Question about 1994 Buick LeSabre

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I've got a 94 LeSabre that is sputtering when it hits 30 - 45 mph. After that it cruises fine. Any ideas? thx

Even after it's warmed up if I drop back down into those speeds it will sputter.

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  • 462 Answers

Low jet is dirty

Posted on May 02, 2015

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2000 Buick Lesabre runs like ****

Sounds like a bad spark plug or spark plug wire arching out causing an engine misfire.

Posted on Nov 12, 2008

emissionwiz
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SOURCE: Car sputtering and cutting off

has the fuel filter been changed? this sounds like low fuel pressure due to a partially clogged filter or defective fuel pump..

Posted on Mar 26, 2009

ourhowse
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SOURCE: Car hesitates when excelerating from

Check timing chain. Sounds like it may have jumped a cog.

Posted on Apr 28, 2009

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SOURCE: When i start the car

could be the O2 sensors

Posted on May 06, 2009

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SOURCE: 1990 buick lesabre sputtering?

Crank posistion sensor. It's behind the pulley off the snout of the engine

Posted on Jun 20, 2009

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1 Answer

What does the MIL code "PO 320" mean, please?


code p0320 refers to cam shaft position (CKP) sensor/engine speed (RPM) sensor--circuit malfunction=== causes --wiring--CKP/RPM sensor ---ECM
because the engine runs ok until it is on cruise control I would be investigating the RPM sensor for a fault
The cruise control takes its control from the RPM sensor and if that circuit is interminable the the cruise control doesn't know what rpms to maintain.

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The tiny electric motors that move the needles on the cluster are prone to failing. New sets of them are relartively cheap on E-Bay. Takes patience and some skill to change them.

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Trouble codes 93 buick lesabre


The first thing you have not checked is fuel pressure.
The pressure could be low, or the fuel filter could be clogged.
It takes more fuel to run the engine in the first 5 minutes until it warms up than under normal conditions.
The codes mean the sensors are not giving the computer the readings they should, but it does not always mean the sensors are faulty.
If the engine is running rough, or the fuel mixture is lean, the sensors will show that.
Code 44 is O2 sensor reading lean which may be true.
Code 33 is MAP sensor reading low vac which may also be true.
Another possible cause is the coolant temp sensor may not be telling the computer the right thing. If it tells the computer the coolant is 200 degrees and the engine is cold, you won't get enough fuel thru the injectors.

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I have a 1993 buick lesabre with 31000 miles. it has sat for a year, tranny slips in first gear only. i manualy put in first gear and gently give gas it will start moving when i hit 10 mph i shift to...


Might be a good idea to have fluid & filter changed, due to possibility of moisture build up etc. from sitting. Certainly the most inexpensive, and reasonable solution. Have all connectors removed & sprayed with contact cleaner too.

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i had a similar problem it turned out to be a faulty fuel pump. Any mechanic should be able to do a fuel pressure test. to rule this out

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