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I have a 1999 Saturn SC2. Initial start up idle is 1100-1200 RPM. Once the engine reaches normal running temperature that lowers to between 1000-1100 RPM. Is that high or normal?
Wiki User
∙ 13y ago
That seems a little high.
Check for a sticking throttle valve in the throttle body. Often a piece of debris in the cable will keep the engine from idling at the right speed. Also check for anything that might be causing problems on the INSIDE of the vehicle; something loose around the gas pedal.
After you've checked out those potential problems, and if it still idles high, check for a vacuum leak. Trust your ears. Often a vacuum leak will make a sucking sound that seems abnormal for the engine. Start with anything that has been worked on recently; if the brakes have been repaired, check the brake vacuum line. Often a can of starting fluid (used judiciously) can help locate a vacuum leak. Spray a small amount of fluid at a suspected vacuum leak; if the engine RPM changes, you have a clue as to where the leak may be.
Good luck.
Wiki User
∙ 13y ago
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