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  1. J

    Rough idle/running issues. 2000 merc. mountaineer 5.0

    Recently my 2000 mercury mountaineer 5.0 has been acting up. At an idle it will randomly start idLing rough and when I am driving at cruising speed around 50 mph if I hold my throttle at around 1500 rpms it starts surging and running rough. If I give it gas it jumps up to about 2000 rpms and...
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