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My 1993 Buick Leavers spots and sputters and sometimes loses power, I changed the fuel filter and did not have any issues for about 4 days. Then after 4 days the problem came back. What could be causing this? Fuel pump? Fuel relay?

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  • 13 Answers

Sa ethnie happend to my 1994 LeSabre. Turns out it was a broken vacuum hose. If these there is an air leak, the motor will sputter and loose power.
Hope this helps!

Posted on Jun 04, 2014

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Posted on Jan 02, 2017

  • 110 Answers

SOURCE: Jeep Cherokee Sport 1993 stalls after start up fuel pump issues

good morning to you and welcome to fixya.com. hope we can get you fixed here. just a couple of questions first? have you changed the fuel pump yet? if so where did you buy the pump from? your pump is actually building up to much resistence and is unable to overcome it in turn no power is getting to pump as needed. i have a grand cherokee with 230k so i love hearing that you have that many miles. lets keep you rolling. let me know and ill help you out.

Posted on Mar 07, 2009

bluelightnin
  • 35 Answers

SOURCE: Fuel relay placement 1991 Buick LeSabre. Replaced pump & filter still won't start

Your vehicle's fuel pump relay is located on the relay center, behind the glove box, 2nd column of relays, 2nd one from the top.

Posted on May 23, 2009

co7196
  • 3433 Answers

SOURCE: My 1993 Buick Le Sabre idles crazy and it stalls

The fuel gauge is a problem created at the pump change. Foryour current problem, I suggest you have the mass air flow sensor chk'd. It will cause the symtoms if defefective or dirty. Good Luck, Ned

Posted on Aug 28, 2009

  • 3 Answers

SOURCE: buick regal 92 3.8L Horrible fuel mileage

Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.

Posted on Mar 16, 2010

  • 31 Answers

SOURCE: 1987 Buick Grand National losing power, changed

Symptoms Like this usually point to the Fuel pump.

Also these cars suffer from inferior wiring to the fuel pumps and a substantial Voltage drop is noted between the Fuel pump relay and the Pump harness.

The fix for this is a "Hotwire" Kit

Fuel pump kits with a Hotwire kit are available at numerous Buick performance Vendors but the best stuff in my opinion come from Racetronix,com

You should also change the Prom Chip in the ECM to a modern
Chip from Turbotweak.
This will improve driveability greatly.

HTH

Posted on Jun 13, 2010

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