VW T5 Limp Mode Troubleshooting EGR Clean Part 1

Рет қаралды 35,117

AlfJob Harris

Күн бұрын

Troubleshooting limp mode issues with EGR and throttle body cleaning

Пікірлер: 21

@Stoney3K Жыл бұрын

The flappy bit is the throttle body. With an EGR system a diesel needs a throttle body to limit the amout of air coming in through the intake to offset the exhaust gases coming from the EGR system. The more the EGR opens the more the throttle will close, it's also used as a safety shutoff.

@silveryfox69 6 ай бұрын

Should the flappy bit be open or closed? Mine is closed when engine is not running. Currently experiencing reduced engine performance and black smoke from exhaust (failed MOT) changed all intercooler pipes and issue still there. Have got a new turbo on the way to swap out, however I'm thinking could it be EGR valve?

@Stoney3K 6 ай бұрын

@@silveryfox69 Black smoke is a symptom only if the EGR valve is stuck open. The first thing you should try is to take out the EGR and clean it -- it's a common problem to have carbon built up on the valve and it being unable to move. On a shut off engine the throttle body being closed is normal.

@eliey4677 11 ай бұрын

Helped me a lot mate cheers

@lolorick5885 Жыл бұрын

Do a EGR delete and it won't get clogged up again after cleaning. Most of the VAG engines seem to suffer from this EGR issue with clogging up.

@Kevin_Aus 2 жыл бұрын

Good luck mate. In my 07 T5 AXE the boost issues were due to sticky vanes in the turbo. A bit of oven cleaner up the turbo outlet and some 'turbo cleaner' fuel additives bought me ~6 months, before the issue came back. It's a common issue unfortunately.

@alfjobharris3078 2 жыл бұрын

Hi Kevin thank you for your comment. In this instance the issue was resolve with the new boost sensor. I’m going to remove the intake fully for further investigation and cleaning

@grancanariacycling7242 Жыл бұрын

Thanks! Really informative

@jonathansimmonds5784 Жыл бұрын

You've just described the exact same problem I'm having with my T4 only I can't find the problem and I don't want to just keep throwing money at it replacing the latest thing someone says to do in these videos and there are plenty of them but none saying they've solved it! Lets see if yours does.....

@24840069 2 жыл бұрын

Thanks for this just done mine, your video was very helpful.

@kieronmarshall2658 2 жыл бұрын

THANKS, great video. I also had badly seated pipes but sadly not the cause so a new sensor is ordered. If that doesn't fix it I'll bite the bullet and look at the erg thingy. Re: the brown wire I don't have one on my 1.9 T5 did you track it down?

@alfjobharris3078 2 жыл бұрын

Glad it has helped and hopefully the sensor will sort out your issue, in the end I also had a faulty maf sensor and now the van runs so nice and pulls good again. Brown wire is only on some models and traces back to the J519 central electric under dash

@user-pn6se4zf5t 4 ай бұрын

The oil in the intake is from the pcv that comes from the tappet cover and goes to the air intake near the air filter. These engines drown in oil unless an oil catch can is fitted. Your egr looked like it was inoperative. Should be a shiny bit on the shaft in there. Also that is not a throttle body but a shutoff valve. Fueling is all done by the injection

@alfjobharris3078 2 ай бұрын

Thank you for the information, a catch pan was fitted to this van before sale

@jonathansimmonds5784 Жыл бұрын

Yeah, I wrecked my MAFF sensor catch trying to get it off, REALLY pissed me off at how stupid a design it is with NO explanation until I find yours. Zip tie holding the thing on now. I'm going to hazard a guess you're young, watching you trying to get that apart has an old timer like me screaming at the screen how to do it! Always use a drift between the hammer and the job, a short length of round brass rod or piece of hardwood, never hit the job direct with a hammer, even a rubber hammer. As for splitting a joint, try a knife blade tapped into the joint with a small hammer, a craft knife blade is very good. I sharpened a couple of old cheap screwdrivers to give a long shallow taper. But to be perfectly honest I can't see why the VW vans have their iconic status, not the recent models anyway, they seem to be loaded with problems, I even had a garage owner say he gets more VW's in for repairs than any other, I think I'm beginning to see what he meant. I cut my teeth on pre computer vehicles and am seriously thinking of getting an old Ford Transit ! At least if they have a problem you can diagnose it without the need for a scanner and fix it without too many expensive specialist tools. I'd like to meet the idiot designer at VW who put the slave cylinder in with the clutch.... a simple leak cost me £1500 for a new clutch to be fitted ffs!