VW T4: 2.5L AAF ACU Fuel Pump Removal
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- čas přidán 6. 09. 2014
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Seems like you've got an video for about every single malfunction that I am trying to troubleshoot on my T4! Big thanks mate!
Thank you for watching!
Here's another one / version.
czcams.com/video/wNHW80PwgRg/video.html
Hi Thomas,
thank you so much for your video, I was stuck in how to get the old pump out, but once I saw how hard you had to turn, I grabbed in with two hands and gave it a hard push to the left and it worked. Since it was evening I did all the connections with a new pump on my work bench, and tomorrow I am going to install all. I just hop I get the pump in the locking plate and turned, we'll see. Once again, thank you very much.
Tom from Munich, Germany
In the middle of doing this right now. Just came back to see which way to turn the pump. Great videos, as always Thomas. Thanks...
+Andy Wardle Thanks for watching & taking the time to comment!
Fantastic, as always. We recently finished replacing the timing chains on my 1999 T4 and ended up with a crank, no-start situation that was traced back to no fuel pressure. I’ll be replacing the fuel pump next and watched this a few more times. Thank you!
Some people leave the seats in place and cut the carpet to gain access... I prefer to remove the seats. Let me know how the replacement goes / went.
@@EXOVCDS Thanks for your reply! We changed the fuel pump and relay, but still have a no-start. No fuel is getting into the engine, apparently, and starter fluid almost works.
@@brunocerous Make sure that the timing belt is ok (cam & crankshaft timing)... it the timing jumped, the engine will not run even if there is fuel & spark.
great video! I got the same van in my shop now.Has been sitting for 5 years with a full tank of gas. The smell is terrible! I never had a pump you have to turn out this video saved my butt!!
+Richard Ford Let me know how it goes.
I just got the new pump and sending unit. This vehicle came in with a 06 T bird both had been sitting for 5 years. the Tbird needed the tank dropped to remove all the bad fuel and the pumps. Its a saddle bag tank and both pumps had rotted away. I also had to replace the fuel filter and injectors. I suspect the injectors will need to be replaced on the Eurovan as well.
the vw lived. did not need anything else but filter and pump. Cleaned out the fuel rail with sea foam and compressed air and the engine started. I suspect the fuel tank had less water in it than the tbird. I did some research and found the tbirds tank have problems with trapping water.
+SLAGNOGL3R Thanks for the update!
Thank you very much keep up the good videos and God bless
Thank you for watching!
Tom Wingarde Guten Abend! Make sure that the fuel hoses are correctly clamped using clamps that have sleeves (same style as factory clamps). If the clamps are not tight enough or if the plastic tube is not clamped evenly... fuel pressure can leak out, resulting in hot start issues (long cranking time).
This was extremely helpful.Thank you! I can’t for the life of me get the pump to come loose when I turn it with one or two hands. Doesn’t budget at all. Any tips?
It should just pop loose when turning counterclockwise... less than 1/4 of a turn. Once loose, pull up.
Another Eurovan video! I like!
How did you diagnose it was pump, and not relay?
Great video. Thanks.
Garth Goldberg I can't compete with the diagnostic channels, so for the most part, I don't include it (diagnosis) in my videos... unless it is an easy diagnosis (not a lot of time involved). Remember, It would be additional video / memory used in my video glasses and additional editing time on the weekend. So I just stick to recording the actual work that needs to be done.
The pump did not hold pressure. Customer complaint was long cranking time. Pressure dropped from 40psi to 0 in a few seconds... not good. New pump held pressure & no more long crank to start (cold or warm).
Thanks as always for watching and thank you for saying it is a great video.
*****
That's what I wanted to know. (Diagnosis). Thanks.
Hi good job …. Thanks.. does that problem show up on the vans ecu when plugged into meter ? Thanks
No. Here is a better video that shows how a pump can be easily checked:
czcams.com/video/wNHW80PwgRg/video.html
Video shows a bad fuel pump electrical pattern and at the end of the video a good fuel pump pattern.
Hi when you make the other videos can you explain what the car does before you change parts please. Thanks.
Engine did not run. Fuel pump was bad. Changed fuel pump.
