I am trying to determine why a 1988 Grand am with 2.3 quad 4 automatic has lost power and somewhat rough idle. We got it cheap. The previous owner said it would hesitate on steep hills. I drove it for about 60 miles toward home before it skipped for the first time. After making a stop, it seemed to be misfiring and backfiring, then caught and was OK. But then the first big hill after that it lost power and backfired - just making the hill. A mechanic did lokk at it and said all coils seem to be firing. I changed plugs (which looked pretty new). No difference. I changed fuel filter - looked original (fuel very dirty in filter). This helped idle but still has no power and won't even rev up much when in gear. Where to from here?
have the same problem?
Monday, July 23rd, 2007 AT 8:47 PM