take off IAC, spray it with carb cleaner, reset . I would start there. Next I would be looking at fuel filter.
I'd like to pick your collective brains about a problem I'm having with my
> '92 Camaro. The car has recently been acting up during my morning commute.
> The problem usually occurs after the car has warmed up, and approximately 2
> miles after leaving the house. The problem is that the car looses power as
> I'm holding the gas pedal constant (rpm and speed will steadily decrease
> while I hold the gas pedal in the same position). Sometimes during this loss
> of power it will also backfire. If I let off the gas, I will feel a brief
> surge before the engine drops down to idle. If I press the gas pedal all the
> way down, the engine will run like it should at wide-open throttle, but as
> soon as I let off the gas again, I'm back to the same problem.
>
> Usually this problem will persist for about 2 mi, and then the car is fine
> for the rest of the day. Has anyone else had this problem before? >
> I put an ohm meter across the throttle position sensor, and the resistance
> changes smoothly with throttle position, so I think I have ruled out a dirty
> TPS. The fact that it happens after the car is warmed up leads me to think
> that something in the close-loop mode is causing the problem, and that all
> of the basic stuff (like mechanical parts, plugs, plug wires, distributor
> cap, and rotor) are okay. (And I have already changed the plugs, plug wires,
> distributor cap, and rotor.)
>
> Thanks,
> Bob David
>
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