Question about 1997 Buick LeSabre

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97 buick lesabre problems

97 LeSabre won't start,starter is fine, battery good,replaced crank position sensor, can short the starter out and it will run about 60 seconds.

Posted by M Jay on

  • David Quick
    David Quick Feb 16, 2019

    If I'm not mistaken that's a chip key car there are 15 maybe 16 codes their resistance value can't be duplicated with some older single individual resistors placed between the wire which will turn off the security or you could also try would has work for me smack the steering wheel with the ball of your fist like you're mad and turn the key and hold the key in the start position at the same time when they make contact it will start I know this is an old post but that really worked for

  • David Quick
    David Quick Feb 16, 2019

    It should say codes can be duplicated of their resistance value to fool security system



2 Answers

Jeff Armer

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Did you do or have a Crank sensor Variation Learn Procedure ?
The crankshaft position system variation compensating values are stored in the PCM non-volatile memory after a learn procedure has been performed. If the actual crankshaft position system variation is not within the crankshaft position system variation compensating values stored in the PCM, DTC P0300 may set (refer to Diagnostic Aids for DTC P0300).
The Crankshaft Position System Variation Learn Procedure should be performed if any of the following conditions are true:
DTC P1336 is set.

The PCM has been replaced.

The engine has been replaced.

The crankshaft has been replaced.

The crankshaft harmonic balancer has been replaced.

The crankshaft position sensor has been replaced.

Need to have a capable scan tool to do this !

Posted on Dec 21, 2014


Richard McKeehan

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Will it only crank with the starter shorted, and not with the key?

Posted on Jul 06, 2014

  • 1 more comment 
  • M Jay
    M Jay Jul 06, 2014

    not with the key, no. I was thinking it might be the neutral safety switch , however I don't know where it is located on this vehicle

  • M Jay
    M Jay Jul 06, 2014

    I have started it a couple of times by shorting out the starter but it only runs for about 60 seconds. My battery is ok. I pulled the stareter and had it tested and I pulled the crank position sensor and replaced it. I have no power to the solenoid wire when the key is in start position, (purple wire).

  • Richard McKeehan
    Richard McKeehan Jul 06, 2014

    the neutral safety switch is located on top of the tranny. the shifting cable attaches to the selector arm. its possible left that the shift linkage is out of adjustment.



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- Crankshaft position sensor harness is open or shorted
- Crankshaft position sensor circuit poor electrical connection
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- Signal plate may be damage
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