thanks lots for your answer. I have this mechamic telling me that you should not have 13.26 volts to the fuel pump and i started to think mabe too much volts is making the fuel pump get warm and not w
work properly seeing how he changed the whole unit out and car still does not run properly. wants me to send it to a wire tec. why does the pressure drop to 22lbs after engine warms up . but don't do it all the time. also some times will not start not enough fuel pressure. then when it cools down most of the time goes back to normal...
Sounds like the fuel pressure regulator. HTH. -Jim
Thanks for your answer really good call I should have said we replaced that already.
Search Buick LeSabre Questions
Buick LeSabre Experts