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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 04-10-2019, 08:56 PM   #1 (permalink)
Diehardchevy
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New motor with issues

One day it just shut off. Checked
1. Grounds
2. New hp pump
3. New lift pump
4. New knock sensor
5. New starter switch
6.New computer board
Ran one day now nothing

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Last edited by OkDually; 04-10-2019 at 10:05 PM. Reason: title adj
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Old 04-10-2019, 09:05 PM   #2 (permalink)
heymccall
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Define nothing.
Headlights work?
Horn?
Does starter turn engine over?

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Old 04-10-2019, 09:37 PM   #3 (permalink)
Sirleitet
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We need more information.


No crank no start, or crank no start or crank won't idle?
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Old 04-10-2019, 10:29 PM   #4 (permalink)
Diehardchevy
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It will turn over but will not run. The glow plugs quit lighting up. Check engine light will not give any codes. You can hear power to the computer but that is it.
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Old 04-10-2019, 10:32 PM   #5 (permalink)
Diehardchevy
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Quote:
Originally Posted by Diehardchevy View Post
It will turn over but will not run. The glow plugs quit lighting up. Check engine light will not give any codes. You can hear power to the computer but that is it.
I think it electrical but I can’t find any wiring diagrams in order to check it. It’s been in a shop for 3 months now. They don’t know either. Any help will be much appreciated
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Last edited by OkDually; 04-11-2019 at 08:11 AM. Reason: repaired quote
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Old 04-10-2019, 11:22 PM   #6 (permalink)
Sirleitet
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I'd get my money back if my truck was in the shop for 3 months.


Check the glow plug circuit for continuity aswell as the glow plug controller so we can rule out the glow plugs.
What is "new hp pump" and "new computer board"?
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1995 Chevrolet Cheyenne K2500 6.5TD / Suzuki Katana GS650G
Mods: Racor 690r fuel filter/w heater, new front face, new radiator and support bushings. Repaired both cab corners & frame. (Rust.)
Relocated PMD, DIY extended wiring harness. # of PMD replaced since owned truck in 2013: 5.
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Old 04-11-2019, 12:22 AM   #7 (permalink)
JMJNet
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You know NEW does not mean it is working???
There are still need of troubleshooting, making sure that everything is plug in properly and making sure the new parts are working.
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Old 04-11-2019, 08:13 AM   #8 (permalink)
OkDually
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Quote:
Originally Posted by Diehardchevy View Post
I think it electrical but I can’t find any wiring diagrams in order to check it. It’s been in a shop for 3 months now. They don’t know either. Any help will be much appreciated
Go through all of your grounds using this link for reference:
https://www.dieselplace.com/forum/sh...d.php?t=163087

Wiring diagrams can be found here:
BBB Industries- Premium Alternators, Starters, Power Steering Products and Turbochargers | TSB's & Wiring Diagrams

Be sure to research the 6.5L FAQ page for most answers you seek

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Last edited by OkDually; 04-11-2019 at 08:15 AM.
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Old 04-11-2019, 09:08 AM   #9 (permalink)
jnlperformance
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I agree with everyone up there... theres alot of missing info...

You can copy the diagnostic sticky and paste it here. Fill it out.

https://www.dieselplace.com/forum/63...10-2009-a.html
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Last edited by jnlperformance; 04-11-2019 at 09:08 AM.
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Old 04-11-2019, 12:48 PM   #10 (permalink)
Diehardchevy
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Quote:
Originally Posted by JMJNet View Post
You know NEW does not mean it is working???
There are still need of troubleshooting, making sure that everything is plug in properly and making sure the new parts are working.
They put a new board from behind the glove box with the old prom chip and it ran like a champ. I went to pick it up and it wouldn’t run. The glow plugs wouldn’t activate and warm up either. They said they checked the glow plugs and they seemed fine

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