G56 swap won’t start - Competition Diesel.Com

RonC6.7 · 08-15-2021, 05:10 PM

68rfe swap to g56 electrical problems
I have a Manuel file downloaded to the truck the battery’s at at 12vs the wire harness for the auto is all there except for the trans controller on the frame rail and the wiring for exhaust monitoring systems I started to get rid of. I would go to start up the truck and the starter wouldn’t come out and sounded like it would just tap the flywheel at first I thought it wasn’t lining up so I pulled it out multiple times to check that it was in fact shooting out and twisting and it was but then you wouldn’t hear the starter the dash lights would die I knew it was electrical.
I’m coming up with codes

* P2508 - exam-pcm power input signal intermittent
* p0562 - system voltage low
* p0750 - shift solenoid A. This is odd being that it’s a Manuel file

My assumption is that in the harness I don’t have a complete Circuit? or that the tune file isn’t telling the computer not to read something that is no longer there?

jasonc · 08-15-2021, 06:13 PM

Being you said the starter did try to kick out but just weak, I'd check over your connections and batteries.

RonC6.7 · 08-15-2021, 06:15 PM

Quote:

Originally Posted by jasonc

Being you said the starter did try to kick out but just weak, I'd check over your connections and batteries.

I’ve already done this I should have mentioned this Thanks

RonC6.7 · 08-19-2021, 01:51 AM

I went from not starting to getting it to start but I’m still having a voltage problem it was giving me a check gauges sign and the voltage sign. The code is still ecu intermittent signal. I drove with 2 almost new battery’s and drove it with this problem and it ended up throwing a check engine light and I had to pull over and it wouldn’t restart one of the battery’s voltage went down to 10 volts any ideas?

RonC6.7 · 08-21-2021, 02:29 AM

I got it all figured out. Thanks for nothing

thatguy69 · 08-21-2021, 10:34 AM

Quote:

Originally Posted by RonC6.7

I got it all figured out. Thanks for nothing

Your welcome

SPEEDSHIFT · 08-22-2021, 06:33 AM

Quote:

Originally Posted by RonC6.7

I got it all figured out. Thanks for nothing

What a little bish.

jasonc · 08-22-2021, 01:09 PM

He probably wiggled the terminals, ha.

T-MAN · 08-22-2021, 02:49 PM

I bet he looked in his owners manuel

08-15-2021, 05:10 PM	#1
RonC6.7 Name: RonC6.7 Title: Rookie Status: Not Here Join Date: Jul 2021 Member`s Gallery Posts: 18	G56 swap won’t start 68rfe swap to g56 electrical problems I have a Manuel file downloaded to the truck the battery’s at at 12vs the wire harness for the auto is all there except for the trans controller on the frame rail and the wiring for exhaust monitoring systems I started to get rid of. I would go to start up the truck and the starter wouldn’t come out and sounded like it would just tap the flywheel at first I thought it wasn’t lining up so I pulled it out multiple times to check that it was in fact shooting out and twisting and it was but then you wouldn’t hear the starter the dash lights would die I knew it was electrical. I’m coming up with codes * P2508 - exam-pcm power input signal intermittent * p0562 - system voltage low * p0750 - shift solenoid A. This is odd being that it’s a Manuel file My assumption is that in the harness I don’t have a complete Circuit? or that the tune file isn’t telling the computer not to read something that is no longer there?

08-22-2021, 02:49 PM	#9
T-MAN Name: T-MAN Title: misunderstood Status: Not Here Join Date: Sep 2008 Member`s Gallery Posts: 352	I bet he looked in his owners manuel __________________ 2001.5 ppump allison 11.399@ 117.90 6850# 1997 rcsb 12v 6.7 9.38 @ 146.54

08-15-2021, 06:13 PM	#2
jasonc Name: jasonc Title: Too Much Time Status: Not Here Join Date: Nov 2009 Member`s Gallery Posts: 4,412	Being you said the starter did try to kick out but just weak, I'd check over your connections and batteries.

08-19-2021, 01:51 AM	#4
RonC6.7 Name: RonC6.7 Title: Rookie Status: Not Here Join Date: Jul 2021 Member`s Gallery Posts: 18	I went from not starting to getting it to start but I’m still having a voltage problem it was giving me a check gauges sign and the voltage sign. The code is still ecu intermittent signal. I drove with 2 almost new battery’s and drove it with this problem and it ended up throwing a check engine light and I had to pull over and it wouldn’t restart one of the battery’s voltage went down to 10 volts any ideas?

08-21-2021, 02:29 AM	#5
RonC6.7 Name: RonC6.7 Title: Rookie Status: Not Here Join Date: Jul 2021 Member`s Gallery Posts: 18	I got it all figured out. Thanks for nothing

08-22-2021, 01:09 PM	#8
jasonc Name: jasonc Title: Too Much Time Status: Not Here Join Date: Nov 2009 Member`s Gallery Posts: 4,412	He probably wiggled the terminals, ha.