I just bought a 2006 Mercury Mountaineerand at start up the idle is at 1000. Is that normal if no what could it be? Thanks in advance for all the feed back.

Asked by Mar 20, 2016 at 08:10 AM about the 2006 Mercury Mountaineer Luxury

Question type: Maintenance & Repair

I just bought a 2006 Mercury Mountaineerand at
start up the idle is at 1000. Is that normal if no
what could it be? Thanks in advance for all the
feed back.

1 Answer

102,285

Don't trust the on board tachometer for exact RPM's as they can have an error as much as 200 RPM's. That being said the normal idle at full operational temp is about 650 in drive. The computer regulates the idle speed, you may want to check the throttle body and if it is dirty it should be cleaned as well as the idle speed control unit. Usually there will be a check engine light if the idle speed is too far away from specs. If the engine is allowed to idle for about 5 seconds does it start to drop to around 650?

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