Question about 2003 Mercury Mountaineer
2003 mountaineer V8 Temp gauge jumps to hot but not over heating. Replaced thermostat, no change. Engine reduces power and check engine comes on. If I turn car off for 10 seconds the temp returns to normal.
Can you have a feel of the radiator once you start in the morning is it hot all through once the thermor opens, does the fan comes on once it is hot. Do one thing put the A/C on and go for a spin see what happen.
Let Us know
Posted on Apr 15, 2014
The Engine Temp. sensor is bad. it is under the intake manifold. if there is a miss also check under the coils over the spark plugs. If there is Coolant in the spark plug holes .then the intake gasket is leaking. The intake manifold needs to come off to change the coolant sensor. When off look for corrosion on the cylinder head at the coolant port. If there is corrsion then the cylinder head must be replaced.
Posted on Jan 14, 2013
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: I have a 2000 Mercury
The overheating and lack of cabin heat both point to a failed engine thermostat which would be stuck closed. At the warm up stage, the coolant stays in the engine block to bring the engine to efficient operating temperature, then it opens and circulates the coolant through the radiator and heat core. If the thermostat is stuck closed, the engine will overheat, and coolant will never reach the heater core, and you will not get cabin heat.
Blinking oil light at idle which goes away during driving could be a low oil level, but may also be a drop in oil pressue. You could have a clogged oil fliter (at best) pickup tube, or a failing oil pump.
Posted on Mar 10, 2011
SOURCE: False temp reading
you will find that there is nouthing wrong all that is a bad reading due to a faulty body earth! seen it all before! just check your body earth points it will be one of those loose! or corroded!
think it's one underneeth the drivers side foot well plastic pannel I think? but it is definetly one of them stop worrying! you will find it easy now you know what it is!
Hope that helps (shuld do!)
Posted on Mar 10, 2010
Tips for a great answer:
Apr 10, 2015 | Cadillac Cars & Trucks
Apr 01, 2014 | Honda Pilot Cars & Trucks
Dec 21, 2012 | Chevrolet Cavalier Cars & Trucks
Dec 09, 2011 | 2003 Kia Sedona
Oct 20, 2011 | GMC Sierra 1500 Cars & Trucks
Jan 14, 2011 | 1999 Dodge Dakota
Jul 30, 2010 | 2003 Mercury Mountaineer
476 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: