Question about 2002 Mercury Mountaineer

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High idle problems

Hi

i have a murcury mountaineer with high idle problems. it stays at 2oooo rpm when you turn it on can anyone help................please

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There could be several issues causing this problem. For one, I assume you meant 2000 rpm, not 20000 as the engine would have expired before reaching that number.

Checking the computer codes on this would be the safe thing to do as the Throttle Position Sensor could have failed or is sending the incorrect information to the ECU. Another possible issue to look for is a failure of the throttle return, if memory serves there should be a spring on the backside of the throttle body. If the spring is broken or missing, this could leave the throttle open enough to increase the rpm. I would also check the throttle body/throttle blade for dirt. Normally a dirty blade results in a decrease of rpm but it might be possible that it is sticking and not closing as it should. There are special throttle body cleaners available - do not use carb or brake cleaner as they could damage the throttle body. Let me know if any of the above helps.

Posted on Apr 27, 2010

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Posted on Jan 02, 2017

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