Question about 1994 Buick Century

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My buick is idling high what should i do - 1994 Buick Century

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DEFIAYELY CHECK FOR A VACUUM LEAK. ALSO CHECK THROTTLE POSITION SENSOR AND IDLE AIR CONTROL.IF EQUIPPED. GOOD LUCK

Posted on Apr 15, 2014

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If the idle speed is VERY high (over 1000 rpm), check for broken vacuum hoses first, then check the EGR. Sometimes the EGR sensor assembly plastic becomes brittle and breaks, leaving a wide open hole into the intake.
Sadly, a common problem with these mid-90s Buicks is a cracked intake manifold. Did the car overheat recently? If so, have the intake manifold checked for a crack.

Posted on Apr 14, 2014

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