Question about 1998 Buick LeSabre

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Buick Lesabre Rough Idling, acceleration issues, wont start.

1998 Buick lesabre loses acceleration power when stopping then going. Acceleration then kicks in. Engine Light says bank 1 too lean. Recently, started up the car, idled really rough (exhaust was rumbling) and then it just shut off. This has happened before, and coolant was leaking into the intake. Had to get intake replaced, new oil, new spark plugs. When I got it towed to garage after it stopped running, Garage said it was starting right up when they started it. They probably think I am crazy because I keep bringing it there and it seems to start up ok every time!

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  • Buick Master
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Take your Buick to a shop where they can actually identify the head gasket leak.

Posted on Apr 27, 2017

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6 Suggested Answers

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Posted on Jan 02, 2017

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fastboyz
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SOURCE: rough idle

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

Posted on Aug 24, 2008

SOURCE: P0171 Code (Lean Fuel Bank 1) Engine light on

you nead to check all you vacuum lines for leaks it sounds like you have a vacuum leak or the o2 sensor is going bad on bank 1 **** i still say vacuum leak

Posted on Nov 23, 2008

  • 11 Answers

SOURCE: rough idle engine shakes

possible IAC (idel air control valve) takes about 30min to change out

Posted on Mar 30, 2009

  • 2 Answers

SOURCE: What is the towing Capacity?

The standard AND maximum towing capacity on the Custom and the Limited are both the same, rated at 1000lbs.

Posted on Apr 27, 2009

  • 36 Answers

SOURCE: tightening sequence diagram for a 97 buick lesabre

Bellow is an "example" of the tightening sequence for an intake manifold. The sequence is usually the same for most vehicles, but you should refer to a Haynes/Chilton manual for your specific make and model of vehicle to verify tightening sequence and torque specs. Please rate/vote this reply if you found this information helpful.

intake-torque.gif

Posted on Jun 01, 2009

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1 Answer

Buick Lesabre squeaks when idling and accelerating


You do not have a timing belt

You need a mechanic to actually listen
to & diagnose those issues

Not something one can do over the internet

Jul 25, 2012 | 1992 Buick LeSabre

1 Answer

Buick 97 LeSabre hard start and acceleration issues


Have you checked the catalytic converter? After 20 years they do pug up causing some of the problems you describe

Apr 09, 2017 | 1997 Buick LeSabre

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1998 Buick LeSabre stalling.


Fuel trim will help,if the number are both positive at idle and go positive at a higher RPM you dealing with a fuel issue.There beem times the pressure regulator acts up,The EGR wont be the problem,you are stalling at idle,The famous crank,cam or ignition module,use a voltmeter or labscope measure the crank signal out put if its lower than 5 volts the ECM wont give a fuel signal.and the cam will not sychronize,I am going with the most popular failure a crank sensor as the solution,

Apr 01, 2012 | 1998 Buick LeSabre

1 Answer

92 buick lesabre 97000 miles, on slow acceleration, @ 40mph going into 4th gear there is a mild chutter, same @ 50mph going into OD mild chutter and when down shifting from OD to 4th. All is when slow...


This sounds like a vacuum leak prob. At low acceleration there isn't quite enough vacuum for smooth shift.. But romp on it and it creates a vacuum at the same rate as your gas is getting sucked.

Dec 23, 2011 | 1992 Buick LeSabre

1 Answer

1999 buick lesabre engine surges a d sometimes dies when accelarating only when in gear not while idling in park


Hello,
The problem you are experiencing with your car is as a result of a bad fuel pump or a clogged fuel filter,the fuel pump supplies fuel to the engine,but there is an epileptic power failure in the fuel pump when the car accelerates at times,hence there is no sufficient fuel supply during acceleration therefore the car engine dies at times when accelerating.
The solution is to replace the fuel pump/clean out or replace the fuel filter of your buick.


Have a nice day!!

Dec 11, 2010 | 1999 Buick LeSabre

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Hi: re a 2000 lesabre w 86,000 have an auto tranny shifting problem. It's not too bad, but noticing knocks/hard shifts when slowly accelerating from a stop (underload up a grade mostly). Can also be at the...


Sounds like the vacuum modulator on the side of the transmission or the vacuum hose going to the unit. I'm not sure if buick Is fed off of the carburetor vacuum or there's a vacuum tree on the rear of the engine block that may feed it as well. Typically if there is a vacuum leak to the modulator, your engine power will be decreased and your engine will be running rough.

Jun 07, 2017 | 2000 Buick LeSabre

1 Answer

1987 Buick Lesabre T stalling and running rough


I just had the same problem. Replaced the fuel filter,still crappy idle and no acceleration. I replaced the fump pump along with the wiring harness and the fuel pump screen and my cars purrs like a kitten,has back to normal acceleration and idles better than before. Hope this is some sort of help to you. I did it myself. Total cost, a little over $120. Good luck. By the way, your fuel pump should be pushing out about 65 lbs of pressure. is it ???

Apr 08, 2009 | 1987 Buick LeSabre

2 Answers

1992 buick LeSabre transmission troubleshooting!


92 Buick lesabre 97000 miles, on slow acceleration, @ 40mph going into 4th gear there is a mild chutter, same @ 50mph going into OD mild chutter and when down shifting from OD to 4th. All is when slow acceleration. When I say slow acceleration, I mean I drive like a older senior citizen when everyone behind me is annoyed I don't just donor and go. When I do romp to accelerate quicker, there is no chutter at all. Fluid is good and at perfect level. Any ideas? Great car just wondering the scoop is

Mar 01, 2009 | 1992 Buick LeSabre

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