lot for the quick reply..i'm using 5w30 Castrol oil..i'd hope that it could work the simplest way (cheating a lil bit) 😊.thanks a lot, keep up the good work!
good video. i have a 2002 jetta gls... can the oil pressure switch thats connected to the oil cooler housing leak ?
Yes it can... the A4 / mk4 oil pressure switches don't seem to leak as often as the older generation switches. Make sure that the oil cooler is tight, could be an oil cooler seal leak instead. Remove the oil filter and tighten the 27mm nut that is visible.
My oil light flashes and Yells, but only when I'm driving in between 2rpms-3rpms, so I always have to rev it higher then that. It doesn't turn on while. I'm hoping it's a faulty sensor? 😬
And adding Lucas oil makes the light come less often
@@hacks5093 change the sensor at the filter flange (with a sensor of the correct pressure rating) and see what happens. If it only happens once the engine is warm, then oil pressure is borderline at that rpm, due to whatever reason.
it dose need some work it was running then its stop in the workin my battery is bad so I jumped it I runns then dies as soon as the jumper cables come off
originally and adjustable
+cheyenne smith Adjust the cable so that there is a bit of freeplay when lifting the cable... if the cable is too tight, it can cause the clutch to slip.
the light is on at idle, when give it gas it goes away just like in your video, but at 2,300 rpms.
The light should come on / stay on before the rpm reach 2000 rpm (switch at the filter). The light should go out as soon as the engine is running... switch at head.
I have a feeling that you have a faulty switch at the filter flange. Remove it and read the pressure rating (should be stamped at the base of the switch.
If you remove the wire from the switch and attach it to a clean metal surface of the engine (by holding it or by using a jumper wire)... what does the oil light & buzzer do then?
Thomas I have 2002 vw jetta oil pressure comes on at 1900 rpm or at a stop when rpm go above 1900 light turns off check pressure at 59.psi thank
Try a new switch... make sure it is the correct one / pressure rating.
We did in stall a new switch it looks the same as the one that came. Off Have you ran into this problem before thanks again.
I did NOT know... the more information I have, the better my replies.
Does it happen when the engine is cold or only when hot?
What is the actual pressure at 1900 to 2000 rpm when slowly increasing rpm to that level?
What oil? Any engine noise?
Is the wiring OK? Have you verified with a scan tool checking the "Instrument cluster module" live data of the oil pressure signal (OK/Not OK) when manipulating the oil pressure sensor wire to ground & off?
Mexican 1999 a3 jetta came with 1.6-2.0 bar,D shape long conector like mk4s,can it be replaced with the old ones with spade conector and lower bar like the 1.4 or the 1.8,any benefit using one with lower bar?
Johnny Gonzalez Should not be a problem as long as the switch functions the same (either opens the circuit when pressure is present or closes the circuit when pressure is present).
Standard , and it was the HPS
Thank you so much!!!!, my high pressure switch didn't go off when I connected it to ground, so can just get a connect the cable to a wire and ground all will be good ?
+Patricio Reyes Yes, but you will NOT get a warning when pressure actually IS low... only the idle pressure switch will give you a warning (it will also give you a warning at high rpm, but not as soon).
Okay great, so how can I fix that problem, there is already a new pressure switch and it made that same noise... Soon after I watched your video and grounded it with the cable any suggestions? Thank you
+Patricio Reyes If the warning light & buzzer come ON (at 2000 rpm) when the oil pressure switch is connected to the wire, then the pressure switch is bad / the wrong one or you have an oil pressure problem (bad pump, bearing wear). Have you checked actual oil pressure? What color is the oil pressure switch?
+Thomas EXOVCDS the color of the switch is brown and the original one was blue
+Patricio Reyes If it is a 2 liter engine, then you should have a White pressure sensor on top of the oil filter flange and a blue sensor at the side of the cylinder head.
Please tell me how to remove the connector on the HP switch?!! thx
Should just pull off... year, make, model, engine? Some switches have little tabs that need to be pushed first... to release the connector.
But will not replacing the switches cause damage to the motor?
A faulty switch will not cause damage to the engine. Not replacing a faulty switch will not cause engine damage. If the switches or wiring are bad, why would anyone not want to replace them / fix the problem? How will the driver get a warning if / when oil pressure actually is low... if the switches or wiring are not replaced?
