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Old 05-31-2007, 18:51   #1 (permalink)
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98 contour coolant sensor error?

My 98 contour popped up with the OBD error P0117 (engine coolant temperature circuit low input) (my friend has an OBD). Just prior to that I noticed the engine fan running like crazy and the thermostat reading totally maxed out. My AC was also not working, all of a sudden.

Any ideas how to fix this? Is this just going to be a faulty coolant temperature sensor? Is this feasible for an "DIY oil and brake change guy" to fix, or is it going to require difficult things that I'd likely not be able to handle.
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Old 06-20-2007, 06:03   #2 (permalink)
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Re: 98 contour coolant sensor error?

I've come across this same problem a few times on 2.0L Mondeos and it's always been a fault in the wiring that goes to the coolant temp sensor, so far I've never found a sensor to be at fault. Disconnect the sensor and do a resistance check (it should change with temperature) and if OK check continuity from the sensor connector to PCM. I'm not sure how handy you are with a multimeter :) but I don't think of this as a "difficult thing". Hope this helps.
marc
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Old 06-20-2007, 08:38   #3 (permalink)
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Re: 98 contour coolant sensor error?

Thanks, I'll try it.
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