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  1. C

    Check Engine Light 97 Mountaineer

    1997 Mercury Mountaineer 5.0 liter Check engine light on, took car to Pep Boys for free code check. Two codes came up. P0340 cam position sensor and P0443 evap purge control valve. Car runs fine but cant get through emissions inspection with CEL on. Read posting about possible alternator as...
  2. C

    check engine codes P0340 P0443

    1997 Mountaineer 5.0 liter 140,000 miles. Check engine light on for over a year. Checked codes and P0340 (cam position sensor) and P0443 (evap purge control valve fault) came up. Car runs fine, mileage bad but has always been bad. Pulled battery terminal to reset CEL. CEL stays off until...
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