2007 WK CRD - Code U0106 Lost Communication with Glow Plug Module - Page 2 - JeepForum.com

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post #16 of 33 Old 11-29-2012, 04:53 AM
johnniebravo
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I did have my module go bad, it went before any of my glow plugs went. Replaced the module, all was ok for several months. Then i lost glow plugs 2,4, and 6. Replaced those and then also the battery and since everything is fine. Haven't lost anymore plugs. I have a suspicion the old battery, despite seeming ok, was contributing to the death of things. Can't prove that, but others have also suspected a correlation between old battery and failing glow plug system components.


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post #17 of 33 Old 11-29-2012, 07:40 AM
jaje
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I had to replace the battery as it was struggling to do a cold start and I had a bunch of weird electrical problems in the car (windows auto up wouldn't work right). After replacing it everything back to normal.

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post #18 of 33 Old 01-31-2013, 11:02 AM
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I am getting the P0670 code. I just installed a new gear shift module yesterday, which had deteriorated to the point that it was a hazard. Simultaneously, cold starts had been getting really dicey, almost draining the battery before getting the engine to start (morning temp ~15F), spluttering on a couple cylinders for 10 seconds or so before the others caught. When the new gear shift module was installed the tech cleared all the codes (without writing them down). It shifted fine last night on my way home and no CEL so I was hoping the starting issue might be related for some reason. Last night was pretty cold, and unsure whether the starting issue would manifest again, I plugged in the block heater for the night. It started great this morning but the CEL came on and the shop read the P0670 code.

My question is this: Could the shifter control unit create enough electrical havoc to maybe affect the glow plug control module or glow plugs? If so, I'll risk not plugging in the block heater tonight and see how it starts tomorrow. If there no way these two systems could be impacting each other, then I'll start along the path of 1. checking glow plug control module ground connection 2. test/replace glow plugs, 3. replace glow plug control module?

Thanks for any advice anyone can give. Nick
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post #19 of 33 Old 02-04-2013, 05:52 PM
johnniebravo
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nicksut, I don't think the two problems are related. I would just change out the gpcm with the newer part number. Should fix it, but for the sake of being prepared, i would pick up two glow plugs and keep em on the shelf.

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post #20 of 33 Old 02-04-2013, 11:25 PM
nicksut
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Johnniebravo, Thanks for your response. That's was my suspicion, and after a few days I'm still having a tough time in the mornings. I think you bought the part at the Sprinter store and I wanted to just double check I'm getting the right thing. Is this what it looks like I need? I'm a little out of my depth with this stuff, but doing my best to avoid the stealership and retain some self-esteem. Thanks!
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post #21 of 33 Old 02-06-2013, 02:36 PM
johnniebravo
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I am on my phone so its hard to read the diagram, please search my username and there is a thread on the gpcm. Someone posted the site they ordered from for around $140. I think its the site you posted.

Btw, its all easy to do, just read up here first on how to. Allow plenty of time to figure the little things out. Good luck.

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post #22 of 33 Old 06-13-2013, 06:09 PM
TurboDiesel
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gonna bump this

whats the part number for the new GPCM?

mines having a problem starting
had a soft code p1648 which could be a number of things including glow plug module

also any link on how to change it??

thanks

2008 CRD // GDE Eco // DPF delete // 3" intercooler // OME HD // 265 dirtytracs etc.
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post #23 of 33 Old 06-13-2013, 07:32 PM
BAH101
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I believe the module is left center front (looking from the rad) of the engine. From what I remember reading, its a couple of bolts and a plug.

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post #24 of 33 Old 06-13-2013, 08:28 PM
TurboDiesel
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yea changing seems to be crazy easy

is there a glow plug relay somewhere? didnt see anything on WKjeeps.com

2008 CRD // GDE Eco // DPF delete // 3" intercooler // OME HD // 265 dirtytracs etc.
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post #25 of 33 Old 06-14-2013, 10:12 AM
suzieque
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Quote:
Originally Posted by TurboDiesel View Post
yea changing seems to be crazy easy

is there a glow plug relay somewhere? didnt see anything on WKjeeps.com
yeah, the picture I posted does not show a glow plug relay, just a glow plug module.

http://www.jeepforum.com/forum/attac...s-location.jpg

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post #26 of 33 Old 06-14-2013, 11:25 AM
LJS8510
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Are you looking for a video of changing glow plug module?

https://www.youtube.com/watch?v=6lTHsyjuquE


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post #27 of 33 Old 06-14-2013, 05:43 PM
TurboDiesel
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yea i keep hearing people say glow plug relay but i cant find a damn thing

im gonna see if i can get a new module and change it out tomorrow

atleast its crazy easy to do
ill also pick up some glow plugs aswell. just incase

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post #28 of 33 Old 08-01-2013, 08:39 PM
multihulls
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I've had an issue with my#2 GP. The scanned was done via my Green Diesel programmer - P0672. I have replaced the GP and still have the problem. I have removed GP #1 & #2 and then hot wired them so I can see them glow up when removed. GP #1 works and #2 doesn't. I then swapped the GP's and #2 still doesn't work. I've check the brass connector and wire for a break or damage but none to be seen.
Does anyone have a idea what the problem is?
Also where do i find the GP control module, maybe this could be the issue with a faulty connection for #2 wire.
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post #29 of 33 Old 08-02-2013, 01:12 AM
multihulls
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I've found a YouTube on it.
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post #30 of 33 Old 08-02-2013, 01:49 AM
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I just ran a resistance test with a multimeter from the glow plug brass connector back to the plug at the Module and it's perfect. There's no resistance so the mauve/black wire is OK so where's the problem? I'm pretty sure I know the answer that I may need to change my GP module just to get the #2 to glow but does anyone know if there's anything else I should check or do before I going spending dollars.
Is there a master reboot?
Should I hit it with a hammer or if that doesn't work maybe use a bigger hammer?
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