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12-07-2021, 08:53 AM
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#1
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Name: 9 LIVES
Title: Demolition Expert
Status: Not Here
Join Date: Oct 2006
Location: Midland, NC
Member`s Gallery
Posts: 4,051
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P 1689 code
We've gotten a p1689 code on our vp truck. The truck will routinely stumble and sound like it has stumbled then pick back up.
My fuel pressure gauge reads 15psi at idle and 5psi under throttle.
I have only owned this truck since this past summer. The previous owner had put a new vp44 on it right before we bought it. The wiring on the back of the pump looks kinda suspect. Do you think the wiring is what would cause this code ?
__________________
2001 Dodge 3500 Flatbed
1995 Dodge 3500 Flatbed
2021 Ford F-250 7.3
Heads I win, tails you lose....
-Lee-
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12-07-2021, 08:56 AM
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#2
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Name: dieselbeef
Title: dick doggin
Status: Not Here
Join Date: Jul 2007
Location: myakka city florida
Member`s Gallery
Posts: 9,867
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comm error...that iring is shit...solder it and shrink wrap it...after thats a for sure fixed..see what happens but thats def not good....
__________________
02 quad cab 4x4 aluminum flatbed 63/68/14 hrvp INJ by weston 4.10 gorend/suncoast method race
01 2500 4x4 quad cab all stock/drag comp
07.5 3500 4x4 dually 4 dr 6.7 d&j extreme, fleece cheetah, gorend triple, cat filters,
rip wrongway...
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12-07-2021, 08:58 AM
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#3
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Name: dieselbeef
Title: dick doggin
Status: Not Here
Join Date: Jul 2007
Location: myakka city florida
Member`s Gallery
Posts: 9,867
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comm error..that wiring is shit...solder it and shrink wrap it...looks like they broke the plug getting it off..thats def an issue...see if it does it after that is fixed....that goes right to the ecm
__________________
02 quad cab 4x4 aluminum flatbed 63/68/14 hrvp INJ by weston 4.10 gorend/suncoast method race
01 2500 4x4 quad cab all stock/drag comp
07.5 3500 4x4 dually 4 dr 6.7 d&j extreme, fleece cheetah, gorend triple, cat filters,
rip wrongway...
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12-07-2021, 03:04 PM
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#4
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Name: 1320Cummins
Title: 2G Collector
Status: Not Here
Join Date: Feb 2009
Location: Houston TX
Member`s Gallery
Posts: 330
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P1689 - No Communication Between ECM & Injection
Pump Module
__________________
01 2500 QC SB 47RE 4X2
02 3500 QC 48RE 4X4
96 2500 CC NV4500 4X4
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12-11-2021, 08:00 AM
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#5
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Name: 9 LIVES
Title: Demolition Expert
Status: Not Here
Join Date: Oct 2006
Location: Midland, NC
Member`s Gallery
Posts: 4,051
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So I pulled the wire harness loose from the pump and no sooner did I do that and two wires popped loose out of the little plastic connectors. So I am assuming they were the culprits of the no communication code. I soldered the wires together and went for a 30 mile trip with no issues....fingers crossed, I hope this was it!
__________________
2001 Dodge 3500 Flatbed
1995 Dodge 3500 Flatbed
2021 Ford F-250 7.3
Heads I win, tails you lose....
-Lee-
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12-12-2021, 06:09 AM
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#6
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Name: Red Sleeper
Title: Too Much Time
Status: Not Here
Join Date: Aug 2009
Location: Lone Star State
Member`s Gallery
Posts: 4,597
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Glad you found the issue.
Are those exposed wires in the picture? South of the butt connector. Wonder why they were spliced.
__________________
Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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12-13-2021, 05:51 PM
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#7
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Name: dieselbeef
Title: dick doggin
Status: Not Here
Join Date: Jul 2007
Location: myakka city florida
Member`s Gallery
Posts: 9,867
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we told ya..we know everything..lol
__________________
02 quad cab 4x4 aluminum flatbed 63/68/14 hrvp INJ by weston 4.10 gorend/suncoast method race
01 2500 4x4 quad cab all stock/drag comp
07.5 3500 4x4 dually 4 dr 6.7 d&j extreme, fleece cheetah, gorend triple, cat filters,
rip wrongway...
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12-17-2021, 07:20 PM
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#8
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Name: 9 LIVES
Title: Demolition Expert
Status: Not Here
Join Date: Oct 2006
Location: Midland, NC
Member`s Gallery
Posts: 4,051
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Quote:
Originally Posted by Red Sleeper
Glad you found the issue.
Are those exposed wires in the picture? South of the butt connector. Wonder why they were spliced.
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It was one wire that was exposed....couldn't figure out why! it was basically naked pretty far back into the plastic sleeve that the 3 wires were in. So I isolated that wire and wrapped it in electrical tape and then put the wires into wiring loom the best I could.
__________________
2001 Dodge 3500 Flatbed
1995 Dodge 3500 Flatbed
2021 Ford F-250 7.3
Heads I win, tails you lose....
-Lee-
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12-20-2021, 11:54 AM
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#9
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Name: dieselbeef
Title: dick doggin
Status: Not Here
Join Date: Jul 2007
Location: myakka city florida
Member`s Gallery
Posts: 9,867
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need to find a good harness and cut it off a ft from the plug..solder and insulate em righ and be done with it...
__________________
02 quad cab 4x4 aluminum flatbed 63/68/14 hrvp INJ by weston 4.10 gorend/suncoast method race
01 2500 4x4 quad cab all stock/drag comp
07.5 3500 4x4 dually 4 dr 6.7 d&j extreme, fleece cheetah, gorend triple, cat filters,
rip wrongway...
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