Mechanics

ENGINE CONTROL MODULE

2001 Mercury Sable

Electrical problem
2001 Mercury Sable 6 cyl Front Wheel Drive Automatic 137000 miles

I've had this car for 2 1/2 years and have had many issues that I think are related. 1) Security alarm turns on at night if doors are locked. It can be locked all day, but only turns on at night. 2) My head lights will turn off sometimes if the Auto is selected. 3) Right front brake turns on while driving warping the rotor. 4) Radiator fan would not shut off and drained battery. 5) The low coolant light comes on randomly. 6) After a car wash the check motor light comes on and car misfires. 7) Humidity also causes low coolant light and check engine light to come on. No codes are in memory when checked and disconnecting the battery usually clears lights on dashboard. I think it's the ECM.
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55082m
March 25, 2009.



Some problems may be related, but for many they are not.

1) Security alarm turns on at night if doors are locked. It can be locked all day, but only turns on at night.
***Possibly the PCM***

2) My head lights will turn off sometimes if the Auto is selected.
***Could be your sun load sensor or the auto lamp relay***

3) Right front brake turns on while driving warping the rotor.
***Check the wheel hub bearing, and your brake caliper***

4) Radiator fan would not shut off and drained battery.
***Radiator fan relays***

5) The low coolant light comes on randomly.
***Coolant level sensor, inside the coolant reservoir***

6) After a car wash the check motor light comes on and car misfires.
***Water leak to the the engine bay, causing shortage to your system***

7) Humidity also causes low coolant light and check engine light to come on.
***Same as water leak to the PCM. No cause and effect to the coolant level sensor.***

Tiny
Zackman
Mar 29, 2009.


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