Question about 2005 Saturn VUE
The Idle Air Control Valve is located at the side of the throttle body. Once the duct is pulled you should see it sticking out. Cleaning is the first and the simplest thing you could do. Include the throttle body/intake when cleaning. Check also for loose vacuum hoses. Carb cleaner and contact cleaner for the electrical parts would do. IAC valve is the common culprit for stalling or rough idling.
If you can I would suggest to have a scanner connected to the diagnostic port to retrieve errors from the ECU if there are any. Some shops would let you borrow theirs.
Posted on May 26, 2011
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Posted on Jan 02, 2017
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Dec 31, 2012 | Cars & Trucks
Here is the common cause of surges, cold stalls, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours.
To correct this problem Buy a can of throttle valve cleaner (it is made by CRC) from the local auto parts store, NEVER USE CARB CLEANING SPRAY, IT DESTROYS THE ANTI-STICK TEFLON COATING, spray it into the air intake through the throttle body of the engine until you have used about half the can, you will need to hold the idle up while you do this, it will try to stall, after this shut the engine down and disconnect the Negative (-) battery cable for 5 minutes. The intake is now clean, if you continue to have the idle speed control problems you may need to seek the help of a professional.
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