Question about 1997 Buick LeSabre

1 Answer

97 Buick 3.8

I replaced the plugs and wires twice already,they all look good and were burning white and all of them the same. I checked the codes,no codes. I did notice the overflow container goes down but not that much. The tailpipe is black on the inside. I did not due a compresion test yet.One owner car that I purchased from my mother.I never see any smoke from tailpipe.

Posted by etbreezie on


1 Answer


  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Buick Master
  • 19,396 Answers

Exhaust tailpipe black on the inside is normal, check if you get white smoke from exhaust when engine is hot that means head gasket problem. If car fail going up an hill it is often a compression problem.
If car has automatic transmission, it can be also tranny not shifting down gear, this usually is a module problem, but you told me you checked this already.
Also a faulty throttle position sensor can give transmission problems, but when this is faulty you get troubles with gears on all situations.

Posted on Aug 12, 2008


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How to check & fix wiring on abs system.

If bearing/speed sensor assembly has been changed most lokely wiring. Use an ohm meter hooked between the two pins of the wiring harness side plug end. There will be resistance on this plug. Move/bend the wiring while the meter is hooked up and observe the reading. If the reading changes drastically or goes OL then the harness is bad. These harnesses are common problems as they flex as the wheels are turned. The dealership sells them for replacement.

Oct 12, 2015 | 2007 Buick Rendezvous

1 Answer

2003 buick park avenue misses badly on acceleration or hill climbing. ZSpark plugs show burn lines on ceramic part replace and it reoccurrs

Did you also replace the spark plug wires? The burn lines on the ceramic would indicate that it's jumping fire. Are the burn lines on ALL the plugs or just one or two? If you look closely at the wires in the dark, you will be able to see the spark jumping to ground if the wires are bad. If you have already replaced the wires and still have that issue, it's possible that you have a bad coil pack or ignition module.

Dec 18, 2014 | 2003 Buick Park Avenue

1 Answer

How to fix P0300 code on 97 buick lesabre

You may need to have it checked out by a garage. The code senses a misfire but cannot say where it is coming from. It is a nuisance code and can get very frustrating.

Feb 19, 2013 | Buick LeSabre Cars & Trucks

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

1 Answer

Terraza P0303 Code. What's most likely cause? Injector, spark plug, wires or any of the above?

Might be dirty injector or burned valve. Check the connector on the injector. If good, run a compression test on all cylinders. If compression is significantly lower on #3, the head will have to come off. If compression is good, pull up the injector rail with injectors and wiring attached. Watch the injectors spray as someone cranks the engine.

Sep 02, 2017 | 2005 Buick Terraza

1 Answer

Hello my name is jesee and i have 97 honda civic coupe and i have a code readn of p303 now what does this mean? i would have to change in order to get code off?

Hi, this is a misfire on cylinder 3. #3 is third back from the fan belt. Remove the spark plug, reattach the wire, and hold the plug to the engine metal while someone cranks the engine to see if the plug is sparking. If not, you need to replace the wire or the plug. Try changing the plug first, as wires are expensive. If the plug sparks OK, then the problem is likely a burned exhaust valve or a clogged injector. These require more work. Please get back to me if you want tpo know how to check those.

Feb 11, 2011 | Honda Civic Cars & Trucks

1 Answer

I have 1999 oldsmobile alero v6 it has a bad miss i have changed plugs already

replace plug wires, one or more may be bad. if still the same check coils, to see if ok! if bad there will be a burn mark on bottom of coil. the burn marks are usually white.

Sep 10, 2010 | 1999 Oldsmobile Alero

1 Answer

'97 A4 1.8T, coolant leak resulted in brief overheat,leak fixed,diag.code now shows #2 cyl.missing (badly), compression good,injectors good,coils/plugs good,missing badly,could the brief overheat have

did the car over heat for long?
there could possibly be damage to your head like warping due to overheating and blowing a head gasket or something along those lines .
first check the oil dipstick is it milky?
then check the coolant is it oily?
and when it is running is it blowing any white smoke?
if you replaced the plugs and it is misfiring did you plug the wire all the way back on the plugs if not then the problem is a plug wire being loose and loosing connection with the plug.
sounds like a simple fix if you don't have water in your oil or white smoke coming out the exhaust.
troubleshooting it can be a bigger job but if you nail the right symptoms down you can corner the problem.
like if it is a coil pack or bad wire switch them with another one and see if the problem follows the wire or coil pack.for instance take the number one plug wire off and the number two wire off and put the number one wire on number two and see if the number one misfires. if so then the wire is the problem if not then try numbers three and four until you find out which cylinder is the culprit.
good luck and happy hunting.

Jun 02, 2009 | 1997 Audi A4

1 Answer

97 buick riviera check engine light

The code is for the TPS , several things can cause this tps not plugged in , or plugged in after the car was started. If the car runs good go to auto zone let them erase the code for free with their scanner and then see if it comes back on. most likely it was just a accident. but go check to make sure it is plugged in and that the wires to it are not pinched in any way.

May 28, 2009 | 1997 Buick Riviera

Not finding what you are looking for?
1997 Buick LeSabre Logo

365 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides