You are going to have to do some testing the next time it isn't working to find where the problem is.
Things it could be
park/neutral safety switch
i suggest we start with testing the solenoid.
While the engine is cool. Find your starter and notice the solenoid on it.
There will be the big battery cable going to it, and Then a smaller wire that energizes the solenoid.
Use a test light and probe that small wire,
have someone crank the engine over and you'll see the light come on.
Now you know where everything is and what the test light should do when everything is working.
We need to know if the test light comes on when the engine doesn't turn over.
Monday, January 12th, 2009 AT 3:02 PM