Join Date: Sep 1999
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Re: Need help w/ 91 S-10 Blazer
<font face="Comic Sans MS">Do all the accessories get power when the ignition is in the "ON" position, even if the vehicle will not crank? If yes, then you'll want to try making a jumper that will bypass the Park/Neutral safety switch, which typically exists at the base of the steering column.
If, after you have bypassed the P/N switch, the engine starts, you should replace said switch, because it's good to have.
That is about the only thing I can think of that would cause it to work only on occasion... If it were most other stuff, it'd either work or it wouldn't work at all... For the most part... Can't hurt surely, easy to check...</font>