Question about 1994 Buick LeSabre

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1994 buick lesaber car runs till it gets hot then it stalls and wont start till it cools down any ideas whould be helpful thank you

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I don't know this car but if I was you I would start with the ignition system. First getting extra spark plug or tests light. When the car is running good, pull the coil or spark plug wire off and test for spark. By puting the sparkplug or tests light in the sparkplug lead. Then when the problem happens tested again to see if you have sparked. also pouring a little fuel down the intake system. If the car starts you have a fuel problem. If it does not start, you may have a bad ignition module are or coil. Good luck.

Posted on Jun 04, 2010

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Posted on Jan 02, 2017

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Hi and welcome to FixYa!

As a first course of action, I strongly suggest that you replace the ignition coil. If the ignition coil gets hot the car may stall or may not start right away till it cools down. The ignition coil is surely faulty and replacement is surely necessary.

Hope this helps and thank you for using FixYa! Have a good one!

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I have the same exact problem, once the 2002 Buick rendezvous gets hot it won't start till it cools down. Forget about any diagnostic codes, Buick dealer told me there is nothing he can find. The fan...


Hi usually the symptoms your having are a result of the oxygen sensor(or lambda sensor for its technical name) being at fault.

now the reason it points to this being at fault is that it only starts working when the engine is near normal temp then if the car wont start till its cooled down then this is because the sensor then stops working when its cooled down so your car will run again until it gets hot,

you need to check where the sensor is located in the exhaust if it comes before the catalytic converter then the chances are its the sensor at fault but if it comes after the cat then it could be the cat that is at fault.

my best guess would be the sensor as your car is playing up exactly as if this sensor was not working.

i hope this is some help to you

let me know if you need further assistance ok

plz rate this solution as i have a whole page of unrated posts, thanks

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I have a 1994 buick lesaber limited my fan won't turn off


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1 Answer

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Its the distributor module. The module in the dist. that tells the plugs to fire. When it gets hot it shuts down till it gets cool again. Had that same problem on several cars.

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