Car running rough


Old 06-04-06, 01:25 PM
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Car running rough

i have a 2001 montero sport that tries to go dead at red lights , runs ok going down road but seems to not be running as smooth as it should what could be the problem?
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Old 06-04-06, 03:09 PM
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Could be a lot of things. Cars have always been known to run the best when run wide open (without much load/not up a hill). Song artists have even made songs regarding this.

What kind of idle speed are you at?

Have you or anyone done any tune-up service to this car at all anytime recently?

If this were my car, I would pull the plugs probably before looking at anything else, to see if they all looked alike, either for good or for bad... to see if any or all are carboned, wet, burning the electrodes down at different rates, cracked insulator, etc. Checking plugs is like giving yourself a blood pressure reading or electrocardiogram. It is a good indicator of things.
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