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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-04-2007, 07:45 PM   #1
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Default Shift Lock Problems

I have a question about the shift lock on my 1991 Bonneville SSE. It has been sticking quite a bit, what I mean is that the button will stick and now come out unless forced. I did spray some lube but it still does the same..

My question is once I shift into park and shut the car off, I go to start the car up again and it will not start. I shift into D then back to P and it will start.. All the time when I try to start the car it will stall and then finally start up seeming like the battery is to low to crack the starter.. I installed a used fully charged battery today and it still does the same thing. I did a test on the battery I removed and it passed.. I did a test on the battery, starter & alternator and they all passed.. Does anyone know is it because the shift lock is always sticking makes my car have problems starting..? Can anyone help me out here!

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Old 07-04-2007, 10:48 PM   #2
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Sounds like the Park Neutral Safety Switch...

Power to the starter solenoid is routed through the park neutral safety switch... In Park or Neutral there should be a 12v+ supplied to the Solenoid when you hold down the ignition switch... If there is power going to the switch when you hold the key down( start position ) but none going to the starter solenoid, then you may have found the issue... I forget what the wire colors should be tho..

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Old 07-04-2007, 11:00 PM   #3
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Thanks for the info.. Could I disconnect the switch? Is there any way to get around this so that I can start the car with nor problems?
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