97 Cali GPR
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97 Cali GPR
So as most of you know i have a 97 California truck and ever since i have owned the truck it has had a p1391/p1393 code. Which is descibed as low amperage to left and right bank glow plugs.
The Cali trucks have a shunt that has a set resistance—anything less, and the PCM knows something is wrong and triggers the CEL. I thought it was the relay so i replaced it with a stancor a while ago, i was talking with a friend and he thought i had it wired wrong so i rewired it so i wired it how he thought would work and it melted the shunt...
So my question is, besides the GPs them selves being bad, what could cause this light to stay on? And what is the PROPER wiring for the GPR with a shunt? I have found nothing with the detail im searching for.
PS: where can i buy a new shunt?
The Cali trucks have a shunt that has a set resistance—anything less, and the PCM knows something is wrong and triggers the CEL. I thought it was the relay so i replaced it with a stancor a while ago, i was talking with a friend and he thought i had it wired wrong so i rewired it so i wired it how he thought would work and it melted the shunt...
So my question is, besides the GPs them selves being bad, what could cause this light to stay on? And what is the PROPER wiring for the GPR with a shunt? I have found nothing with the detail im searching for.
PS: where can i buy a new shunt?
Hotshot
Joined: Dec 2005
Posts: 14,375
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From: evansville in
So as most of you know i have a 97 California truck and ever since i have owned the truck it has had a p1391/p1393 code. Which is descibed as low amperage to left and right bank glow plugs.
The Cali trucks have a shunt that has a set resistance—anything less, and the PCM knows something is wrong and triggers the CEL. I thought it was the relay so i replaced it with a stancor a while ago, i was talking with a friend and he thought i had it wired wrong so i rewired it so i wired it how he thought would work and it melted the shunt...
So my question is, besides the GPs them selves being bad, what could cause this light to stay on? And what is the PROPER wiring for the GPR with a shunt? I have found nothing with the detail im searching for.
PS: where can i buy a new shunt?
The Cali trucks have a shunt that has a set resistance—anything less, and the PCM knows something is wrong and triggers the CEL. I thought it was the relay so i replaced it with a stancor a while ago, i was talking with a friend and he thought i had it wired wrong so i rewired it so i wired it how he thought would work and it melted the shunt...
So my question is, besides the GPs them selves being bad, what could cause this light to stay on? And what is the PROPER wiring for the GPR with a shunt? I have found nothing with the detail im searching for.
PS: where can i buy a new shunt?
Heard from rob lately?
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Joined: Sep 2007
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From: Medford Oregon
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Yeah i here from Rob a lot. We live 5 miles from eachother lol. After all he put into bigblue he wants to sell her for a newer truck thats a little more rleiable. But he picked up a 71 reg cab Short bed F100 2wd on 77 suspension and a E99 7.3 and a zf5, and man that thing is a blast to drive.
Hotshot
Joined: Dec 2005
Posts: 14,375
Likes: 604
From: evansville in
Yeah i here from Rob a lot. We live 5 miles from eachother lol. After all he put into bigblue he wants to sell her for a newer truck thats a little more rleiable. But he picked up a 71 reg cab Short bed F100 2wd on 77 suspension and a E99 7.3 and a zf5, and man that thing is a blast to drive.
Yea the 71 is pretty cool!!
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Laughing Gas
Joined: May 2012
Posts: 855
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From: Central Oregon
I have a cali truck as well. Your best bet from what I have read is too buy another shunt from ford and bend it to form the stancor relay.
This is the reason I stayed with the OEM GPR.
This is the reason I stayed with the OEM GPR.
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From: Madison, WI
I've seen pics of the shunt on the Stancor relay, not having been bent. I think it's just mounted upside down compared to how it's mounted on the OEM relay.
Gotta wonder how it would fit on a Western Plow 56131K.....
Gotta wonder how it would fit on a Western Plow 56131K.....
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