Question about 1991 Chevrolet S-10 Blazer

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Help have no spark

My baby has no spark have changed plugs, wires, coil,2 peices under distributor and yet still no spark. what could be wrong. Please help lost without my wheels.

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  • leighberry19 Aug 02, 2008

    i can not find that piece my oil filter is on my drivers side wall but i do not see no switch

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I had the same problem with 1991 s10 blazer.
check the oil pump pressure switch and current to the switch.
The computer will not allow the spark plugs to fire if the oil pressure switch is not sending a signal to the computer that the oil is flowing.
My problem was a short in the wiring that was not sending enough current to the oil pressure switch.
I had to crank the starter three or four times at 5 second intervals until the current was suffient to operate the oil pressure switch.
The switch is a round cylinder device located on th drives side of the engine near the oil filter.
Good luck!!

Posted on Jul 31, 2008

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