I removed the Turbo to test it because it was full of oil. I found out later that this was normal on this engine 2.0L TDI. While I had it off, cleaned some of the hoses and Air cleaner housing with water and WD40. Re-assembled everthing and engine starts normally and runs smooth but no power. It does accelerate slowly. Got a check engine light and a 16683 code(low boost below regulation). The next day I got the code 16486 (MAF something). I reset the codes and drove it again, did not get the check engine light but got the same codes when I hooked up a scanner to read them. I checked the VNT actuator and it moves when the engine is idling. Also put some suction on it and the actuator moved and stayed put until I released the vacuum. Checked all the hoses to and through the intercooler to the intake. All were tight. I cannot find anything obvious, could I have damaged the MAF when cleaning out the air cleaner housing with water and WD40? And would the MAF cause low boost like this. Kinda weird that I received the code for low boost way before I got a code for the MAF.
Any ideas or help would be greatly appreciated.
Its a 2005 Passat GLS TDI with 81k miles on it.
By the way it was running fine before I messed with it.
anic:
Thanks,
Bart
Any ideas or help would be greatly appreciated.
Its a 2005 Passat GLS TDI with 81k miles on it.
By the way it was running fine before I messed with it.
Thanks,
Bart