How To Test EGR Valves | Old vs New
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- čas přidán 11. 09. 2017
- How to test EGR Valves; old vacuum types and computer controlled.
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The EGR valve lowers peak combustion temperatures and reduces oxides of nitrogen emissions (NOx) by recirculating exhaust gas through the intake manifold and into the combustion chamber.
Note:
This video is being performed by an experienced tech. Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, use safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. If you don't think you can perform the job then be smart and don't. Carsntoys is a member of the Amazon Influencer Program.
Publication, reproduction or distribution of this film is strictly prohibited.
Testing old vs new EGR Valves:
• How To Test EGR Valves...
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Straight to the point and easy to follow. I've been doing computer & car repair for a while and love diagnosing, the only problem I have is my stuff works wonderfully until it doesn't. I usually spend a couple of weeks trying to remember how to do the repair (cause if you don't repair stuff regularly, you truly forget), let alone figure out where I put the necessary tools. But CZcams is a benefit when you have people who understand the benefits of camera positioning and can stick to the point of their video (none of the rambling). In car repair you have mechanics, parts changers, and mechanic instructors, the last are the biggest benefit because they can do the repair and explain the ins and outs of the system they're repairing to help other mechanics or the DIYers. Gotta love them and you are definitely appreciated.
Thanks, it helps explain a lot! ! Great job!
Great test my friend.
many thanks ive looked for ever to find how to test these electronic valves
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Thank you for all..
Excellent video!
Very good thanks for your explanation
hey mate thankyou for showing us how to test these , good video, spot on information, you sir are a genius
Glad to help. Cheers
I had to subscribe man you a phenomenal teacher. Someone can learn a lot from you. Keep up the good work brother!!!
Thanks for the sub!
Awesome explanation going out to test mine.
thanks you sir..very very helpful..
GREAT VIDEO, IT'S THE BEST I HAVE SEEN SOOOOO FARRRRRRR, I GOT TO TEST MY EGR, now I know HOW, engine light is on , on my ford focus. yours is the one needed to see.
Glad it helped!
Awesome video. thank you
thank you so much for your help :)
Glad to help.
I just want to say that this video saved my but. Thankyou sooooooooooooooo much.
Nice
Good job
Mityvac fucking rocks! A must have!
Oh yeah, totally. It's worth every penny.
I was able to test my EGR electronically as shown and it came out okay. I don't have a device to check the vacuum, though. Maybe the auto parts store has one to buy or borrow? Pretty sure mine has a stuck "pin"/valve . Check Engine light indicates EGR problem. Wanted to be sure before I cleaned and rehabilitated or replaced entire unit.
I have a Toyota 3rd gen Prius. I used an extra reach 12 mm racheting wrench for the three Nuts in the back and had a hard time reaching the 4th HIDDEN 12 mm nut underneath the EGR cooler. Used a Torx E8 socket for the two Bolts ( in the back of EGR cooler) and we finally freed the EGR assembly. Good video
I just sucked on the tip a bit like a ladyboy and plug with my lip same effect except it’s getting harder to live with myself 😂😂
Is it always supposed to hold vacuum across the board on all vehicles and models? I just bought a new egr for a ford econoline and it doesnt hold vacuum fresh out of the box. When I have it installed and idling the car and I apply vacuum with the pump it does want to stall out but it doesnt hold vacuum.
Very informative. Thanks. Anybody know the resistance readings for a 2015 Toyota RAV4 XLE ERG?
Is the ohms testing the same for the terminals on a 2008 Suzuki Grand Vitara 2.7 gas engine? The terminals look exactly the same and the valve itself is very similar looking. I'm getting no resistance at all (complete continuity) between the same terminals shown in this video.
good day CarsNToys , on the Honda part, I have a 2000 Honda Accord ex 4cyc 2.3L I CHECK 1and 2 pin getting 1.395 and 1 and 3 getting 1. or it jumps around different numbers, is it good or bad EGR can you HELP PLEASE....
