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Old 07-21-2013, 12:48 PM   #76
68GMCCustom
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Re: 4l80e shifting ?

have you traced all the pins/wires end to end? I only ask as maybe there is a break/disconnect somewhere in the wiring?
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'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
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Old 07-21-2013, 01:06 PM   #77
mooseknuckles
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Re: 4l80e shifting ?

that's my next move I guess...
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Old 08-03-2013, 04:06 PM   #78
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Re: 4l80e shifting ?

maybe this is the problem....
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Old 08-03-2013, 07:11 PM   #79
BR3W CITY
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Re: 4l80e shifting ?

His instant message should have read
"Tune is correct as I have checked it, but clearly I just stepped on my d!ck as I didn't make the harness right".
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Old 08-04-2013, 07:32 PM   #80
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Re: 4l80e shifting ?

fixed now I hope....
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Old 04-26-2016, 06:38 PM   #81
w00dst0ck
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Re: 4l80e shifting ?

I have a PSI harness as well, with a freshly built 4l80 and Circle D converter. Thought my ISS was bad as I'm getting p0171 as well. Now I'm going to double check and make sure these goons pinned the harness correctly.
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Old 04-26-2016, 07:53 PM   #82
mooseknuckles
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Re: 4l80e shifting ?

Quote:
Originally Posted by w00dst0ck View Post
I have a PSI harness as well, with a freshly built 4l80 and Circle D converter. Thought my ISS was bad as I'm getting p0171 as well. Now I'm going to double check and make sure these goons pinned the harness correctly.
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I've got two harness' and pcm's from PSI and both times they've been f**ked up! my 6.0l/4l80e was pinned wrong and my 5.3/700r4 pcm was tuned for a 4.3 v6! ...never again.
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Old 04-26-2016, 07:58 PM   #83
clinebarger
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Re: 4l80e shifting ?

Very common issue with PSI, Didn't know that when Mooseknuckles started this thread 4 years ago.
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