car running rough

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sput - 11 Apr 2006 23:09 GMT

hi, thanks for help. i had new spark plugs put in because of the rumbling
at a stop and when i hit 40 mph. i was told it was spark plugs i needed.
it did not take care of the problem. does anyone know what else it could
be? thanks

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Bob Shuman - 12 Apr 2006 00:00 GMT

Make (Mitsu)? Model? Engine? Year? Preventive maintenance performed?

Hint: Providing this essential info would help you get better answers/ideas.
Since none is provided, I'll take a long shot and say clean the throttle
body assembly.

Good luck.

Bob

> hi, thanks for help. i had new spark plugs put in because of the rumbling
> at a stop and when i hit 40 mph. i was told it was spark plugs i needed.
> it did not take care of the problem. does anyone know what else it could
> be? thanks

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sput - 12 Apr 2006 00:37 GMT

its a 1995 galant 4 cylinder.

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Stewart DIBBS - 12 Apr 2006 01:41 GMT

> its a 1995 galant 4 cylinder.

That would be the 4G64 SOHC 16v would it not? "Rumbling" at idle and 40mph
is a clue. If you are down on power, it could have skipped a tooth on the
cam belt. If so, time for a new belt.

Did you have the cam belt replaced recently? Is there now a strong / loud
vibration at about 3000 rpm (which is about 40mph)? If so, the belt was not
put in correctly, and has the oil pump about 90 degrees out of phase.

We need more info to diagnose.

Signature

Stewart DIBBS
www.pixcl.com/lancerproject.htm

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