1994 Buick LeSabre 6 cyc will not start after running fine
All of the sudden, without warning, it won't start. Sometimes it will start right before or after the tow truck shows up. One time, a mechanic put in a used anti theft module. I had to get new keys. I finally decided to just leave a key in the ignition all the time. My thinking was that it would reduce the chances of the car sensing the "wrong" key and shutting off the fuel system. That worked great until I bought a new battery. It is like the car lost its memory. I am sitting here stranded at work.
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Re: 1994 Buick LeSabre 6 cyc will not start after running...
Disconnecting the battery (to replace it) has obviously reset something in the computer. I would suggest you call the service dept of a Buick Dealer and ask them how you can reset the computer. They are usually pretty helpful in a case like this
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If the motor gets hot and cuts off and will not start for a period of time the problem would be the crank sensor. The sudden cut off and starting right back up can be due to dirty battery cable connections. Remove them from battery and clean all three of them with a wire brush and replace both bolts.
Does this have a "Check Engine" or "Service Engine Soon" light on? If so, get the codes pulled and post them back here along with the engine info. If no codes are present then it may well be a bad crankshaft sensor. I have seen many of these give intermittent problems (usually heat related) and do exactly what you have described without setting a code.
1994 Buick Lesabre Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Orange
Car Radio Ignition Switched 12V+ Wire: Yellow
Car Radio Ground Wire: Black
Stereo Radio Illumination Wire: Gray
Stereo Radio Dimmer Wire: Brown
Stereo Radio Antenna Trigger Wire: N/A
Stereo Radio Amplifier Trigger Wire: N/A
Front Speakers Size: 4′ x 6′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green
Rear Speakers Size: 6′ x 9′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue
Run a self test on the computer for any trouble codes that might be stored that will lead us to the problem, Kragen auto and others will do this for free. get back to me on this thread with those codes.