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Your IAC valve next to the throttle body is likely stuck open. Remove it with a 1"1/4" socket, clean it and let it sit overnight, and then reinstall it. If it continues to stick open, it is defective and you will need to purchase a new one.
The IAC, when it is stuck in the open position, causes the 2.8L Fiero V6 to feel like it has a sluggish idle. You should also be seeing problems periodically when you start it, such as the idle jumping up when it first runs, and then dropping below 1k RPMS.
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How do you change the idle on a 1988 Pontiac Fiero 2.5L 4 cylinder?
This is controlled by the computer. You can set the throttle opening to prevent wedging and sticking but this should not change the idle speed.
Why does your 1988 Pontiac Fiero SE shut off when you park your car it?
Try cleaning or replacing the Idle air control sensor.
Where is the idle screw on Pontiac fiero?
There is none If the idle stop needs an adjustment the 2.5 four can have the stop on the linkage bent slightly to adjust If your 2.8 V 6 will not idle below 1500 rpm you most likely have a broken egr tube, very common failure. The Fiero Store has replacements, Google them.
Vacuum range 86 Pontiac fiero 2.8 v6?
A steady 20-25 at idle My freshly rebuilt 2.8 runs at 22.
How do you adjust idler to 1985 pontiac fiero?
There is no idler pulley on this year Fiero so you must mean Idle Speed. It is most likely that if the idle is high and it wont slow down automatically, 1500 or so, that you have a cracked EGR pipe between the intake and the EGR valve. There are replacements available on line from companies like "The Fiero Store"
Where it the idle air control valve located on a Pontiac fiero gt 6 cylinder?
It is mounted on the throttle body and has four wires plugged into it. It has a hex on the body to allow it to be unscrewed.
How do you know if the Intake gasket leaks on 1987 Pontiac fiero?
The engine runs fast, won't idle down, and many times the exhaust manifolds will glow red hot from the lean mixture.
Where is the idle air control valve on a 2002 Pontiac sunfire?
Where is the fuel idle control valve for a 2002 Pontiac Sunfire
Fiero 2.8 v6 what does the iac do If faulty can it make my engine idle at 2300 RPM?
The IAC valve is just that...The Idle Air Control Valve. It is responsible for keeping the idle at set parameters. And yes, it can make the engine idle at high RPM.
Where is the idle air control valve in 2002 Pontiac Bonneville?
The idle air control valve on a 2002 Pontiac Bonneville is located on the intake manifold. This valve allows direct adjustment to the engines idle system.
When was Idle Gossip created?
Idle Gossip was created in 1986-08.
How do you set idle on 1986 fiero gt?
Please read entire answer!You don't adjust the idle, the computer does this for you.If it will not idle down, usually not below 1500 rpm, you very likely have a cracked or broken "EGR" tube. This tube runs from the exhaust pipe from the EGR valve through a fabric insulating cover under the intake manifold. It will be cracked under the fabric cover.I just blocked mine at both ends with metal plates, this is illegal in many places!"The Fiero Store", an on-line supplier, has replacements.If this is not your issue you will need to have your vehicle scanned with a scanner that will show actual sensor and computer activity.