That is a crazy amount of work to access the pump. Should not the pump be over the fuel tank in the rear?
T4 fuel tank is behind / under the seats. Fuel pump in the tank is the best location for a fuel pump (in any vehicle).
Great videos i only miss more light do you have extra lamps at your workshop it will improve your videos thanks for great videos
Once the seats are out...
czcams.com/video/wNHW80PwgRg/video.html
Now if he only stopped moving the camera so much. Its like he has it attached to his head. Is it filmed on a gopro? ?
Hi Thomas. Great video!! Can you reuse those clips for the fuel lines?? If not do you have to use the OEM clips or can i use something else like a hose clamp??
You can use regular hose clamps... just don't tighten the clamps too much, as they will cut into the hose.
Which tool is the one that you asked for help on in that video? Some kind of release tool? The video doesn't show clearly and the links are not conclusive. Thank you.
Sorry about that!
www.amazon.com/Fuel-Pump-Lock-Ring-Removal/dp/B01JY5VZZU
I have one more question...6 months ago a got a check engine and the reading was PO411 and PO0455. I didn’t drive the van for a week and half....now it won’t fire up (battery, starter are fine). Here’s what I’ve change so far evap purge valve, relay. Do you think it’s the gas pump? Thank in advance Sir!
Does it crank ("starter is fine" doesn't tell me if it cranks)? If you don't hear the fuel pump prime when you turn the key to ON, tap the bottom of the fuel tank while someone cranks the engine... provided it cranks.
My t4s hard to start when cold in the morning once started its fine thinking them brown lines how easy is it to replace those?
Brown lines? At what point in the video?
Hi can you please tell me how long you think this whole replacement took? Thanks in advance. Simon from Downunder
Simon Templer I just checked mitchell labor guide... 1.9hs is suggested. You can gain access to the pump without moving the seat or carpet, but the carpet will have to be "cut" to gain access to the pump cover. If I remember correctly from my visit to Australia last year, more beer breaks are taken Downunder than here in Canada... so it's a bit hard to say how long it should / will take! :-)
Hey Thomas, thanks for the video! Your content is always spot on! Quick question: what year was this Transporter? Also, did you replace the pump with a factory or aftermarket unit?
Will this work?
www.vanagain.com/product/electric-fuel-pump-for-eurovans-92-2003
@@EXOVCDS
Reuse everything else? The van is now 31 years old, I'm wondering if all the components are now beyond their life expectancy...
@x-man4702 check the site for a fuel sender and rubber cover seal. I've only had to replace one plastic tank cover (that has the in & out fuel fitting) due to cracking. Worst case, the rubber seal & sender can be reused. If the seal is looking dry / has small cracks... use some silicone grease to help revitalize it. Parts are getting scares, get what you can, reuse what you have to. =-(
Great video!
I have a 2003 Eurovan and I just change the the fuel pump. I do hear the pump when turning the key and replay is clicking, but still won’t start. Would this be a electrical problem? Please help
Thank you
Key on engine off... is the check engine light ON? It should be. Have you checked for any fault codes? If the light is not on, then the ECM (engine computer is not awake). If it is on (and you don't have any ways to check for fault codes), it could be one of a number of issues... crankshaft position sensor, fuse or wiring issue for the ignition coils / injectors. When did this problem start? Died while driving or wouldn't start one day?
It’s was two months ago when my wife was driving and the car starting to loose power. Then we got it towed to a local shop and diagnosed as fuel pump, so I towed the van back home and change the fuel pump (Bosch) by a friend mechanic. This was the third time changing the fuel pump. If it is a ignition/injector wire problem. Would this cost the fuel pump to burn out? Thank you
Third time... so the prior 2 times the engine ran again with the new pump?
No, ignition or injector faults should not cause the fuel pump to burn out. They are all on their own circuits... aside from the fuel pump relay that feeds power to the injectors & fuel pump.
Can I fit a fuel pump from 2.5l 1992 to a 2.8 vr6 2000 .vw eurovan
I am not 100% sure... if they mount the same way (I think they do), then yes... should be possible.
