Should the tac go up when engine is cranking but not started? I just barely nuges. I was told this could indicate wheather the crank positioning sensor is working>

Asked by GuruXSWN5 Oct 26, 2018 at 03:58 PM about the 1998 GMC Suburban K1500 4WD

Question type: Maintenance & Repair

Engine will run ok for a while and will then stall, surge and stall. Then will not
start. may not start, not consistant have new fuel pump, fuel filter and fuel relay
which made no change. There is some fuel pressure, squirts out 2 inches
when I open shrader valve.

65,850

firebird338 answered 6 years ago

Fuel pressure regulator

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Should the tac go up when engine is cranking but not started? I just barely nuges. I was told this could indicate wheather the crank positioning sensor is working>

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Should the tac go up when engine is cranking but not started? I just barely nuges. I was told this could indicate wheather the crank positioning sensor is working>

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