Question about 1994 Buick LeSabre

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94 buick lesabre engine shut down while driving on the highway today.had this yesterday and my mechanic placed on diagnostic scanner.scanner reads rr module problem.i do have code as for its not listed on my billing invoice.

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PROBLEM:car does not always start or car shuts down while driving.SOLUTION:replace module!the 1994 LeSabre has two options the ECO-1 or the OBDM-1.My LeSabre was repaired by a master mechanic,who also replaced the computer because it was fried.My mechanic used the OBDM-1 module and replaced the computer haven't had a problem since.

Posted on Sep 21, 2009

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May have a bad crank sensor or control module,if car starts back up after it sit a while.

Posted on Sep 19, 2009

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95 buick lesabre check engine light goes on every time i hit passing gear or climb a hill. when i restart car it is off again.


Sorry to say, that is one of those GM cars that is difficult to retrieve trouble codes without special scanners. It was on some '94 and '95 GM luxury or upscale models (your LeSabre was one), where they put in the new diagnostic connector that became standard on all cars built after 1996- and called OBD-2 (for On Board Diagnostics, second generation). The problem is, your '95 model is typical of all early '90's cars and trucks equipped with the OBD-1 system. It only has 2 digit trouble codes, and there are not a lot of them, only about 2 dozen in total. The whole system is OBD-1, but the diagnostic connector is configured like an OBD-2 connector.
Some shops might have the scanners necessary to work on your car, some with high end scanners. Of course, GM dealerships would have the right testers, but they are outrageous in prices.
I would try to find someone who could get the codes for you. What you describe sounds to me a lot like a bad Mass Airflow Sensor, or MAF sensor. That is just a guess, though, and why I recommended you try to see if there are trouble codes. There should be at least one.

Nov 25, 2016 | 1995 Buick LeSabre

1 Answer

Moms 1997 lesabre dies after about one hour of driving. Today I replaced plugs wires fuel filter map sensor had ignition module tested and it was fine. I'm kind of lost on this problem and already...


check the fuel pressure from fuel pump it may be bad. its a possibility that the coils maybe getting hot and shutting down engine. but check the fuel pump relay in fuse box. to see if this is your problem. it could be getting hot and shutting down, just replace it.is the check engine light on ! if so you can go to auto-zone and they will scan it for free of charge. to find problem code. with OBD-II scanner. good-day !!

Jul 11, 2011 | 1997 Buick LeSabre

1 Answer

Car stall while driving on highway or when coming to a stop, it will re-start immediately but keeps stalling out.


Run a diagnostic scan to help troubleshoot---Fuel pump or crank sensor would be a good place to start guessing.

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1 Answer

Other times my car will stall, sputter, **** while driving and seems to not be getting gas. Even going 70 down the highway it will stall. When it stalls while driving the dash lights come on.This happens...


check for corrosion on the sparkplug wires, both ends. Crankshaft position sensor, cam position sensor and lastly, gulp, the ignition control module..

Sep 07, 2010 | 1994 Buick LeSabre

1 Answer

94 buick lesabre starts ,runs ,then when shut off will not start


If the service engine light is on, it could be a faulty sensor or anything electronical with the car. It may even be something non noticeable. The only way to check exact problem is to run error codes.

Aug 07, 2009 | 1994 Buick LeSabre

1 Answer

1995 Buick LeSabre - Stalls then restarts while driving


Has the fuel filter been chg. lately. If it has, maybe a fuel pressure test is in order. Fuel pump might be geeting weak and does not show up until it gets warmed up. Fuel pumps are a common problem on this type of cars.

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1 Answer

1997 buick Lesabre studers when driving over 50


Sounds like what is called shutter changing to synthetic fluid fixed my 98 Lesabre

Jan 25, 2009 | 1997 Buick LeSabre

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2001 Buick Lesabre


Do you have check engine light on???if so scan it OBD 2 yue$$ding isn't the way to go,if you don't have a check engine light on then perhaps coil pack!!! coils do run intermittent some times! and not trip the eng light on !!!!this would be a great place to start.Hope this helps

Dec 26, 2008 | 2001 Buick LeSabre

1 Answer

1997 Buick LeSabre


Hi! If it seems to be much worse in the rain, why don't you have a mechanic test your engine for codes and functions after he rinses your engine down with water? Water won't hurt your engine. Good luck! Jack

Aug 07, 2008 | 2000 Buick LeSabre

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