Mechanics

CHECK ENGINE LIGHT AND ROUGH IDLE WHEN C

2000 Ford Explorer

Computer problem
2000 Ford Explorer 4 cyl Four Wheel Drive Automatic 12000 miles

I have a perpetual Check Engine Light and Rough Idle when Cold. What is the most likely cause/
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Rparkins
February 24, 2009.




Hi: If the check engine light is on, there is a trouble code set in the computer that should identify the problem. Many nationally recognized parts stores will scan it for free, so I recommend having it scanned first. Chances are there is a vacuum leak or a problem with the temp sensor sending a bad reading to the computer. Does the vehicle seem to be running rich?

Joe



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