i have a 1991 mercury cougar runs ok until you pull a hill then it creeps along and jerks. what could it be?
Keywords:running rough
i have a 1991 mercury cougar runs ok until you pull a hill then it creeps along and jerks. what could it be?
Possibe tune up, fuel pump, sensor…
First place to start is to pull the check engine codes. This can be done at home for free, Here is how:
http://www.freeautomechanic.com/diagnostictroblecodes7.html
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