I did the vacuum test on my Mitsubishi Eclipse GS and it holds the vacuum but when I apply vacuum the throttle body opens up. So when I do the test with the engine running at idle it actually revs up instead of stalling or wanting to stop. Is that a sign of a bad EGR valve?
People hes just checking the solenoid to see if it's good if it's good then u need to look further, into it for deposits or leaks , it's just a starting point so u dont chase your tail
My valve falls back to 1-2mm gap. So its not holding correctly but is it enough?
Thanks for the Honda info. Of 100000 ohms 👍
Hello is the ohm setting on 20K?? Asking for a buddy of mine
for a honda EGR, if terminals 1 and 3 don't show any resistance (no reading on multimeter), is the EGR bad?? any help would be appreciated
I know this is late but did you end up need a new egr? Send wit didn’t have any connection?
Hi! Thank you for this video. I have a Ford Mondeo from 2005. A 2,0 gasoline engine with 107kW. I got the DTC P0403. I have a electric typ of EGR-valve. I did check the EGR-valve with a multimeter just like in the video. I have approx 14ohm on all the terminals. You mention in the video that you should have 22-24 ohms but I have approx 14 ohm on all my terminals. Is this OK or is my EGR-valve broken? Thank you!
For my Kia it’s suppose to be approx 8 ohms. Each car is different
I have a problem my egr is disconnected due to no connector, so how can you tell which wire goes where. Its the one you showed with 6 pins
Good
Im getting P0402 Exhaust Gas Excessive Flow. Took out my EGR valve and cleaned it out, put it back in, same code. I also remover the modulator and cleaned it along with the EGR. Decided to get a new EGR and installed it. Same code. Found out my Cats guts were in my muffler and was essentially gone so I just replaced that today. If the code comes back does anyone have any idea what I can do. Its a 1997 Toyota Tacoma 2wd 2.4
hi for a mitsubitshi canter truck the range of ohms how many should be
What does that thing do is that part related to vacuum
Great video, clear and well explained. Tell me though, how can you tell if the diaphragm has gone if it's an electronic valve??
The old-style EGR valves used vacuum to operate the valve via a diaphragm (the vacuum was used to provide movement of the diaphragm which then moved the valve - like a power brake booster). An electronic EGR valve uses a solenoid to open or close the valve.
Mm
Ford tractors
Mmm
I brought my Subaru Forester 2010 to a garage because it's idle was really rough and the guy tested the egr valve (connecting and disconnecting it) while the key was on RUN. When he tried to restart the engine, the ECM was not working anymore. Is it possible that the test would have burned the ECM by having the EGR valve sending a sudden spike to the ECM?
So basicali if i disconect the vaccum line its like i dont have an egr (egr off)?
May I ask a question? Does an 09 Honda have the same values as the 03 Honda you tested? I did a tune up on an 09 Honda Fit, including replacing the ignition coils since I was in there and it ran beautifully for about three weeks then performance dropped dramatically out of nowhere. The diagnostic came up a bad EGR valve. Some people claim a dirty valve can do this but unless the build up is enough to keep the valve in one position, I don't see how cleaning it really would solve anything. I think the way mine failed, the solenoid had to go bad. It's not being driven open because the engine runs great initially but as I drive and the engine heats up, that's when I can notice loss of performance. Are the pin values the same???
Hello Kensho, did you get any answer for that?
You can also take it off pull vacuum down and put your hand on vacuum line if it holds it’s good if I goes back up it’s bad
How do you test a 3 wire egr valve? 97 Acura RL
so it started to open at about 5" vacuum?
Be aware there are various designs of EGR valves and not all of them are designed hold pressure
My 93 f150 has both vacuum and electrical connector... I didnt see you describe anything about when it has both
Hey all, If I connect a gauge and hose to the EGR should the needle be reading anything specifically? I replaced my EGR and tested it and it stayed at 0 even at op. temp. It's a 1979 F250 and the EGR is attached to the spacer plate at the carb. Let me know! Thanks
It's not supposed to read anything -you are just supposed to pull vacuum on it to see, if it affects the engine or holds a vacuum.
How do u know if it's the connector piece that is attached to the car
Jago08 Visual inspection.
