Check engine light on after engine swap - Stays on after disconnected

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Dec 4, 2015 | 04:36 PM

#21

1FastBrick

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From: JunkYard

Quote:

Originally Posted by TXjeepTJ

FastBrick, would you know why the engine isn't getting spark w/ the V6 PCM (with a 6.0L tune flashed to it)?? I read that the PCMs are exactly the same internally, so wiring (as stated earlier) can't be the issue.

The engine runs perfectly find w/ the older PCM, only issue is the check engine light being stuck on. Not sure why the V6 pcm with the exact same tune would not want to start

It's probably a VATS Issue due to a vin mismatch using HP tuners.

Disable the VATS and reflash the tune.

Dec 21, 2015 | 08:25 AM

#22

TXjeepTJ

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From: Houston

Quote:

Originally Posted by 1FastBrick

It's probably a VATS Issue due to a vin mismatch using HP tuners.

Disable the VATS and reflash the tune.

I am having the issue using the V6 PCM, which has the matching VIN. Should I "write entire"? I have been just doing write changes.

I did not flash the V6 pcm w/ a complete V8 tune, I just went into the V6 PCM and changed all the settings to match the V8 settings

Dec 21, 2015 | 09:11 PM

#23

DrX

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From: Canada

Quote:

Originally Posted by TXjeepTJ

Then the PCM inputs/outputs will still be functioning as if running the V6. The entire V8 operating system is required to run the V8.

Dec 24, 2019 | 07:30 AM

#24

GREENSIERRA

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From: Canada

Maybe I missed it but how many miles on the build?
have the rings seated yet?

Dec 24, 2019 | 06:01 PM

#25

darkirish63

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From: NC

This is more than 4 years old, brother. I don't think anyone is tracking.

Dec 28, 2019 | 11:54 AM

#26

Tampa Tuning

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From: Tampa

Quote:

Originally Posted by darkirish63

This is more than 4 years old, brother. I don't think anyone is tracking.

it does take a while for the rings to seat lol

Last edited by 1FastBrick; Aug 2, 2023 at 01:21 PM.

Dec 30, 2019 | 01:18 PM

#27

GREENSIERRA

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From: Canada

Lol
it showed up at the top for some reason, didn't check the date because I thought it was new

Dec 30, 2019 | 01:20 PM

#28

GREENSIERRA

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From: Canada

Actually, I dont even remember posting in this, it was supposed to go to a different post.
hmmmm

Dec 31, 2019 | 08:53 AM

#29

MikeGyver

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From: Suburban Chicago

It's probably this related thread thing that shows up if you accidentally keep scrolling. You think you scrolled in the thread that you wanted to post, but you are actually in a different thread without going to a new page.
I would have voted against it, but nobody asked.