I have an 1990 buick regal custom and stalls when im griving it then dies can anyone help me on how to fix it.

Is there a good vacuum supply to the MAP

I WAS TOLD THAT SOMETIMES 3.8L IF IT HAS ABOUT 150K MILES THE TIMING CHAIN GET SLOPPY AND CAUSE;S THE ENGINE TO DIE !!! THEN START WHEN IT COOLS OFF ???

You might try a crank sensor, most of the time if you pull it out you may see a crack in it. It's between the top of the oil pan an the transmission, good luck.

most likley a fuel pump issue. The only way to know for sure is hook up a pressure gauge and when you have symptoms check the pressure. If you spray some brake cleaner or quick start when it doesnt start and it does start then this is an indication of a failed fuel pump or fuel pump relay. If it still does not start when you spray then you have an ignition issue like a crank sensor or ignition module.

The drive axle nut will need to come off and the torx bits to the wheel hub will need to be removed

First, have your daughter listen for vacuum leaks (young females generally have the best high frequency hearing) They will sound like a very high pitched whistle. Next, look for vacuum hoses that are damaged and leaking. Next, clean the throttle body. Remove the hose that goes from the air cleaner to the throttle body. Hold the throttle plate open and spray some throttle body cleaner (available at an auto parts store) in and scrub with an old toothbrush -- don't forget the top. There are other things, but these are the easy, common, obvious first tries.

Where all those parts, so bad,they had to be replaced? You tested them to determine that,and only then,you replaced them? Correct? Now you need help?

Idle position switch or sensor. I had 93 that would stall when i came to a stop. Cost me $43 but it was worth it. I don't know if this will fix it, but it sounds like it would.

Possible solution to stalling '99 Buick. My '99 Buick Century would die for no apparant reason with no error codes. After 4 days at a Buick dealership and many frustrated mechanics, the problem was corrosion from under the battery location. The wiring harness had small amounts of corrosion internally. Check the wiring under the battery for any corrosion. This has been the problem on more than 1 vehicle that we are aware of. No service bulletin has been issued by Buick.

there is a recall from the dealer that they will fix this