I got a 1988 mercury grand marquis LS that just about stalls when you drive it cold and put it into park. Cold meaning the oil is cold not the weather.
Re: I got a 1988 mercury grand marquis LS that just about...
It doesent mean the weather it works the same if the engine hasent been rann for awhile its not at operating temp try running it till it reaches normal temp if it does not stall its your cold oxigen sensor
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Good brand of 10W30 or 5W30 the 5W30 is a little lighter oil for cold weather. Both is ok. Just don't buy a cheap brand of oil . It won't stand up as well as a good brand.
The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.
You will need to test and replace the blend door actuator.
To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.
The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.
my 1988 merq grand marquis GS shuts off while parked or driving every so often. however is able to crank right back up. ive chaged the fuel filteron the under side body of the car, plugs and wires.my next step is to drop the tank and check for trash. what should i do or is there something else to look in to also.....
I'm not sure if yours is identical to mine since yours is second gen and mine is third gen, but with mine (1998 MGM), the heat was stuck on all the time. Full heat would practically cook your feet and you couldn't shut it off.
It was a servo/servo arm that controls the hot/cold mix door. The part was $15. The labor was $700. They had to take the entire dash out of the car to get at the part. Required two more visits due to a missed electrical connection to a daylight sensor and a vacuum issue that made the car stall when put into reverse.
My car had 150K on it at the time. Has 165K on it now. Still runs great and looks great. It's now my wife's auto and I drive a 2006 MGM.
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