I got resistance on my cables ,what to check?
How to test on lexus IS 220d 2009?
What if the vacuum holds (egr membrane is good) but the car does not stall/does not stop?
If it does not stall when u apply vacuum to the egr with the engine running than egr is bad. If it does hesitate & wanting to stall than egr is good
I have a combination vacuum and electronics tested the vacuum not holding
Can the EGR valve make the car randomly shut off while driving or idle? If not do you know what it can be?
Yes bad egr will make your car run rough and stall
Sounds more like the Cam Position Sensor.
How much vacuum do you need to apply? Anyone know?
Thank you
Vacuum is vacuum, just enough to test it but no to much to break the diaphragm
what about harness ?
4:45 I have a malt eye meter
My manual says ohms should be 20-24 ohms, at 20 C degrees temperature. This one is above 24 and we don't know the temperature
If i unplug the egr electrical connection while running, and the engine idle doesn't change while in park. Does that mean its bad? Please answer man, my car is hurting.
What's the problem? Do you currently have an egr code?
@@CarsNToys I had codes P0460 fuel level sensor A circuit(Gas guauge been out for two years) P0442 Evaporative emission sytem leak detected. P0506 Idle air control system rpm lower than expected. I have a rough idle.I had a strong gas odor under the hood but a New throttle body, MAF sensor, canister vent valve solenoid, canister purge valve, and pcv valve got rid of the strong gas smell. Still seems like the fuel mixture isn't right though, loss of power and still getting misfires. Each item i replaced for the intake/Evap system made it run better. Fuel additive helps, but i cant buy that for every refill. The main problem is when my automatic trans shifts in 1,2,3 gears it revs up to around 3k rpm's and makes the rear end or drive shaft jolt. It gets worse the hotter the engine gets. All gears shift awkward with high rpm's, 4,5,6th gears dont shift violently though. I replaced the camshaft sensor today and it made it shift about 40% better, and seems to get more power now. I'm about to install a crankshaft position sensor in the dark in about 20 min. Im hoping that helps since a failing crankshaft sensor can lead to misfires i read. I have a new coil pack, plugs, and wires that are top notch quality. I have new brakes but it seems like the pads squeek when driving with out breaking, and loss in power in brakes. Possibly the vehicle transmission sensor that controls the abs sensor, that relays my speeds back to the computer/trans? Possibly the power break booster has a vacuum leak creating this mess? I have the vehicle/trans sensor just cant get the stripped bolt out of the tranfer case because its in a tight spot! (I'm a millwright, so the stripped bolt realy fucking bothers me)😟 Possibly a bad EGR valve? I used a spray bottle with water, but it wasn't effective in finding a vacuum leak in any hoses. Their is too much air coming from the engine to get a good spray on the vacuum lines. I havent taken the egr valve off yet to compress it yet or to see blockage. Don't wanna buy a $25 egr gasket if the one i have is no good, but it seems like its a metal gasket from what i looked up. Maybe a bad vapor canister? I did notice the hose that goes on the fueling neck had a slight drip, but i just thought the fuel was over pressurizing from the bad cannister vent valve solonoid. I replaced all kinds of fuel parts over the last 2 years, something is messing them up. Maybe a bad fuel pressure sensor? 2004 explorer 4.0 sohc flex fuel with 137k miles. I change oil every 1500-2000 miles, new air filters on time, new fuel filters on time. Possibbly spark plugs and wires fouling up now from misfiring now too. Havent checked that yet. Please help out man! You get me in the right direction i will send you a Chri$tma$ gift!
Why does the vehicle runs rough when he applied the vacuum? Doesn't the engine do that when its running?
Anyone know?
Thank you
The egr is exhaust gas recirculation so when it’s engaged, it’s feeding exhaust gas back to the engine. When done manually on a cold motor like in the vid, it causes the engine to run rough. Normally It’s suppose to engage when the car is running warmer to help cool the burning of fuel and lower emissions.
Can you check the egr off the car this way
Typically, yes.
