05 engine runs no throttle (sometimes) also misses some times - Page 11 - Ford Powerstroke Diesel Forum
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post #101 of 138 Old 08-19-2019, 06:01 AM
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09/22/03 is the early/ late split
The 4C3Z-AA is with fuel heater (3 connectors on frame pump)
The 4C3Z-CA is without fuel heater (only 2 connectors on frame pump)
The 4C3Z-9D930-AA is the correct injector harness for trucks built after 12/01/03

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2004 F250 CCSB 4X4
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35x12.5x18 Nitto Ridge Grapplers on Method MR309 wheels
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post #102 of 138 Old 08-19-2019, 06:19 AM
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There is a GPCM orientation change in 04 AFTER the 9-22-03 ICP (high pressure oil rail) changes:

Look at your ICP sensor on the passenger side valve cover. Pay attention to how the GPCM is bolted up to the bracket that secures to the valve cover. If you happen to have it secured in a manner similar to a 2003 engine (HORIZONTAL ORIENTATION), you have a mid/late build 2004 engine. As such, your engine uses engine harness Ford part number 4C3Z-12B637-AA (Navistar ID# 1844262C93), to be used with glow plug harnesses part numbers 4C3Z-12A690-AA (Navistar ID# 1845915C9) right side, and 4C3Z-12A690-BA (Navistar ID# 1845793C9) left side.

If you have your GPCM mounted on the bracket, identically to the way it is on 2005 and later engines (VERTICAL ORIENTATION), you have a late/late build 2004 engine. As such, your engine use engine harness Ford part number 4C3Z-12B637-CA (Navistar ID# 1846377C92), and glow plug harness Ford part numbers 4C2Z-12A690-AB (Navistar ID# 1845794 C9) right side, and 4C2Z-12A690-BA (Navistar ID# 1845695 C9). Notice, the right side glow plug harness part number is also identical to that, that is used on '05 and later engines.
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post #103 of 138 Old 08-19-2019, 07:10 AM Thread Starter
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Quote:
Originally Posted by G8orFord View Post
You really need the build "day". I believe 09/23/04 was the split date, but if your ICP is on the valve cover it's a late '04. If it's in the back it's an early '04.
Is the ICP location the only thing that matters? It's 100% on the valve cover and the EHB is on the bracket on the thermostat.. If it comes down to needing the "day" I might be in trouble because it appears the "day" was actually 9/23/04..


I attached a picture of the door tag with the VIN , but also a picture of a sticker on the inner fender says "wire harness build date 09/23/04" I dunno what harness though, is it all of it, the cab, the engine? I dunno
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Last edited by DAV!D; 08-19-2019 at 07:13 AM.
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post #104 of 138 Old 08-19-2019, 07:15 AM Thread Starter
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Quote:
Originally Posted by voodooridr View Post
09/22/03 is the early/ late split
The 4C3Z-AA is with fuel heater (3 connectors on frame pump)
The 4C3Z-CA is without fuel heater (only 2 connectors on frame pump)
The 4C3Z-9D930-AA is the correct injector harness for trucks built after 12/01/03

Sent from my SM-G960U using Tapatalk
ok so it's the fuel pump connector is the only difference?
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post #105 of 138 Old 08-19-2019, 07:16 AM
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The change was 09/22/03 so you're 366 days after the change

Sent from my SM-G960U using Tapatalk

2004 F250 CCSB 4X4
4" Skyjacker lift
3:73 gears
35x12.5x18 Nitto Ridge Grapplers on Method MR309 wheels
KDD heads, ARP studs, BD exhaust manifolds, DieselSite up pipes, Mishimoto degas bottle
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post #106 of 138 Old 08-19-2019, 07:16 AM
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Quote:
Originally Posted by DAV!D View Post
ok so it's the fuel pump connector is the only difference?
That should be it

Sent from my SM-G960U using Tapatalk

2004 F250 CCSB 4X4
4" Skyjacker lift
3:73 gears
35x12.5x18 Nitto Ridge Grapplers on Method MR309 wheels
KDD heads, ARP studs, BD exhaust manifolds, DieselSite up pipes, Mishimoto degas bottle
PHP Insight PRO
PHP Atlas 40 FICM tune
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post #107 of 138 Old 08-19-2019, 07:20 AM Thread Starter
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Quote:
Originally Posted by bismic View Post
There is a GPCM orientation change in 04 AFTER the 9-22-03 ICP (high pressure oil rail) changes:

Look at your ICP sensor on the passenger side valve cover. Pay attention to how the GPCM is bolted up to the bracket that secures to the valve cover. If you happen to have it secured in a manner similar to a 2003 engine (HORIZONTAL ORIENTATION), you have a mid/late build 2004 engine. As such, your engine uses engine harness Ford part number 4C3Z-12B637-AA (Navistar ID# 1844262C93), to be used with glow plug harnesses part numbers 4C3Z-12A690-AA (Navistar ID# 1845915C9) right side, and 4C3Z-12A690-BA (Navistar ID# 1845793C9) left side.

If you have your GPCM mounted on the bracket, identically to the way it is on 2005 and later engines (VERTICAL ORIENTATION), you have a late/late build 2004 engine. As such, your engine use engine harness Ford part number 4C3Z-12B637-CA (Navistar ID# 1846377C92), and glow plug harness Ford part numbers 4C2Z-12A690-AB (Navistar ID# 1845794 C9) right side, and 4C2Z-12A690-BA (Navistar ID# 1845695 C9). Notice, the right side glow plug harness part number is also identical to that, that is used on '05 and later engines.
ahhh this is getting crazy with all the different things.. lol

ok so I looked at this vid of a 2003 GPCM that is mounted horizontal..


Mine is 100% mounted vertical as in the picture in my previous post.
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post #108 of 138 Old 08-19-2019, 07:20 AM
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However, by your vin# your truck uses a 5C3Z-12B637-AA and a 4C3Z-9D930-AA

Sent from my SM-G960U using Tapatalk

2004 F250 CCSB 4X4
4" Skyjacker lift
3:73 gears
35x12.5x18 Nitto Ridge Grapplers on Method MR309 wheels
KDD heads, ARP studs, BD exhaust manifolds, DieselSite up pipes, Mishimoto degas bottle
PHP Insight PRO
PHP Atlas 40 FICM tune
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post #109 of 138 Old 08-19-2019, 07:21 AM Thread Starter
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Quote:
Originally Posted by voodooridr View Post
The change was 09/22/03 so you're 366 days after the change

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ahh ok so it was 03 not 04 for the change.
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post #110 of 138 Old 08-19-2019, 07:24 AM
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Originally Posted by DAV!D View Post
ahh ok so it was 03 not 04 for the change.
Yup, and yours is listed as an '05 so remember that when parts shopping because there were a lot of other changes from '04 to '05

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2004 F250 CCSB 4X4
4" Skyjacker lift
3:73 gears
35x12.5x18 Nitto Ridge Grapplers on Method MR309 wheels
KDD heads, ARP studs, BD exhaust manifolds, DieselSite up pipes, Mishimoto degas bottle
PHP Insight PRO
PHP Atlas 40 FICM tune
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