Ok so we got my 5.0 back in the car, harness all plugged together, but my car won't stay started with the MAF sensor plugged in. It just revs to like 4 grand then dies. If you unplug it it idles down and will kind of keep itself alive. It's a 95 gt with a couple of mods.

 

Mass air sensor is bad

 

Oops got it. It wasnt gettin to the mass air.... It was leaking from the throttle body got her thumpin now