1992 Buick Lesabre Alot wrong here...

1992 BUICK LESABRE
Avatar
POLMTREE
  • MEMBER
  • 1 POST
Engine Performance problem
1992 Buick Lesabre 6 cyl Front Wheel Drive Automatic 97k miles

It has a very low idle and shakes alot. When I put her in park she will die more often than not, same as switching to reverse. Also I don't know how many mpg a buick should get but mine gets 8, I know this for a fact because I tested it. I also know that a buick should get more than 8. I was wondering if you had any ideas as to what might be wrong, I was thinking the throttle body or the fuel pump but I would like a second opinion. Thanks in advance for any help.
Sep 1, 2009 at 9:54 PM
Advertisement
Avatar
LOUT5369
  • CERTIFIED EXPERT
  • 217 POSTS
I would check the Fuel pressure regulator,It's mounted on the fuel rail and has a vacuum line coming off of it.Start the car,with car running remove the vacuum line,if regulator is bad fuel will come out of vacuum line.
Sep 6, 2009 at 6:59 AM