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    97 check engine light problems

    You can NOT clear the code by disconnecting the battery (although you MAY be able to delay it - not sure on that). You need a code reader that you can borrow from AutoZone or Advance Auto. I had a CEL on my 97 V6. Borrowed the code reader; it said I had a bad O2 sensor. One new sensor, one...
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    AC problem

    This function is controlled by vacuum from the engine. Several things can cause these symptoms: vacuum hose failed/off/broken, switch failure, or a stuck valve under the dash. Btw, I have these identical indications on my 97 V6 but I haven't fully diagnosed the problem. I really doubt that...
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    Surging Temp gauge.. slow heat

    The only time I had these identical symptoms (non-Mustang), I had a slow leak in the water pump that I didn't notice, and I let the radiator get down almost 40%. As a result, the car gave exactly the same symptoms. It would jump up, until the thermostat opened, then it would settle down, fairly...