My check engine light came on today, the code is 0701 and 0401 (7 long and 1 short and 4 long and 1 short). I checked the codes and that is multiple cylinder misfire, and intake air temp sendor. THIS ONLY HAPPENS WHEN STOPPED OR PARKED and the engine is running: the rpms will fall from usuall 700 rmp to 500 and rise back. Or when in "park" the rpms will fall from usuall 1000 to 700-600 rpms and the car will shake for a few seconds. Please help!. I already had the spark plugs replaced. What could cause that??.

 

please help!!!

 

1. Spark plugs worn or gapped incorrectly.
2. Vacuum leaks.
3. Incorrect ignition timing.
4. Uneven or low compression.
5. Problem with the fuel injection system.
6. Faulty individual ignition coils.....