Question about 2002 Mercury Sable
Stalls out in idle
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 2001 Mercury sable bad idle
CHECK THE PCV VALVE HOSE THAT CONNECTS AT THE BOTTOM OF THE THROTTLE BODY, THESE HOSES ARE KNOWN TO DETERIORATE AND ALLOW UNMETERED AIR TO ENTER THE COMBUSTION CHAMBER, WHEN THIS OCCURS THE OXYGEN SENSOR'S SIGNAL TELL THE PCM TO INCREASE THE PULSE WIDTH OF THE INJECTORS CAUSING THE VEHICLE TO ALMOST STALL.
Posted on Feb 27, 2009
SOURCE: stalls when idling
This generally is your throttle position sensor or Idle speed control motor. The idle is controlled by the Power Conotrol Module/computer & shouldn't really require adjustment at the throttle body if the components are installed & working properly.
The symptom you are describing is a textbook example of a failure in one of the parts listed above.
As always, I suggest you do check your air filter & fuel filter if not changed recently, use an OBD II tester to provide you with any engine codes that haven't yet triggered the "check engine" light. Some single codes don't trigger the light & some do, just a good check you can usually have done at a local auto parts store. Free as a rule from some of them. They want to sell you the parts! Good luck.
Posted on Feb 07, 2010
Sounds like you might have a stuck open EGR valve. Is the check engine light on. I would replace the fuel filter if it hasn't been replaced, also check the air filter.
Posted on May 31, 2010
Idle air control could be stuck. If so clean it with some carb and choke cleaner. EGR could be stuck partly open. If so clean that or replace it.
Posted on Feb 15, 2011
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