1996 grand marquis tranny shutter at 55 - 60 MPH
This vehicle has 24K miles is a 1996 Grand marquis v8 4.6L motor. The car will shutter at 55 to 60 and you have to accelerate to stop the shutter. We replaced the MAF and the local shop put trans cleaner and fuel injection cleaner to help remedy. No trouble codes and no check engine light. The vehicle has new tires now and it still shutters at 55 to 60 intermittenly. this is very fustrating since the car runs great for this mishap. a lot of people have mentioned TPS and O2's as well. any ideas or suggestions
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