My oil light doesn't blink when the key is in the on position
2.0L engine? Replace the oil pressure switch at the cylinder head.
My low pressure switch grounds only after I start the engine. What does that mean?
Possibly wrong switch?
Year, make, model, engine?
What color is it? What's the pressure rating on the bottom of the switch?
@@EXOVCDS It's the 2 liter 4 cylinder engine. Jetta. '98. I think it's the ABA. I know the switch hasn't been messed with for at least 4 years (as long as we've had the car) and the oil light just started flashing yesterday. I know they can break but it's weird to me that it was operating, just exactly backwards of what it's supposed to. Anyway I replaced it and that resolved the issue.
Thanks for the extra info... it could be that when it failed, things internally for some reason function backwards. I've never had one apart, but as far as I know there's a spring loaded diaphragm and a small ball bearing. If the ball isn't sitting / making metal to metal contact (due to the diaphragm) when the engine is off, then the light can't come on. With oil pressure pushing against the ball (once the engine is running) the ball could make contact with something if the diaphragm is bad... turning the light on. In any case, good to hear that a new switch solved things!
@@EXOVCDS Wow that makes sense. Thank you. You've been very helpful and thorough.
So my issue is almost the exact opposite with my 97' Jetta GL 2.0L.
When the engine is cold and the oil is thick there is absolutely no buzzing and oil pressure warning light. I then drive 55+ mph (88 km/h) for a while until the engine is warmed up.. once I reach this point, and slow down my speed to around 2300 rpm or lower, the flashing and the buzzing begins.
Engine warm and driving at 2300+ rpm = no buzzing/flasing.
Engine warm and driving at idle through 2300 rpm = buzzing/flashing.
I ordered a high pressure switch - as you said in the video, this should help with the buzzing/flashing.
Please let me know if you have any other thoughts? Thanks
If pressure is good above 2000 - 2300, then the buzzer & light will stay off.... your pressure is probably just borderline at 2000 to 2300. If the same thing happens with the new switch, try thicker oil at your next oil change. 15w40 or 20w50.
***** Thank you! If this new switch doesn't fix the problem I will definitely try using a thicker oil. Great video by the way, it was very helpful!
Hello, I had a problem with my 95 mk3 1.6l aek. I was driving and did not really look at the tach, but it could be that I was not even over 2k rpm, since i was doing 50kmh in 4th or 5th gear. So the light started flashing and buzzer went off, but it shut off after few seconds, after 5-6 flashes maybe without cycling the key. I stopped on the side of the road started the car again, and the problem hasn't manifested again. I do need an oil change like right now. could it be an oil change warning? I have the car for only a month, and I have never owned a VW. Maybe someone could shed some light on this? And I checked the wiring, looked good.
Not an oil change warning.
Change the oil and check it again. Oil light & buzzer = no signal from the "high" (2000 rpm+) pressure switch. The low pressure switch is mainly for idle pressure.
I edited my first reply... read it again.
I have a low oil pressure problem. My 1998 Jetta runs fine but when my car fully warms up and runs an extra couple minutes the warning light will then come on. Any help?
2.0L?
Only at idle? What oil are you using? 5w30, 5w40, 10w30? If it only comes on at "warm idle" and a mechanical pressure gauge confirms that the oil pressure is borderline (at warm idle), switching to a thicker oil like 15-40 or 20-50 can help keep the light off. Aside from that... if it is a higher mileage vehicle, then there's internal engine wear which is causing the low oil pressure. A worn oil pump or weak oil pressure relief spring can also cause low oil pressure. If the slightest increase in RPM causes the light to go out... you can also install a lower pressure rated "low pressure" oil pressure switch at the cylinder head (it will not trigger the light as early.
@@EXOVCDS 2.0L aba engine with 203 xxx miles. I use 10 w 30 Castrol gtx high mileage. (Note: I took my car in to a mechanic my last oil change ). The light does go off after I accelerate, I'm not sure about slight increase in RPM I haven't tried that.
@@thekingofkings641 15w40 or 20w50 might solve things for you and would still be OK oil to use year round (depending on where you are).
@@EXOVCDS I live in Salt Lake City Utah. Would it be okay in the more extreme cold?
