Question about 2005 Mercury Mountaineer
2005 Mercury Mtneer Premier. 4.6L V8. 45,000 miles, no problems. At
cold start, rough running, wants to quit. After several minutes at higher RPM in park, temp gauge starts to climb, and engine runs ok. But CEL
is on all the time. Went to Advance Auto store. They used Actron code
reader. Said some funny error message. They could not get it to work ok.
Another friend said that engine coolant temp sensor was bad.
Thanks for any help from anyone. Regards, Joe Y.
Take it to a different autoparts store and bring pen and paper. Write down codes. You can use search on browser and key in "Mercury code xxx" xxx means whatever number you are told by autoparts. Internet explorer will pull up code. Chances are the second autoparts store may be more knowledgable.
Your cold start circuit is not working and your friend may be right about coolant sensor. Also, the reader Advance used will not reprogram your car. It only reads problem so you have to change physical parts yourself.
Good Luck Joe
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
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