Where is the map sensor in a 98 buick regal ls?

It`s a 2000 buick regal ls. make sure when it gets hot eh fans are running. There is a coolant sensor just below the top radiator hose ON THE ENGINE. This sensor tells the fans when to go on when the engine gets hot and also serves as a low coolant sensor. unplug the sensor and replace it. use a open end or box wrench. if your quick you can replace it and only loose a few ounces of coolant. Hope this helps and God Bless :O)

Speed sensor near transmission .

the oil sending unit is probably faulty and needs replaced. Not an expensive part. google 98 buick regal oil sending unit (images) and you will see what and where sensor is located, and wether you want to tackle the job yourself.

all lights ???

have u ever had a hard time getting the car to start??? not sure if this is it but maybe look around the site might give you some tips

Try to bleed the brakes agen

Is there a good vacuum supply to the MAP

i'd say you have a ground problem if you are burning up alternators... sorry if that don't help... i would have to see car to better appreciate problem.

the MAP ( Manifold Air Temperature ) its data is used to control fuel ratio / NOT THE DELIVERY OF FUEL Did you check the FUEL FILTER ?

1991 3.8 liter engines used a Mass Air Flow sensor in the intake tract (measures incoming air) instead of a MAP sensor. The MAF sensor is located on the engine just behind where intake hose is attached.