Question about 1998 Chevrolet C3500

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Fuel pump sometimes when i turn the key over to run but not crank the lights on dash wont come on and fuel pump dont wind and truck will just turn over but not start up then sometimes i turn key and lights come on the dash and pump winds and the truck will start and run fine what is causing this

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  • 8 Answers

That sounds like a short in either your colum. or it might be your starter relay.

Posted on Jul 29, 2013

  • donny Jul 31, 2013

    Thank u and when I got down to the switch wires there was one that had rubbed and was shorting out on column, repaired wire and now works great thanks again

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try bypassing the oil pressure switch on the back of the block behind the distributor, if there oil pressure switch goes bad it will do this. had one that drove me nuts trying to fix it then figured out I had to buy a book and low and behold thee it was 3 wire oil pressure switch you can't see between the engine and fire wall just behind the distributor and costs 8 bucks to buy new.

Posted on Jan 16, 2010

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