Car wont start without

[67txcamaro]

I have 5.3 with ls1 intake and the car wont start without pressing the accelerator and as soon as let off the car turns off. I have checked for vacuum leaks. the plugs are black as can be. i am running a maf sensor. we did notice that the o2 sensors dont seem to be working right with a scanner. i did buy them from the dealership. they are new. the computer is not throwing any codes.

[kevin_l]

Can you monitor the idle air control valve? Sound to me like its bad.

[67txcamaro]

where is that located

[kevin_l]

Top sensor of the throttle body.

[67txcamaro]

we replaced it and started right up stayed on for 1 or 2 min and we turned the car off then tried to start it and i did the same thing. we are thinking it has something to do with the computer

[kevin_l]

Hmmm,, well at least we're on the right track. Still no codes?

[67txcamaro]

we have decided to let the pro's take over. I have an appt with nelson performance on Tuesday.