scottncincy
2/2/2008 7:14:27 PM
I have a 1994 sedan deville (devil ) with the 4.9 motor, had a tuneup new coil pack ect but lately after about 15 minutes or when it gets warm it starts to idle high and or stalls and when i put on the gas it tries to die also, ive also replaced the map sensor and the idle speed control. is this a common problem with these cars ? please help
stomper
2/3/2008 5:15:18 PM
quote:
ORIGINAL: scottncincy
I have a 1994 sedan deville (devil ) with the 4.9 motor, had a tuneup new coil pack ect but lately after about 15 minutes or when it gets warm it starts to idle high and or stalls and when i put on the gas it tries to die also, ive also replaced the map sensor and the idle speed control. is this a common problem with these cars ? please help
did it start AFTER the new coil pack or before?
checked the throttle intake for carbon?
tested TPS ?
slowroll
2/4/2008 5:11:58 PM
SES light? Check fuel pressure.
brolajit
2/4/2008 8:35:53 PM
i had one that did the same thing. check fuel pressure but make sure you get it to do it at the shop!! very important it cured mine of the same prob bad pump
