What do I need?
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FTE Leadership Emeritus
Joined: Sep 2003
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From: Houston, Texas
What do I need?
After I started my X to leave work yesterday, the check engine light came on with codes p0672, 4, 6, and 8 suggesting that a whole bank of glow plugs failed on me. I did a search and found a couple of things, but i'm not sure which approach to take first. From what I read it could be any of the following:
1. A bad GPR
2. Bad GPCM
3. The UVC harness
The question here is what do I really need? (a gpr, gpcm, etc) I'm starting to think it's my GPR because I do remember seeing some corrosion on it, but cleaned it off and never worried about it again. Is there a way to test my GPR and/or figure out whether I need to pull the valvecovers? (i.e process of elimination)
1. A bad GPR
2. Bad GPCM
3. The UVC harness
The question here is what do I really need? (a gpr, gpcm, etc) I'm starting to think it's my GPR because I do remember seeing some corrosion on it, but cleaned it off and never worried about it again. Is there a way to test my GPR and/or figure out whether I need to pull the valvecovers? (i.e process of elimination)
Post Fiend
Joined: Jun 2006
Posts: 5,497
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From: Central, Al
being an X it should have a gpcm. with a whole bank triggering i would not think all 4 plugs died at once but either that bank on the gpcm died or the harness for that side came unplugged at the gpcm.
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FTE Leadership Emeritus
Joined: Sep 2003
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From: Houston, Texas
Originally Posted by tucker1999
The wiring harness to the glow plug circuits have two replaceable fusible links, one for each side, Might be a place to start.
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That I am not sure of right now. I came across this possible solution when I was looking through the manual. I am looking for the wiring diagram. As soon as I find it I will let you know. These came with quite a few of the fusible links scattered thought out the wiring harness.
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FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,253
Likes: 763
From: Houston, Texas
Originally Posted by tucker1999
That I am not sure of right now. I came across this possible solution when I was looking through the manual. I am looking for the wiring diagram. As soon as I find it I will let you know. These came with quite a few of the fusible links scattered thought out the wiring harness.
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Joined: Jan 2008
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All I can find out is ,out of the manual, "The wiring harness to the glow plugs circuit incorporates two replaceable fusible links, one for each glow plug bank" The wiring diagrams that I have got show no reference to these. They show the connectors but nothing else. Closest I could come was in the PIA harness. Wish I could be of more help.
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