Ok, but what is an EGR (exhaust gas recirculation) valve, and what is its purpose??.
To return exhaust gas back into the engine to help cool the burning of fuel to lower toxic emissions. If burning too hot, it comes out as toxic nitrogen oxide
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Got a new solenoid and it doesn't hold a vacuum. Solenoid works though.
So 198 ohms that moves around then goes to OL is bad. 👍🏻
Doesn't mention mechanical check that valve is operating
Can a bad one cause car to smoke?
. It's really unlikely that your EGR valve has anything to do with your engine smoking. The smoke is more likely to be caused by bad valve seals worn piston rings, a leaking injector, a leaking fuel pressure regulator, or a blown head gasket.
Thank you sir
@@johnlira3316 What color is the smoke ? White, black, purple ?
White had my mechanic un hook the vac hose that goes on top of the fuel presure valve he said it smelled like gas so now that usaid that might be the problem i think you are correct ? What do you think? Car is an 04 grand am and it still has the factory Egr and fuel presure valve
@@johnlira3316 I know this answer is long so, grab some popcorn. LOL. And, good luck. It could be a cracked or warped cylinder head.
Head gasket failure, cracked engine block or rings. However, if it's thin wispy smoke it could be condensation. However if it's thick white smoke it could be something more serious. 1) Inspect The Intake Gasket. (This is a car part that seals the cylinder head in order to prevent the coolant from getting to the cylinder. Any leak or damage in this part creates an opportunity for the coolant to enter the chamber. Long story short, it will create white smoke from exhaust pipe) 2) Examine Further To Check The Head Gasket (Remember to only perform this step when the intake gasket is working fine. After that, we will come to the head gasket. This is a car part that seals the cylinder head in order to prevent the coolant from getting to the cylinder. Any leak or damage in this part creates an opportunity for the coolant to enter the chamber. Long story short, it will create white smoke from exhaust pipe. If this part is still fine, we will check the cylinder. 3)Look For Any Crack In The Cylinder Head (The cylinder head is the car part that made of aluminum, which is prone to breaking in overheated conditions. This part is essential since it connects to the engine block and head gasket. Sad news for car owners: If this part is broken or damaged in any way, you have to change it.) What Causes White Smoke From Exhaust Smells Like Gas ? Usually, it is water vapor or steam, since it is introduced into the chamber. For that reason, you will have the water dripping from the tailpipe. Drivers can also see the water in the fuel or a leak in the head gasket. You might think it is normal, but that is the engine misfiring and pushing raw fuel out. In those cases, the car will be running rough and drivers can smell a raw fuel smell. In order to fix this, just check the fuel and replace if necessary. What Causes White Smoke From Exhaust When Idle? If you have white smoke from exhaust when stopping or idling, your combustion chambers engine might get oil inside, which cause them to burn off the exhaust. This will cause white smoke, along with the idle issue. This is very easy to recognize since there is a difference between burning gasoline explosion and a burning oil explosion. This problem should be fixed soon since the longer the oil stays inside, the more damage it causes for the spark plugs, which might require replacement.
Shouldn't it stall when vacuum applied??
Or is just running poorly good enough?
What if only has 3 connections
What If it dont read at all
Totally useless test for electronic EGR. Just measuring continuity of stepper motor windings. Don't know if valve is stuck open, closed, or is leaking.
UnFunded Opportunities I agree that is not verifying power ground computer control or hose vacuum issues
isnt 100,000 ohmz = 1k ohmz so if you had 1.4 k ohmz then thqts over the threshold
No it would be 100,000 = 100k
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Lol what's the point in this when the resistance of the EGR valve is different for every vehicle. How are you supposed to know what it should be
somaali
Ohms tests suck though
OK you put it and car motor on do Thad i see you video put air staring like motor do fifrend sound Thad say are no good o it good thank you video got machines buy and amazon for 17 dollar to do my clutch to take out air my clucth can used the gvr to thank you s much
Car makers do NOT like DIYers.They only sell parts cos they have to.If it was up to them it would be ILLEGAL to fix yerself
But you don't need to run out and buy a gadget to test it..