Question about Ford Contour

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1998 Ford Contour temp gauge shows car is running hot. AC/Heat working, cooling fan engages, replaced thermostat and coolant temp sensor (did not use Ford parts - Salvo's Auto. Car does not shake and no smoking. Only has 68K miles anyone has any idea what's possibly going on with this issue.

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  • ilmrmm Jul 14, 2009

    The coolant tank shows full and nothing is coming out of the exhaust. I did get a P0118 Eng coolant temp ckt - high imput on the OBII check

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Aftermarket "Gauge Senders" (the lower/hidden one in the thermostat housing only sends the gauge signal) for Contours notoriously read high. In the case of this sensor, with this specific car, go with a Motorcraft sensor, if you don't want to do the stealership route, rockauto has Motorcraft too. Seen this on emore than once.

Posted on Dec 26, 2014

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  • Master
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Hi there,

you may have a problem with the cylaner head gasket. if you have an empty radiator and it all goes out of the exhaust, the problem will be here. the solution is to get a new head gasket to replace the old one and probably to have the head gasket skimmed as well.

Good Luck!!

Thanks

Posted on Jul 14, 2009

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What is the actual temperature that the cooling fans come on, i assume you can read the ECT sensor? the fans come on at 225-230 degree's Fahrenheit, this is 2/3 of the way to hot, just want to make sure u are not chasing your tail. do this overheat at highway speeds or just at idle or low speed, if it is really running hot. I am a 25 year Ford dealer tech so know this car well.

Posted on Jul 14, 2009

  • yadayada
    yadayada Jul 14, 2009

    here is useful info on the code P0118



    Potential Symptoms
    Symptoms of a P0118 could include:


    • Very poor fuel economy
    • A no start condition
    • Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
    • Illumination of MIL

    Causes
    A code P0118 may mean that one or more of the following has happened:


    • A bad connection at the sensor
    • An open in the ground circuit between the sensor and the PCM
    • A short in the voltage feed between the sensor and the PCM
    • A bad PCM (less likely)
    • A bad temperature sensor (shorted internally)

    Possible Solutions
    First, if you have access to a scan tool, check the reading of the coolant sensor. Does it read a logical number? If so, the problem is likely intermittent. Perform a "wiggle" test by wiggling the connector and harness to the sensor while watching the reading on the scan tool. Watch for any drop-outs. Drop-outs would indicate a bad connection. If the scan tool reads an illogical temperature, check the resistance of the temperature sensor. If it is out of specs, replace it. If it is in specifications, unplug the sensor and, using a fused jumper wire, jumper the two terminals of the connector together. The temperature reading should now be maxed out to above 250 degrees F. If not, there is likely a problem with the ground circuit or voltage supply.

    Check for 5 volts reference voltage at the connector. Also check for ground presence at the connector. If you do not have 5V ref. and/or ground continuity, check for these back at the PCM connector. If you have these at the PCM connector, then repair open or short between the PCM and the sensor. If you do not, remove the offending wire from the PCM and then check for proper voltage at the PCM pin. If it's present now, repair short on the circuit. If it isn't present after removing the wire and checking the pin, replace PCM

    NOTE: Usually, P0118 is indicative of a bad temperature sensor, but doesn't rule out these other possibilities. If you're unsure of how to diagnose a PCM, do not attempt.




  • yadayada
    yadayada Jul 14, 2009

    remember the ECT (engine coolant temp) and the gauge sensor on the engine are two different parts.

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