@@thekingofkings641 For cold weather (-20F) you would want the oil to have low viscosity and once warm act like a thick oil. Castrol makes a 5W50 oil.
thank u so much I bought a mk3 2 yrs ago and stupid buzzer has been a problem ever since. i was one of those just add oil ppl so who knows what damage I've done lmfao...
Thank you for watching!
My golf oil light comes on and beeps randomly but the oil level is fine would it most likely be pressure sensor or level senor? :/
What year golf? No level sensors that I am aware of unless it is a vr6 with a level sensor in the oil pan. What size engine in your car?
***** It's 2001 1.4 :s I'm not really sure the oil is good and the light randomly comes on and it beeps. :s
+KINGCALLO Where are you at? We never got the 1.4l in North America. I can send you some information tomorrow... I'm away from my work laptop right now. Sludge buildup in the oil pan can cause oil starvation which leads to oil light issues.
***** I'm in Ireland, Yeah I heard sludge can cause issues. I think i'll try replacing the pressure sensor first as they're pretty cheap. Thanks :)
my 1996 gti vw 2.o wont stay running for more then 45 sec or long then it dies help plz
+cheyenne smith Have you checked fuel pressure / supply? Could be a bad fuel pump or restricted fuel filter. Have you checked for stored fault codes? Have you checked the ignition system? It could be a number of things... fuel pump relay or ECM relay, crankshaft position sensor, coolant temperature sensor etc. not sure from my side of the keyboard. MAF sensor is also another possibility. Check things over one-by-one and you will find the problem. Have you got a service manual? www.bentleypublishers.com/volkswagen/repair-information/vw-jetta-golf-1993-1999-repair-manual.html
Howzit my Jetta CLI 2lt engine have that oil light i will check and revert to your video
What year is your Jetta?
@@EXOVCDS 1994
@@raymondzenzelencube5463 is just the light blinking or also the warning buzzer? Only once the engine is warm?
@@EXOVCDS the light with the warning buzzer when ithe revesis at 2000rpm
@@raymondzenzelencube5463 attach a wire to the switch at the filter flange like I did at 6:21 if the warning still comes on, then the problem is in the instrument cluster. If the warning stays off, then the switch is bad or you have low oil pressure.
Recently had oil pan, front seals and valve cover gasket replaced due to leaks. Now oil seems to be coming out of High Pressure oil switch! (Noticed because there was suddenly oil on the driveway.) Not over filled. Currently about a quart low. Thoughts?
Oil age... it's common for switches to leak when they get old. Replace it. If you are worried about excessive oil pressure... attach a pressure gauge so you can check pressure. My bet is on old age... year, make, model, engine... would also help.
BTW, I have already replaced the seal for the oil cooler on the under side of the sending unit a couple years ago. This time, there was clearly oil up inside the rubber boot of the electrical connection on the top of the high pressure switch. Is this just a symptom of that switch failing and a simple replacement needed or part of something more? Not getting any dash light flashing or buzzers.
It's old age... it's common for the switches to leak when they get old.
1997 Jetta, 2.0 Manual. Thanks. Just coincidence in occurring after sealed up? Or just a little too much additional pressure (From a truly sealed engine) for an old switch?
A "sealed" crankcase does not / can not influence oil pressure... the oil pump & pressure relief valve are what control oil pressure. Oil was already behind the oil pressure switch boot BEFORE you "sealed" the crankcase. Third time might be the charm: Old Age.
guys can i ask a question i have the same problem but i have golf 3 1.4 car what colors should i use for Oil Pressure Switches thanks
We don't have golf 3 1.4 in Canada... so I don't know how many switches your golf has. In general (for mk3 vw's of that year) one blue and one white pressure sensor. Have a look at your engine and determine how many pressure sensors there are... then, remove one sensor at a time and check the "pressure rating" that is stamped on the bottom of the sensor(s). Buy the same sensor and install in the same place that you removed it. The part number is also stamped on the bottom of the oil pressure switch. Color of the switch is not always the best to rely on... check the part number & rating.
