1999 Mercury Grand Marquis "runs fine code" Questions

Runs rough at cold start. Sounds like it trying to **** air. Cold weather only. summer time car runs fine. Has the car been scanned for codes?

runs rough then it corrects itself and is fine. No codes showing up on the scanner While driving the check engine light comes on briefly. While the light is on (3-4 seconds) the engine runs very rough

My 96 mercury grand marquis will run with drivers side coil pack unplugged but cuts off the minute you plug it in. Then it will turn over but not crank and run It has a 4.6 liter engine. Was running ...

...engine light, vehicle is running fine, gas cap is closed O2 senor Could be a number of things. Take it by a parts store like Advance Auto and they will read the code with a computer for free for

fine, just had a few days of cold weather and now my check engine light is on troubleshooting code p1132 and p1152 are showing. Meaning? Don't know the codes, but check to make sure your gas cap is on

My 96 grand marquis is running rough. I checked the codes and have a random misfire . I recently replaced intake gaskets ,and it ran fine for a little while.Any idea where to start? Could be your EGR,

runs fine until you get to a certain mile(example-60mph..drops to going 12mph backfires and then starts running fine again.brought to dealer put on computer said its engine. code 172 and 18b Unless ...

...fine atfter it has warmed up. Sometimes goes dead at an idle The engine light came on. (4) service codes indicated sometype of air flow problem near bank #1. 1 code inidcated that it could be a fuel ...

1998 grand marquis cranks but won't start. Was running fine.Used OBDII scanner tool. No error codes present. 1st. You need to change the spark plug and wires if necessary. 2nd. Check and replace the ...

...runs fine. changed fuel filter and gas cap. engine codes are 172 and 176 Your codes indicate both sides of your engine are running lean. You may have success with a throttle position sensor. The TPS ...