Don't see the link for that special tool
www.ebay.com/itm/Car-Pump-Tools-Adjustable-Fuel-Tank-Wrench-Lid-Removal-Kit-for-Benz-BMW-Audi-VW-/321965404199?hash=item4af6a23027:g:0VwAAOSwKtlWiNLR&item=321965404199&vxp=mtr
@thomas EXOVCDS video is awesome shows everything. I was just wondering if this would work on a t4 1999 transporter 2.5L manual?
cheers Jackson
Yes, should be similar... being a T4.
Here's another video (but does not show seat removal):
czcams.com/video/wNHW80PwgRg/video.html
Hi Thomas, I have a 93 Eurovan MV 5spd 2.5 gas engine. No start. No fuel pump noise when key is on. Power to fuse (18) for 1 second when key is on and constant power when cranking. Power to relay, clicks when key on. Jumped 87 and 30 with a jumper wire and still nothing from pump. Beating on bottom of tank dose nothing. Is there anything else I can check before I rip the seats and carpet out? Is there a place I can test the wiring to the pump elsewhere?
The red/yellow wire that goes to the fuel pump can be found behind the fuse box (lower left hand corner where it goes under the carpet). I wouldn't pierce the wire to check for voltage... if you have an inductive amp clamp, you can check if current is present when the key is cycled. Most likely the pump is stuck, or the contacts within the pump are completely shot. Your best bet is to remove the carpet to gain access to the connector (to check for voltage at the pump)... once you confirm that voltage is present, you're only a couple of steps away from removing the pump.
Thomas EXOVCDS ok, thanks Thomas. So then am I correct 83 & 30 jumped, the pump has to run ?
I mean 87 & 30
Yes, 87 & 30 should provide power to the fuse / the pump.
Thomas EXOVCDS Thanks, you were right. Pump is out. It’s an original Bosch. Really wasn’t that bad getting it out. What brand pump do you recommend? I’ve seen Chinese complete assemblies on eBay for $35(I’m selling it as soon as I get it up and running) I want it to work but I don’t care if it lasts 25+ years or not.
Hi Thomas. I was wondering if you had any thoughts on my 1993 Eurovan staling issue? Whne im slowing down and applying the brake the rpms drop below 500 and sometimes it causes a stall. This does not happen every time. It seems like its a fuel supply issue but i have changed the filter and pump?? Any ideas or tips for troubleshooting would be great thanks.
Engine off... ignition key in the ON position. Does the idle stabilizer (silver cylinder on top of the intake manifold) buzz?
@@EXOVCDS yes it does.
@@matt7279 Could be one of a number of things... sticking / dirty idle stabilizer plunger, incorrect base ignition timing, incorrect base idle speed (if it has a speed screw, check if there is carbon on the tip of the screw), a bad EVAP purge valve can allow excess gasoline vapor to enter the intake if the vale is stuck open, fuel pressure regulator that is dumping too much fuel under high vacuum, out of spec ECM MAP sensor signal... and possibly other things.
I have a 93 2.5 manual Eurovan that has been sitting for awhile. It always has started no problem. Recently it tried to start it and it cranks and no start. No spark at coil wire and no fuel. ( no fuel pump cycling sound and no pressure at cold start injector. Is it possibly for both systems to go out at the same time or is there a common link that will take both out? Thanks
When the key is ON, does the oil light & battery light come on?
Thomas EXOVCDS oil light flashes, battery light stays on when key is on.
Thomas EXOVCDS I thought maybe the key switch?? I jumped the hall sensor and the coil sparks.
Spark will only happen if the Hall Sensor in the distributor is sending a signal to the ECM... which then sends a signal to trigger the ignition coil. If the Hall sensor is bad... no spark. If the timing belt is broken, the distributor will not turn and you will not have spark. Check fuse 18 (if I remember correctly) for power while you are cranking. Fuse 18 should be for the fuel pump. If the fuse has power, then the pump could be "stuck". While someone is cranking the engine (with the ignition key), hit the bottom of the fuel tank with your open palm hand. Disconnect the ignition coil and check for power (using a test light) at one of the 2 outer pins when the key is ON. Attach an LED test light to battery + and then hold it against the center pin of the coil connector... have someone crank the engine. The LED light should flicker. Like in this video (start watching at 4:19):
czcams.com/video/HHFUiN4P4A8/video.html
Let me know the results.
