Instigatr
Well-known member
So I have been having an overboost and boost creep problem on the 03 Golf I inherited from my brother. Thankfully he did put a boost gage on it, as at one point i was hearing some funny noises from the engine. Looked at the boost gage and it was pegged at over 30 psi. Took my foot out of the throttle immediately, boost dropped immediately, and then started playing with boost to get a better feel for what's happening. When the car is cold, it will overboost bad. As the engine warms up the overboost problem gets better. Once fully warmed up, then the boost spikes to 20 psi and then drops to 18 psi. If I keep my foot in it, pressure starts climbing, somewhat gradual. Don't know how high it will go, honestly don't want to find out. I have found some paperwork possibly for the upgraded turbo my brother put on, but it lists it as an upgrade for a BEW engine. It is a Garret turbo, GT1749V. Garrett part number 778445-5002S. I have not been able to determine if its possible to take the electronic actuator off and bolt the original ALH one on. Anyway, does anyone have any ideas for me to check? First thing comes to mind is moisture in the turbo lines somewhere, but how if so? And since it gets better as it warms up, it kind of leads me away from the moisture problem.
I am learning here, just difficult to make my Toyota brain transfer over to a VW brain
Aaron
I am learning here, just difficult to make my Toyota brain transfer over to a VW brain
Aaron