98 GMC Sierra 5.7 tbi Will start with plug wires 1 & 3 unplugged and laying on the manifold


Asked by Sep 04, 2016 at 10:16 PM about the 1998 GMC Sierra 1500 C1500 SLE Extended Cab LB

Question type: Maintenance & Repair

98 GMC Sierra 5.7 tbi .. I was driving down the road and the engine just stopped there were no previous problems with the truck running. The truck will start with plug wires1 and 3 unplugged and laying on the manifold but it will not start with the wires plugged in. We replaced the crank sensor but it still will not start unless the plug wires are on the manifold. We have no clue as to what is going on or what we need to try next. Anyone have any idea?

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