@@EXOVCDS yes i have one blue its genuine volkswagen switch for the low presure but i have yellow for high it is 1.6-2 bar switch it is possible to have oil that presure for a 1.400 cc engine? and one other question when you have the key to on the light must flash or stay as it is ? because i have problem i think with the high pressure switch thanks for the help my friend
Like I said... the correct pressure is stamped on the bottom of the oil pressure sensor. Use that pressure rating to compare with the new switch (new switch might be different color but have the same rating). Key ON engine OFF oil light should blink. Engine ON / running, oil light should be out. 2000rpm oil light should be out. If oil light is flashing at 2000rpm (and the oil buzzer is buzzing), you have an oil pressure problem or a pressure sensor / wiring problem.
@@EXOVCDS ok thanks a lot my friend
Does this work with my 95 mk3 (A3) 1.8l? I have the oil beep sensor problem. I believe the 2.0L are very similar.
Yes, similar setup... might have both switches at the filter flange though.
I will take a look thanks! Great videos!
Thanks! Thank you for watching and taking the time to comment!
I need to know how that beeps mean cus I have an Mk3 95 and when I drive it comes that beep...what that means? I think that I have the oil pressure bump damage but I need some ideas to clear my mind....please contact me or do a video explaining that I will appreciate....God Bless You
There are 2 oil pressure warnings / conditions.
- low oil pressure light alone
- low oil pressure light & buzzer / beeper
The beeper & light are triggered at 2000 rpm when the "high pressure switch" (at the oil filter flange) is NOT
grounding out the wire due to low oil pressure.
Make sure that the correct oil pressure switch is installed (oil pressure rating is stamped on the base of the switch).
Disconnect the wire from the switch and attach it directly to a clean metal part of the engine (grounding the wire). If the
warning still comes on at 2000 rpm, then there is a fault with the wiring or the instrument cluster.
In general... if the beeping & flashing light only happen AFTER the engine has fully warmed-up... then the problem is due to
warn engine components that are causing low oil pressure. Switching to a THICKER oil can help keep the warning from coming
on... until the actual mechanical issue is addressed.
Thomas EXOVCDS but if it none of the things that you told me happen? What means that buzzer?
Could maybe a failure on the oil cooler?
Luis Medina Don't know... check it.
Hey I have the exact same engine and my oil light randomly started beeping one day and I have been constantly checking my oil no leaking my oil level is fine so I tried replacing the high oil pressure sensor after watching this I overnighted the part and put it in I don't know if I just got the wrong sensor or didn't put it in correctly cuz my oil light still beeps but my oil is fine still I have to drive my car to school and shit so I drive it any way but the buzzer is driving me crazy and I don't know what to do now I check my oil every day and it's fine and I drive my car ever day so I'm stumped I could really use some help
Disconnect the yellow wire from the switch and attach it to a metal part of the engine (with a jumper wire). Drive the car and let me know what happened.
Thomas EXOVCDS thank you for the quick reply I will try this tomorrow morning and let you know and just any jumper cable will do
spencer Oakes Anything small that you can attach to the disconnected wire and then to a metal piece of the engine. You can also wedge the disconnected wire connector against a metal part of the engine. It just needs to be secure / make contact with the engine (ground side of the electrical system / battery negative).
Thomas EXOVCDS if I can't find any jumper cables and I cant find any thing to attach the wire to the engine what would u suggest
You can use a piece of wire or bare metal paper clip to tie the metal end of the wire to a metal part of the engine.
Can you jelp i have a 95 cabrio 2.0 my hps was leaking oil no buzzer or light coming on bought one from autozon light and buzzer go on i bought one from different store and same thing light and buzzer go off. At 2100 or so rpms but if i install the leakey on it doesnt bizz or no light either can you help
What color is the old switch and what color are the new switches?
Old is white new is bronw from autozone and black from other place
+cesar palafox The switches are wrong... get one from the dealer if the parts stores don't know what to sell you.
