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1998 mercury Mystique speed sensor

We need to know how to replace to seed sensor on a 2.5 litter mercury mystique? We have the piece which is with 2 bolt holes and than the wiring hardness, but can not find where it is to replace. The tranmission does really good, and than all of a sudden it will start jumping and driving very bad. This is what lots of people have said it was????

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SOURCE: 1997 mercury mystique problem

5 speed manual? Common problem (that and the shift from 2-3).

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What engine size and year?

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its a 6 I beleive its a 2.5

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SOURCE: need radio wiring diagram (color codes) for a mercury mystique

I hope helps with this...


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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

Posted on Jun 25, 2010

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