Tristan210403
Member
so basically i was driving along and heard a sound then lost all boost, i drove along to a gas station because i was already low filled up and then my boost was back. i’m extremely confused, any advice?
there was no black smoke, my dad said he saw puffs of blue smoke from time to time but not constant while i was limping to the gas station. it’s extremely weird and it’s got him confused all the way too because the boost came backAny black smoke coming out your tail pipe? It sounds like you blew a boost hose, check all the intercooler/turbo piping. I’m not sure why the boost would come back unless your car went in limp mode and reset after you shut it off to fill up.
ah, that does make a lot of sense. we have vcds so tomorrow we’ll look at it and see what’s going on. thanks for all the help!"Limp mode" is the search term you are looking for. The ECU senses a boost issue and shuts down the turbo to protect it from damage. Toggling the power makes the ECU forget its opinion of the turbo and the power is back.
Lots of possible causes... a thorough scan with a VW-specific scanner like VCDS is a very good start. There's an excellent step-by-step troubleshooting guide listed in my sig to get you started.
i have the 2001 1.9 ALH, does this still apply?If you have a 2004 jetta you probably have the usual BEW boost hose tab wear which causes boost hose to pop off. On restart the ecu "resets" you'll have some boost but most will leak out and put you back into limp mode. You can get a kit called "BEW doggie collar" sold by vendors and on websites.
okay, thanks for all the help though guys!Not really, but looking for loose boost hoses is a good step regardless.
lol your fine homieDont even know why I thought you had a 2004, must have mixed you up with another person. My bad...