I have a 2000 grad am gt that has left me clueless to what's the problem. The car engine light came on and crank sensor code was present.
I also noticed the belt was not on the pully properly. It was riding inwards towards the engine. After some digging I determined that the harmonic balancer was the case of that issue . I'm hoping ..... So I replaced the sensor and while doing that I fixed a intake bolt that was stripped by putting a helli coil in. Put the car back together and wouldn't start. ... it had rained and the battery / and fuse box got wet. The battery won't stay charged and noticed when I attempt to turn over sometimes cranks fine other really slow and all lights dim out. .
Changed , fuel pump because it was low pressure in the rail. Didn't change a thing , used starting fluid it took a lot but car started but won't start if I spray gas into the intake. Checked spark it was not very good , but new wires, plugs and coil packs ...
Car backfires when turning over a while, also a poof of air from intake