Idle speed cannot be adjusted on this model. No manual adjustments available. Problem may lie in fuel pump, or fuel filter or temp sensor.
If your engine is ideling fast its probably temperature senser. There is no adjustment for idle. that last answer is not entirely true. u can adjust the idle. but it depends on if its a throttle body unit that looks like a carburetor or a smaller unit. on a TBI unit, there is a screw u can adjust but the only way to adjust it is with the right tool. its not a Philips screw or straight blade. but if its idling high or fast it might be the idle air control valve. the one went out on my 1985 sunbird and caused it to idle funny.
Standard fuel pressure for a 91 Pontiac Sunbird is between 50 and 55 PSI. This is the idle pressure to allow for maximum efficiency of the fuel injectors.
Idle speed is computer controlled and is not adjustable.
all depends if it's carburated or fuel injected.
probably a bad idle air controller.
My pa says follow the throttle cable and you will find a nut that turns to adjust the idle. You can do this when the car is running, making it easier to see how much adjustment it needs. He says a half turn or full turn either way will usually do the trick. I need to find a diagram or picture for the throttle cable but hope that helps a little
You don't. If you are having an issue with idling check the IAC Valve.
There is no way to adjust the idle as it is controled by the computor. You either have a idle control mod. bad or crankcase sensor. Talk to your parts store and they should be able to give you some advise also.
There is a idle screw on the throttle linkage on the carb that you can turn to increase the idle speed and then hook up your timing light to check the timing.
That's a pretty vague question. Does it run ok otherwise?? Some things to check. Idle Air Control Valve, vacuum leaks, low fuel pressure, leaking injectors.
You can adjust the idle by removing the plastic splash guard right at the throttle cable and just turn the screw to increase or decrease idle.
There is an adjustment screw on the side of the throttle body that adjusts how open the throttle body sits.