Question about 2005 Chevrolet Uplander
You have your foot on the brake. let off the brake idle goes up a little and smooths out.
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: rough idle at higher rpm smooth
You have a vacume leak somewhere. You can try to listen for it or you can get a can of brake parts cleaner and spray it around the engine. Anywhere there is hoses or connections of any kind. When you find the leak the engine RPM's will increase. If thats not the problem it could be your EGR valve is clogged or your map sensor could be bad. Those things would usually cause a check engine light. Vacume leaks wont. Good luck
Posted on Jun 19, 2009
SOURCE: 95 s-10 blazer idles rough
CHECK FOR A LEAKING INTAKE MANIFOLD GASKET, USE A CAN OF CARB SPRAY AND SPRAY AROUND THE TOP OF THE ENGINE, IF U HIT ON A LEAK U WILL HEAR THE ENG CHANGE TONE AND IDLE RPM.
Posted on Jun 25, 2009
Have you checked for any codes? Is the check engine light on? If there is any codes it will give you an idea of what to look for.
Posted on Feb 23, 2010
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