1g Maf Problem

[DanthemanDSM]

I have a 91 TSI AWD, I had a 2G MAF installed, I have 450c injectors and the car would rev very high in park and i didnt like how it ran since it has alot of miles on it. I currently took it out today, I rewired up the 1G MAF sensor and installed everything back to stock, Now The car wont even start, It wants to crank but no start at all, When i put the key in and turn it one click usually the boost meter would jump to *0* and the cars check engine light would flip on and then turn off before turning the car on, But now Im getting nothing at all. The reason I am doing this is because my end clutch burned out in my transmission and i only have 3 gears to drive on and i dont want to over work the engine, I Just was talking with my performance shop and he asked if i could check the spark, So im doing that right now..

 

[dsm-onster]

Hmmm, usually when you don't see the CEL cut on at all when starting means a faulty ecu or connection that powers the ecu. I don't know why this would all of a sudded crop up after swapping back the 1g sensor. There's no voltage in the maf circuit that would over "fry" anything.

 

[steve]

My guess is you messed up wiring the 1G MAF back in and you shorted the 12v or worse the 5v sensor wire. The first would pop the MPI fuse and might fry the MAF but the second could pop the fuse, fry the MAF and blow the ECU.

Steve