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No start; GP + GPC issue?
According to my research this is correct. Even if you read the wiring schematic the GP's get 12v from the relay, not the controller. The controller just determines when to turn on the relay. I've read the manual relay bypass upgrade threads on here so I know not to let them run longer than 8...- School_Bus
- Post #21
- Forum: 6.9L IH & 7.3L IDI Diesels
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No start; GP + GPC issue?
Ok, here is an update. I checked the BRAND NEW MOTOCRAFT ZD-1-A glow plugs i installed two weeks ago and they are all dead now! They fail the check light method and the resistance test with a multimeter. To refresh, i checked all 8 of them three weeks ago and 6 checked out dead. So i...- School_Bus
- Post #11
- Forum: 6.9L IH & 7.3L IDI Diesels
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No start; GP + GPC issue?
I will check this afternoon. I know that the ones i replaced were replaced with the correct Motorcraft GP's. Uknown what was i nthere, i guess il lreplace the other two GP's this weekend.- School_Bus
- Post #8
- Forum: 6.9L IH & 7.3L IDI Diesels
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No start; GP + GPC issue?
This truck did not come with a block heater.- School_Bus
- Post #7
- Forum: 6.9L IH & 7.3L IDI Diesels
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No start; GP + GPC issue?
I have my water separator replaced by the AG mod kit that puts the NAPA gold filter on instead.- School_Bus
- Post #4
- Forum: 6.9L IH & 7.3L IDI Diesels
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No start; GP + GPC issue?
This is my first post, but ive been reading as much as i can for my issues before posting. 1986 Ford 6.9 IDI Ive owned it for about 3 months now. The first two months the thing drove fine. Then a hard start issue creeped up, then it became a no start. First thing i checked was the...- School_Bus
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- Replies: 28
- Forum: 6.9L IH & 7.3L IDI Diesels
