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1995 GMC Jimmy misses, unfixable codes, not drivable

Tiny
MEDIC940
  • MEMBER
  • 1995 GMC JIMMY
  • 6 CYL
  • 4WD
  • MANUAL
  • 200,000 MILES
At my wits end. Has a cam position sensor code, all wires intact with correct voltages. New coil, wires, plugs, cap and button. Fuel system new with correct pressure. Part of the time starts good still misses with no power, part of the time trys to start and doesn't. Has a p1351 code with no injector pulse or fire. Can clear vcm starts right up still misses with no power, also has new coil. And new cam position sensor. Can anybody please help me.
Thanks
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Thursday, December 13th, 2007 AT 7:01 PM

1 Reply

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
A p1351 code is a: ignition control circuit high voltage code. This could be several things. First check the voltage of the battery when the engine is running. If it's over 14 volts then the problem is most likely the voltage regulator. The voltage regulator is built in to your alternator so it's best to have your alternator tested for proper function.
Secondly; it could be your ignition control module. Take it out and have it tested. Autozone or a place like that will test your alternator and your ignition module for free. Let me know how you make out.
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Thursday, December 13th, 2007 AT 8:31 PM

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