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Power Strokes
94-97 Tech
Won’t start (sometimes)
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[QUOTE="6.0 Tech, post: 1505722, member: 23001"] I use a test light to check both things mentioned. Use a hi impedance one, like one with a glass fuse for a bulb in it, not an led one. For the gpr put test light alligator clamp on ground and tip to the gpr, should light up bright. For the glow pligs, test loght alligator clamp on positive, tip to uvch. Should light up bright, if its dim or doesnt light up, failed glow plug or harness. I like the test light method, as it loads the circuit. You can ohm out good with only 1 or 2 strands in a wire due to how the ohm test is done, a load test will show that as hi resistance. But it does sound like youve got a uvch problem, or multiple glow plug issues. May be a good idea to change it all for piece of mind. [/QUOTE]
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