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glow plug problems

Discussion in '1982-Present GM Diesel' started by LA90k5, Nov 26, 2006.

  1. LA90k5

    LA90k5 Registered Member

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    I need some help. I changed my starter Friday. After hooking the batteries back up, I started the engine and it started fine. Saturday, I went to finish putting the cover back on the torque converter. After I picked everything up, I tried to start the truck, but the glow plug light didn't come on. I didn't even hear the relay click. I checked the connections on the controller and on the batteries and they were fine. My meter isn't working, so I am limited on troubleshooting right now. I changed the glow plug controller today, and I still have no glow plugs. The starter turns the engine fine, the glow plugs just aren't working. I changed the glow plugs and controller last December. This vehicle is a 90 k5. Also, I checked the fuses and they appeared fine. Any help solving this problem would be greatly appreciated. Thanks, Scott
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Sounds like it could be a bad glow plug relay. It looks like a Ford starter solenoid...

    Rene
     
  3. stallion85

    stallion85 1/2 ton status

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    Don't know if you fixed this yet or not, but I had the same issue. Try using a jumper wire on the solenoid. One end of the wire on both the input and output. Hold it for about 8 seconds (wire should get hot) then try to start. If this works then the solenoid is good. This was the case with my truck. There was a 12V relay going to the solenoid that ended up being bad. Changed this out and all is well now.......
     
  4. LA90k5

    LA90k5 Registered Member

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    Yes, I did get it fixed. I don't remember exactly what I did, but it wasn't much. I think I had a bad connection or something. The last relay I put in never worked well, but this one is doing fine. Thanks for the reply.
     

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