My temp gauge says its running hot, i stop, it goes right to clod, the engine doesnt feel hot when i open the hood, no smoke, no steam, i get regular oil changes. The fan comes on when it gets hot. and sometimes the temp gauge will say its cooler, then 20 seconds later, hot again. all my fluids are full.. i dont know what is going on.. PELASE help
Were is the other temp senors at on 97 mercury mystique
SOURCE: Hi: I read your answer to
Very correct the ECT is a 2 wire thermistor,when coolant temp increases, the resistance andsignal voltage decrease,If you disconnect the sensor the fan goes on, you just trouble shooted the vehicle cooling fan switch, If anything the signal to the gauge itself may be non-op and not getting to the indicator, try this with vehicle at warm up temperature if you turn the A/C does the fan turn on.it should if it doesnt the power juction box (fuse and relay in engine compartment should be checked, for any opeen fuses, By the way the guage information is from the PCM
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SOURCE: mystique 1996 overheat
I was told numerous times by the Lincoln Mercury mechanics that the car just "runs" hot.
SOURCE: 1997 Mercury mystique the engine cooling fan will not operate
it could be the engine coolant sensors on the thermostat housing it controls the fans when they work if your sensor is out you can unplug the sensor while running the motor and if they turn on after a moment(the fans)then the sensor is bad if not make sure your fans work by jumping power to them 12volt
SOURCE: So I have a 99 mercury mystique gs, cars running
You most likely have a head gasket going bad.
Remove the radiator cap when it is cold and then let it warn up,and see if you get bubbles in the coolant going by.
Thermostat could be stuck mostly shut,but wouldn't count on it.
SOURCE: I have a 2000 Mercury
Hi,
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.
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