Question about 1993 Mercury Cougar

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High speed miss,new plugs,cap rotor wires fuel filter,cleaned tbs and maf,starts missing @60 mph rpms good 164000 miles ign mod.or coil dont know.tranny feels a little weird sometimes shifts good,other times have to let up on gas to get it to shift

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If its backfiring at 60 regap the plugs and check the rotor,, if this isn't the case and taking the tranny into the mix, I'd look for a vacuum leak of some sort

Posted on May 29, 2011

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