tim_cleav

I have a 2000 Audi s4q 2.7l twin turbo, recently purchased so not sure of the history on the car. I had the car 3 days, before anything went wrong. The car will start and run great when it seems to be cooled down, soon as you drive it a few blocks it will die and won't restart. the ect sensor has been replaced so far, I have noticed the fuel lines feel like they are pulsing when the engine is running, and the connector for the MAF sensor is messed up, when you wiggle it, the car wants to die. has anybody seen this before? any help would be appreciated.

- would sludgy oil cause this? or could it be a ecm or pcm problem?

also it has these codes

P1423 - Secondary air inj. sys bank 1 flow too low

P1411 - Secondary air inj. sys bank 2 flow too low

P1544 - Throttle actuation potentiometer signal too high

P1171 - Throttle actuation potentiometer signal 2 range/performance

P0322 - Ignition/distributor engine speed input circuit no signal

P0102 - MAF circuit low input

P0154 - O2 sensor no activity circuit


I knew the O2 sensor code was on when I purchased the car, and it ran fine like that for 3 days, so not really worrying about that one. I did have the maf sensor unplugged and the TPS sensor unplugged, which may have caused the P0102, P1171 codes.

any help would be great thanks!