1991 Buicl Lesabre?

Question

i have a 1991 buick lesabre thay shuts off intermittently while driving, for aprox 1 second and continues to run as tho nothing happened. I am having a hard time getting it repaired because the techs say if it doesnt register in the computer then they cant do anything about it. anyone with some suggestions...THANKS...Tony

Answer 1

If your little car dies, intermittently, and only for 1 - 2 seconds and returns to normal, there is a good chance that the PCM won't "see" the failure. But it still worth a look.
Go here------>

http://autorepair.about.com/library/ts/obd-i/bl-dtcs-92.htm

...for a discussion of the procedure for retrieving the diagnostic codes. Scroll down below the descriptions for a step-by-step description. It is easy, and only requires a paperclip.
If there are codes in the memory, record them and refer to the DTC table for a definition of the circuit or system fault.
Even if there is nothing showing now (The "Check Engine" light), if there has been a failure, and the PCM saw it, it will be recorded until the battery is disconnected or goes dead.
If you have the ability to repair it, then refer to the repair manual for the proper diagnostics and subsequent repairs required.
If you can't do it yourself, at least you will bee able to communicate intelligently with the shop where yo take it, and MIGHT save yourself some money by narrowing the focus of diagnostics.
Based on experience, there are three areas to look at"
1) If equipped with a MAF instead of a MAP, there may be an intermittent failure in the circuitry of the sensor.
2) The Cam /Crank sensor is a known weak component here, but as a rule, doesn't behave intermittently. But it isn't' unknown to be off and on either.
3) The ignition module may well be heating up and beginning to fail.
It is also possible that there is a failure in the circuit from the ignition switch to the PCM that has a poor connection, perhaps a worn ignition portion of the ignition switch.

Good Luck and Merry Christmas

Answer 2

some ideas- electrical problems with the- fuel rail/ injectors, coil,fuel pump, accident sensor switch, computer grounding, a short in the main electrical lines that would drop the voltage too low to operate. check connections for corrision/ looseness on the items i just listed. interminent problems are a bi*ch but they usually either go away or finally become permanent so you can find them.

Answer 3

It sounds like you have a loose wire, but that could be anywhere. It will take a good mechanic using the slowest method - trial and error to locate the problem.

Answer 4

Steal the exact same model of your car on the street and put your license plate over the exact same model and destroy the old model. Then you should be okay.

Answer 5

wife had a97 saturn did same ...it was bad ignition switch..could also b coil