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My 2003 Buick lesabre stalls out after about 15 to 20 miles. My fuel PSI is 50 at idel and have been told my fuel pump is not the problem. Everybody says the MAF sensor is probably the fix. Is this true? I have never had any go bad on my other cars. Please help me!! Thanks!!

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I think is going to be the crank sensor it send signal to the coils so they spark the sensor is located begind the crank shaft puley

Posted on Nov 02, 2012

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6ya6ya
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Posted on Jan 02, 2017

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bunnydawg
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SOURCE: Fuel pump in 2003 buick Lesabre

if there is an access plate you can remove then yes. but generally you have to drop the tank to get to it

Robert

Posted on Feb 06, 2009

tripletauto
  • 1450 Answers

SOURCE: 2000 Ford F450 with V10

have you cleaned the throttle plate? this is done by removing air intake hose and spraying out with cleaner and wiping it down open throttle and wipe off the butterfly and bore. this will usually cure a stumble.

Posted on Aug 20, 2008

  • 3 Answers

SOURCE: will start then dies

On the regals they have a ceramic resistor on the passanger side under the fender. It heats up and over time it tends to brake and the wire inside tends to rust away. The fuel pumps run in 2 different speeds. Had the same problem. Dealer only part yet the car would run and you would think it was the fuel pump. Turn the key it kicks on then start and dies out. Ceramic on the pass side would need replaced. It is white about 2-3 inches long or so held on with 2 bolts i do believe. Ill find a bulliten i found online to help me diagnos the problem. :) hopefully this helps someone out instead of spendin $$$ that ya cant afford with the recession eh?

Posted on Apr 01, 2009

fingaz22
  • 1068 Answers

SOURCE: Check Engine Light constantly on, car stalling out please help!

if you notice it when it is wet out then i would do a tune -up but if not i would check the fuel injectors because they are a very very common problem with these years of cars. i do them all the time.

please give me a repair history and i will try to help.

Posted on Oct 25, 2009

  • 196 Answers

SOURCE: Buick LeSabre makes funny sound!!!

It is a sign of a clogged convertor, but i happen to own the same car (with a series 2 3800) and had the same symtpoms going on when i bought if for the wife. Mine turned out to be a Exhaust Gas Recirculation Valve (EGR Valve).

To kind of get a feel for what is going on with the convertor, you can have someone help you but sitting in the drivers seat, with the car running. You go behind the car near the tail pipe. Now have the other person rev it up a little, not to much though. Put your hand but the tail pipe to see what kind of pressure the exhaust has. You can use another vehical to do the same thing to feel what things are supposed to feel like. If the convertor is plugged, the pressure of exhaust coming out will be a lot softer than it should be.

If after checking it as discribed above, if you feel it is plugged, grab a hammer, and bang the heck out of it. This will break up and loosen the clogged part without have to replace it.

There is no really good way to test a EGR vavle without a special computer. Replacing it however, does seem to me as the most likely repair for this vehical. It is located on the top of the drivers side of the motor. It look like a cylinder with a wire coming out of the cap, and is held on by 2 13mm nuts.

Good Luck....

Posted on Mar 24, 2010

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