Questions & Answers for: Pontiac iac sensor

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...rpm, cutting off once in a while. idle okay at 1500 and up. changed O2 sensor, coil packs, plugs, fuel filter and hoses that had leaks. still has same problem. check the IAC sensor, might be ...

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when I accelarate the car misses looses its idle wants to cut off. spark plugs. wires, mass air flow sensor, iac new. Maybe the Throttle position sensor or timing off.

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...i give it gas. it wont keep idling without my foot kept constant on the peddle. have you replace the fue filter? a sticking iac sensor can also cause problems starting also check the air flow ...

...sensor voltage is between 0.20-0.74), the PCM senses a near stall condition. The PCM will then calculate a new IAC pintle position to prevent stalls. If the IAC valve is disconnected and reconnected ...

sensor. See if either one is going bad. Try cleaning the MAF with MAF cleaner or replace it if it's bad. It's usually a process of elimination with cleaning the IAC, MAF or even seafoaming the intake.

Question about 1999 Bonneville

2 Answers

...iac and the throttle postions sensor can you help me i also the o2 sensor Sounds like a weak fuel pump.Check fuel pressure it should be 48-55 psi with key on engine off.If its not within these specs ...

...iac, iat, map, maf, tsp, crank position sensor and reluctor wheels, cam position sensor, 6 spark plugs , wires, smoke tested no leaks found. FUEL PRESSURE 45 psi at koeo. 38 psi at 3000 rpms. Coolant ...

Question about 1999 Grand Prix

2 Answers

...sensor and IAC valve can be cleaned. The mass air flow sensor is another problem area. Careful with that unit, it can only be cleaned with mass air flow cleaner, read-up and follow direction for that ...

Question about 1999 Grand Prix

1 Answer

rpms jump up down Can be a problem of : 1) MAF sensor. 2) IAC valve sensor. 3) TP sensor. 4) Engine Control Unit Consult a mechanic .

...sensor. I replaced it and then a few days latter the same problem, stalled at stops sometimes. I then replaced Map, IAC,Crank sensors also Fuel filter. Cleaned Throttle Body inspected wires , Vacuum ...

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