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A 1997 Suburban may idle up and down due to several reasons, including a vacuum leak, which can disrupt the air-fuel mixture, or a malfunctioning idle air control (IAC) valve that regulates engine idle speed. Dirty or faulty spark plugs, a clogged air filter, or issues with the fuel system can also cause irregular idling. Additionally, problems with the engine’s sensors, such as the throttle position sensor or mass airflow sensor, may lead to inconsistent idle behavior. It's advisable to check these components to diagnose and resolve the issue.
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Why would the idle jump up and down and try to stall after warm up on 97 626?
incorrect operation of choke choke not shutting off after warm up
What makes a 97 Saturn SC2 rpms go up and down while idling?
The Idle Air Control valve located in the throttle body.
What cause a suburban to shudder or idle rough at start up in very cold weather?
It may be in need of a good tune up.
What should oil pressure be for 1999 gmc suburban?
Its in your owner's manual. My 1998 runs about 40 PSI on Highway and 30 PSI at idle. Goes down a little when warmed up. Was a little stronger when new.
What makes a car idle up and down?
A car may idle up and down due to "Improper fuel mixture". (The fuel in the car may consist of an un-even balance of air or gas). However, there are a few other ways a car can idle up and down.
I hava a 92 suburban 2wd with a 4l80 is a 97 suburban 4l80 the same the bulk head on the 92 has 12 wires the 97 has 11 wires thank you?
If both vehicles have the same motor it should match up. You may have to order or make an adapter for the wiring.
What caues my 2001 Ford Taurus to idle up but want idle down?
idle speed controll or tps throttle sensor
4.7 liter magnum rough idle suggestions?
Check/ replace the TPS if the idle is up and down.
3.9L v6 starts then dies?
When my '97 Dakota did that, I ended up replacing the idle air control valve. That cured it .................
How do you keep the power steering pump pulley from turning when you try to loosen the bolt holding it to the pump on a 97 Suburban?
I a 97 pick up and the power steering pully is pressed on and pressed off
What would cause a 1990 GMC suburban to idle up and down and cut out frequently?
A 1990 GMC Suburban idling up and down and cutting out could be caused by several issues, including a vacuum leak, which can disrupt the air-fuel mixture, or a failing idle air control valve (IAC) that regulates engine idle speed. Additionally, problems with the fuel system, such as a clogged fuel filter or failing fuel pump, may lead to inconsistent fuel delivery. Lastly, ignition system issues, such as worn spark plugs or faulty ignition coils, could also contribute to these symptoms. Proper diagnostics would be necessary to pinpoint the exact cause.
Why does your ford ranger idle go up and down upon start up?
The IAC (idle air control) at the throttle body is usually the problem.
