'90 LeSabre stalls dependent on how much gas is in the tank. Recently when tank was half full or less the car would stall when idling/decelerating (slowing for cornering or stop lights). Starts up most times, occasionally I have to put gas all the way to the floor to get it started. Now the problem is starting with a bit more than 1/2 tank of gas. I'm wondering if this is a sign of the fuel pump going south or if there are other problems I should be concerned with.

:screwy: Thanks for your help!:screwy:
Stalling in SD.

You know, my car started at below a half tank and then it started all the time. Like right now my tank is full and I still have a stalling and hesitation. I have been trouble shooting and replacing parts for the same problem for about 4 or 5 weeks now. If you find out what's wrong with your let us know, because I cant keep spending money to fix a car that I feel may have no help. But before you start replacing things without knowing, have your codes read.

mine showed no codes, but I am replacing my O2 sensor later on this evening, if that fixes it, I'll be sure to let you know.

If you haven't done so already, try replacing the fuel filter first. It's a lot cheaper if you're a do-it-yourselfer (about 10 bucks for the filter) your current one may be clogged.

My 93 acting a lot like this for a long time. One mechanic told me there is a baffel inside the tank that breaks and when it does the fuel moves away from the pickup to fast. I found it was cheaper to keep a full tank that it was to replace it. That has helped but I still have the problem when the temp is above 75 degrees and I drive it for something over 20 minutes so heat has something to do with my problem. So I may have two problems. I did replace fuel pump with one from a national parts store not NAPA or GM still have the problem. I did read on another thread that the fuel regulator fixed a similar problem. Bottom line I'm still looking for the gremilin.......and its been a ongoing problem for over three years for me. Its real frustrating:banghead: :banghead: :banghead: :banghead: :banghead: