Questions & Answers for: 1992 grand marquis check engine

...Grand Marquis I recently had my transmission rebuilt due to a rough shift btw 30-40mph. A week later it was happening again so I took it back and they "repaired" it again. A week later its happening ...

...reverse and check engine light is always on they are not related. The check engine light just means you are not passing emissions right now. The reverse issue sounds like a tranny replace or

i have a 1992 mercury grand marquis in good condition and the check engine light turns on at higher speeds. when i get around 50 mph. any ideas? Have you had it scanned for codes? EGR?

...grand marquis wont start just clicks when trying to start it battery is good starter is good relay is new. what else could be the problem Make sure the connections to the battery are clean,and the ...

...a misfire. Check pressure coming from your exhaust because of a clogged converter. UNDERHOOD (right side) - you will see the OBD1 connector. Try using a scan tool if the check engine light is ...

...method to check this fault, is to have a hand held 'reader" plugged into the cars ECU and it will indicate the problem area in the engine which is causing the Check Eng Light to stay on. Good

be a sensor that is the issue. If you have a check engine light on, get it scanned at Autozone or Advanced. It may show the cause of this problem. That is your best bet if the check engine light is on

...check engine light to come on it comes on once the car gets warmed up. I thought it was cause the thermostat cause it was reading low temp so changed that now reading normal temp but light comes on ...

no power ran fine yesterday but today it runs bad Is the check engine light on, and what have you checked so far ?

1992 grand marquis check engine light comes on when driving. Garage used diagnose machine but came up with no code. Don't know what to do. Sometimes the oil light will appear as well, then car ...