Sorry... I didn't read / get your other reply in time.
Hi! I have a 2003 Eurovan MV. Do they have same location like the t4?
Same location.
Hello people, I would like to ask about VW T5. It is same location? Thanks for answer.
Let there be light
Thanks to GREAT comments like this.... my video recording method has improved. Watch this video if you have problems following the one you're complaining about.
czcams.com/video/wNHW80PwgRg/video.htmlsi=bVupHaoYcWpxOcHK
I'm sorry to disturb you, but I'm reduced to desperation.
I have a VW T4 5 cylinder 2.5 liter engine with automatic transmission.
my electrician added an ISB port to the electrical system, but from that moment the motor starts but no power reaches the spark plugs.
we also replaced the coil thinking that the problem was there.
but nothing, the current reaches the coil but not the spark plugs.
does she have an idea?
Thanks for any information they can give you.
I don't know what an ISB port is
What does your electrician think the problem is? He knows better what he did than I do. If it happened after he worked on the van, then it has to do with what he did.
Post a video on your channel, so that I can hear the engine when you are trying to start the engine.
Show me how you are checking for spark.
@@EXOVCDS sorry, I spelled it wrong, USB port to charge your cell phone. and he claims that after doing the work he also moved the van. except that when the vehicle was collected, the motor turned but no explosion was heard. we excluded the pump because it has an LPG system and it doesn't start with that either. he checked the fuses and relays, the current reaches the coil but not the spark plugs, he disconnected a spark plug cable and inserted a spark plug, it actually doesn't turn on. I'm a little embarrassed to ask him if I can make a video, I think I'll take the VW T4 to another mechanic. I also think that things don't break by themselves, but he's good and I don't know what to think. but she is very kind as always :-), I love my t4 I hope they repair it for me. :-)
Are you sure that the timing belt is ok? If the timing belt does not turn the camshaft, spark will not go to the spark plugs.
@@EXOVCDS I will ask him to check, thanks :-). but taking what the electrician told me as true, can the timing belt fail so suddenly? he turned off the engine that was running and then it never started again. he's too weird. and I have no reason not to believe him. I don't think he's hiding anything from me.
@FGiordy I have no idea what is wrong... just like you and your electrician. A timing belt is a simple thing to check... and yes, they can fail suddenly when they are old. Simply stalling the vehicle by letting the clutch out wrong, can cause a weak belt to break. Listening to the sound of the engine trying to start... can tell you if the belt is ok or not.
What made you want to work on vw/audi vehicles?
I looked for and applied for work all over the city. I got hired by the German bosses (at the time) because I too am German... and had a bunch of unused tools. :-)
I'm German /Norwegian myself. These cars beat the hell out of me, nobody in my shop knows a damned thing about em. I have somewhat of a clue so I get stuck with them. I'm bout ready to just walk away, any advice?
MrErikw26 Wear some video glasses, record & post videos on CZcams... and hope that the extra income will allow you to retire a few years early!!! 😅
I am nowhere near knowing a lot about these cars... use Erwin (link in the description) to get service info, and read through iatn.net forums for info on things you are stuck on.
I'm happy to help as long it's about something I have experience with... so feel free to send me a PM any time.
Thanks, now that you mention it. 2010 passat bpy 2.0 fsi. Can I get a fuel pressure regulator/sensor separate from the hpfp? The top 2 wire sensor got busted this am......
MrErikw26 Not sure... can I get back to you on that? Customer car? Worldpac forum would be my first place to ask about this... have you got a worldpac account?
Was going to attempt this myself until i saw you have to remove the ebrake
www.ebay.com/itm/Car-Pump-Tools-Adjustable-Fuel-Tank-Wrench-Lid-Removal-Kit-for-Benz-BMW-Audi-VW-/321965404199?hash=item4af6a23027:g:0VwAAOSwKtlWiNLR&item=321965404199&vxp=mtr
You can unbolt the brake and move it over. No need to disconnect it from the cable.
Evc VW email can be found here: fkh161.ca/
smell awful
Justin Vancouver Gasoline smells pretty bad... had to make sure that I was getting enough clean air.
yes hard to carpet removed cuz T4 is small van