+cesar palafox Did you get my second reply?
my golf mk3 1.8 gets the oil light with the alarm at 2000 rpm when the engine is warm , i found the oil pressure switch located at the oil filter , i noticed its blue and said 0.25 isnt that the low pressure switch also i have tried replacing it with no luck. I also noticed another thing that looked like a pressure switch but its behind the blue one could that be it? and i cant find the switch at the cylinder head do you know where it is located on the 1.8 engine im thinking maybe the previous owner put the low and high pressure in the wrong places. sometimes the beeping and the alarm turns off after a while when im under 2k aswell but shouldnt the engine have seized already when i have driven some 2-3h if it was a low oil pressure issue? great video by the way :)
The 1.8 does not have one at the head. Both switches are at the oil filter flange. The blue switch is for the blinking when the key is ON and for low pressure below 2000 rpm. The white pressure switch is for low high pressure above 2000 rpm.
okey, then ill try to replace it :) thanks for answering so fast :)
another weird thing is that it stops beeping and flashing after a while sometimes and you said you had to turn the engine off
The oil pressure switch for the "warning buzzer" should be a yellow wire... disconnect it from the oil pressure switch and attach it to a clean metal surface with a jumper wire. Drive the car... does the warning buzzer still come on?
i grounded the wirw and the buzzer didnt come on so it is either bad oil pressure or bad pressure switch, the car started running bad so i it isnt impossible ti be bad oil pressure
I understand that the high pressure sensor (VW Jetta III) should not have power in engine-off position. What should i check on my car in which this is not the case? I have power at the high pressure switch just as at the low, and when I start the car I get pressure light and buzzer after a while. i can relve it to above 2000 rpm in the first few minutes without any alarm going off, but after a while then relving the engine brings up the alarms. I have replaced the sensor, and the situation remains.
Should NOT have power when the KEY is in the OFF position... key ON engine OFF, should have power.
Disconnect the high pressure switch and attach the wire to a clean metal engine surface using a jumper wire. Drive the car... warning light & buzzer should NEVER come on. Let me know what happens, then we continue.
I have done this and driven for quite a while. Nothing notable happened. no warning light nor buzzer.
Unfortunately the test cannot be relied upon because after driving long enough to compare wither other times when the alarms came on in the past, I decided to connect the switch and take another drive. Nothing happened! I will have to repeat the test after the light and buzzer alarms return.
Just leave the wire grounded... drive for 1 week. If no warning buzzer comes up, then you know that it is NOT an electrical issue.
This seems risky though, because I would be driving the car without the sensor. I mean, if it is not an electrical issue, I will be ruining the engine in the test. Won't I?
I have a 97 VW Golf Trek 2.0 my oil light is always on with one weird exception. I replaced both switches, when I drive the car for 5/10 minutes and the car/fluids warm up, when I push in the clutch or put it in neutral the oil light shuts off. When I put it back in gear and release the clutch, the oil light comes back on. What does my clutch/gears have to do with my oil light and this only works when the engine is warm. hope you can help, Thanks
+vidjunkie8 Remove the wire from the switch at the head... what happens?
+Thomas EXOVCDS
With the upper sensor unplugged the oil light is off.
+vidjunkie8 The oil light only comes on at idle or also when at higher rpm?
+Thomas EXOVCDS
With the upper switch removed I went to 3000 rpm and the oil light did not come on. If I plug in the upper switch then I'm back to the light only shutting of when the engine is warm and the clutch is in or in neutral.
+vidjunkie8 If the oil light is always on when the switch is plugged in, then the switch is the wrong style / type. You did not mention a buzzer sound... so the oil pressure switch at the oil filter flange is probably correct.
Thomas exovcds I have a 2002 Volkswagen cabrio 2.0 4cylinder automatic and my oil light is flashing, I check to see if there's oil and there is what should I do?
+Sasuke Uchiha Did you check the switches like in this video? Did you check oil pressure?
The oil pressure
+Sasuke Uchiha So what is the oil pressure?
+Thomas EXOVCDS it is at 5
+Sasuke Uchiha What happens when you bypass the oil pressure switches? You have to tell me everything you have already done / checked... I can't keep guessing. Have you replaced the switches? Are they the correct switches? is the engine noisy? Did you check the wiring? If everything is OK, then the problem could be in the instrument cluster.
its giting fuel but acts like its not
+cheyenne smith If it runs as long as the jumper cables are attached... then you have a battery / charging system issue. Fully charge the battery with a charger and then load test it a couple of times. If it fails the load test, replace the battery. Make sure that your alternator is ok 13.5 to 14.5 charging voltage. If less than 13v, check for voltage drop (bad / corroded connection) of the alternator charging cable, the battery positive and negative cables. No more than 0.2V voltage drop per cable is ok.
service manual
my oil light is flashin
+cheyenne smith Oil light is flashing when? When the key is ON, when it stalls? Normal.