Gentlemen, have a 2002 gt with moderately rough running engine. Also my mileage has dropped off in the last couple of weeks. At about 1500 revs is runs as if it were missing just enough to be annoying. Still has great power and catches rubber into second with the auto.
Wondering if it could be a COP. Hasn't thrown a code or anything. Can the COPS go partially out or do they just die. Is it wise to get a new COP and just start swapping it out with the originals and try to find a problem or can they be checked. Have about 165K on the engine and just replaced the IAC. Throttle body and MAF are clean and I use seafoam about every 7500 miles. Plugs are irridium and about 25K miles on them.
Any ideas would be appreciated.
Lonestar
Wondering if it could be a COP. Hasn't thrown a code or anything. Can the COPS go partially out or do they just die. Is it wise to get a new COP and just start swapping it out with the originals and try to find a problem or can they be checked. Have about 165K on the engine and just replaced the IAC. Throttle body and MAF are clean and I use seafoam about every 7500 miles. Plugs are irridium and about 25K miles on them.
Any ideas would be appreciated.
Lonestar