Cold start issues
Mountain Pass
Joined: Aug 2018
Posts: 188
Likes: 8
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Do you have a multimeter? Put in on one battery turn the key to run NOT start, watch the current drop to 11-12Volts. That’s the GP’s energized, they will stay that way for upwards of 1.5-2 minutes. The voltage should jump back up to 13+ volts when the GPR shuts the GP’s off.
Next time you start the truck, leave the key on for 90 seconds before starting the truck. See if that helps. I would suggest also reading your manual it will walk you through this process. As I mentioned earlier, you can wire a LED to the energized side of the GPR and install in the cab, then you’ll realize just how long the GP’s stay energized.
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Junior User
Joined: Jun 2016
Posts: 59
Likes: 0
Do you have a multimeter? Put in on one battery turn the key to run NOT start, watch the current drop to 11-12Volts. That’s the GP’s energized, they will stay that way for upwards of 1.5-2 minutes. The voltage should jump back up to 13+ volts when the GPR shuts the GP’s off.
Next time you start the truck, leave the key on for 90 seconds before starting the truck. See if that helps. I would suggest also reading your manual it will walk you through this process. As I mentioned earlier, you can wire a LED to the energized side of the GPR and install in the cab, then you’ll realize just how long the GP’s stay energized.
Thanks
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Junior User
Joined: Jun 2016
Posts: 59
Likes: 0
That's a good price.,Do glow plugs where out with 200,000 miles? What I'm wondering is should I just replace them all and hope that fixes it.? Do you have a link for the valve cover gasket with the wiring?
Thank you
Mountain Pass
Joined: Aug 2018
Posts: 188
Likes: 8
check rockauto for part numbers, use motorcraft
Mountain Pass
Joined: Aug 2018
Posts: 188
Likes: 8
also, both batteries are 12.5 volts? load tested good ?
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Junior User
Joined: Jun 2016
Posts: 59
Likes: 0
Thanks I just ordered a set of these. Now I'll look for valve cover gaskets with wiring. Anything else I'm going to need to order?
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Logistics Pro
Joined: May 2017
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From: Muskogee, Ok
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Junior User
Joined: Jun 2016
Posts: 59
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Junior User
Joined: Jun 2016
Posts: 59
Likes: 0
Test your glow plug relay, and set out two quarters, other than that you should be good till the install
Here's My thread with torque values for the job and other info while you are under the valve covers for your glow plugs
Here's My thread with torque values for the job and other info while you are under the valve covers for your glow plugs
Logistics Pro
Joined: May 2017
Posts: 4,667
Likes: 1,455
From: Muskogee, Ok
Look into the 50 cent mod. You take a quarter, grind it down to the top of his head, and shove the quarter into the UVCH harness clip to keep it from coming unclipped and dropping that bank of injectors.
Just one of those things that is so simple and easy to do after you've already tore everything down to do other work that you do extra preventative stuff as well. Like checking torque on rocker arms, lower injector bolts, and glow plugs any time you are already under the valve covers.
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Junior User
Joined: Jun 2016
Posts: 59
Likes: 0
Look into the 50 cent mod. You take a quarter, grind it down to the top of his head, and shove the quarter into the UVCH harness clip to keep it from coming unclipped and dropping that bank of injectors.
Just one of those things that is so simple and easy to do after you've already tore everything down to do other work that you do extra preventative stuff as well. Like checking torque on rocker arms, lower injector bolts, and glow plugs any time you are already under the valve covers.
Logistics Pro
Joined: May 2017
Posts: 4,667
Likes: 1,455
From: Muskogee, Ok
Gaskets are reuseable, if your truck runs good without stumbling from dropping injectors from a bad one leave em be.
If, Big IF, yours are bad, updated Motorcraft version. Doormans are cheaper but i hear the plug spacing is different and requires using their wiring plugs, and that they use aluminum instead of copper for the wiring.
If, Big IF, yours are bad, updated Motorcraft version. Doormans are cheaper but i hear the plug spacing is different and requires using their wiring plugs, and that they use aluminum instead of copper for the wiring.
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Junior User
Joined: Jun 2016
Posts: 59
Likes: 0
Gaskets are reuseable, if your truck runs good without stumbling from dropping injectors from a bad one leave em be.
If, Big IF, yours are bad, updated Motorcraft version. Doormans are cheaper but i hear the plug spacing is different and requires using their wiring plugs, and that they use aluminum instead of copper for the wiring.
If, Big IF, yours are bad, updated Motorcraft version. Doormans are cheaper but i hear the plug spacing is different and requires using their wiring plugs, and that they use aluminum instead of copper for the wiring.
Thanks