Question about Cars & Trucks
It could be that you have to adjust the idle mixture screw a little . It may be set too lean or too rich which gives what you describe When the engine is at operating temperature turn the screw in or out a bit until the motor runs better. Adjust then until it starts to run rough then screw it the other way until it starts to run rough again. Correct mixture will be in the middle of those points.
Posted on Jul 22, 2013
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Posted on Jan 02, 2017
This could be a number of things but i think that your problem sounds like a vacuum leak or an EGR problem. Try listening for leaks and try un-plugging the EGR solenoid valve one time.
Posted on Apr 17, 2009
Have you checked for vaccume leaks?
You've got lots of parts in there, Has the problem been the reason you have replaced all of those, or did it come up while doing some of the repairs?
Posted on Dec 18, 2009
Black smoke means buring rich. Have the vehicle's ECU scanned for codes and do the repair the codes describe. I'm gonna take a stab in the dark and say Mass Air Flow Sensor.(MAF)
Posted on May 07, 2010
Check your MAP and TP sensors. Your throttle body may be having trouble determining position and is compensating by adjusting RPMs.
Posted on Nov 30, 2010
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