Question about 1990 Buick LeSabre

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99 buick lesabre the check engine light doesnt come on at all how can i fix that

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BEFORE YOU CAN ATTEMP ANY REPAIRS U MUST HAVE THE SYSTEM TESTED FOR THE FAULT CODE THAT IS STORED EACH TIME THE LIGHT IS SET, THERE ARE OVER 50 SUCH FAULTS POSS IN YOUR CAR, SO HAVE THE TEST DONE.

Posted on Jul 22, 2009

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Posted on Jan 02, 2017

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Vacuum routing diagram for a 1998 buick


I suggest check the follow links for Lesabre 3.8L
- Fig. 46: 1998-99 3.8L (VIN 1) engine - Federal and California
- Fig. 47: 1998-99 3.8L (VIN 1) engine - Federal and California
- Fig. 48: 1998-99 3.8L (VIN K) engine - Federal and California


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Dec 22, 2011 | 1998 Buick LeSabre

1 Answer

99 Buick Lesabre Check engine light flashing.I changed wires and plugs but still misfiring on one cylinder, but all plugs are firing. Have 84,000 miles and has been running great until light came on and...


From the symptoms of the problem and the precautions you have done i think its time to check the EGR valve.Clean your EGR valve and then put it again. How handy you are in ding this?

As the check engine light is on did you scan for error code which will help you more specific to locate the problem.

Sep 23, 2011 | 1999 Buick LeSabre

1 Answer

1995 BUICK LESABRE ENGINE TURNS OFF WHILE DRIVING BUT STARTS UP WITH NOT PROBLEM.CHECK ENGINE LIGHT SOMETIMES COMES ON. NO IT SEEMS THAT THE CAR DOESNT USUALLY START UP AS IT USUALLY DOES. AFTER A FEW...


I would check fuses first. Then if there are no fuses fixed I check for bad battery cables if they are loose or really corroded I would clean them off or replace them. Then if that doesn't work I would have my alternator checked at your local auto-parts store.

May 02, 2011 | 1995 Buick LeSabre

1 Answer

The check engine light is coming on my 99 buick la sabre


Take it to a local auto parts store (Autozone, Murray's, Checkers, Napa) have them hook up a scan tool to get the diagnostic codes, write them down and post them here so we can further assist you. There are many reasons that can cause the check engine light to come on.

Jan 11, 2010 | 1999 Buick LeSabre

1 Answer

99 buick lesabre, battery ok, turn key to start, nothing


The security system (VATS/PassKey) is faulty. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.

Oct 16, 2009 | 1999 Buick LeSabre

1 Answer

99 buick lesabre started running rough know check engine light came on the car has 86,000 orginal miles. what can i check.


take it have theme read the codes maybe a vaccum leak,mass air flow sensor,egr valve could be numerous things the code will tell you

Jun 20, 2009 | 1999 Buick LeSabre

1 Answer

How do I reset my Check Engine Light?


you could go to an auto parts store and they can reset it for you, or you could pull your battery cables off the battery and hold them together for about 10 sec. that will clear any codes.

May 29, 2009 | 1999 Buick LeSabre

1 Answer

Engine light blinking


You may have a bad spark plug wire or plug, if that doesnt solve the problem it could be the ignition coil.

Apr 07, 2009 | 1999 Buick Century

1 Answer

Rough idle


fuel filters rarley cause idle problems. i would look at the egr valve or possible vaccume leaks.

Aug 24, 2008 | 1999 Buick LeSabre

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