Question about 2007 Mercury Milan V6 AWD Sedan
Check engine light came on. Scan indicated bad thermostat. Computer was cleared and light came back on about after about 600 miles of driving. Light stayed on for approx. 300 miles then went off and has not come back on since. Temp gauge runs on cool side and when on interstate gauge drops to half way between half and cold. Around town it runs just below half way. My gas mileage has dropped 5 miles per gal. Took to Ford to have thermostat changed and they said a scan of computer indicated there was nothing wrong - no code listed. They suggested not changing it. My question is, I feel it is a bad thermostat. I am worried instead of being stuck open, is there a chance it could close while driving? Would it be better having it changed even though there are no codes listed?
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Posted on Jan 02, 2017
hi , i am sorry to tell you that you are right you wasn't need a new transmission , the hole problem is in the controler and thank you for using fixya
Posted on Jun 27, 2008
SOURCE: gas mileage dropping
While changing all the filters and things, did you change the fuel filter? It could have just been poor quality fuel which can be caused by getting fuel from the bottom of the barrel so to say. If the station you got the gas at was getting low there is a chance that there was water in the fuel. Normally this would cause the vehicle to run a little bit rough, but not always. I would run another tank of fuel through it and see what you get on a second tank.
Posted on Nov 13, 2008
any of those sensors can cause that but the best thing to do is scan it or check for a vacuum leak with a smoke machine.
Posted on Jul 22, 2009
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