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  1. C

    EGR code P0401

    CEL comes on with code P0401 "exhaust gas recirculation flow insufficient detected" This is on a '98 Mercury Mountaineer 5.0 2WD w/ 99,300 miles. A few months ago I replaced the EGR valve and the light came on within a day or two of driving - I assumed that I just needed to have the code...
  2. C

    Rough idle?

    Wife's car is a '98 Mercury Mountaineer 5.0 2WD. The car began exibiting the 'chirp' coming from the front of the engine. Appeared to be the drive unit for the cam position sensor. Based upon a comment here, I decided to try a stop gap by pulling the sensor and spraying white lythium...
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