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Old April 25th, 2011, 07:35 PM   #721
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Quote:
Originally Posted by Tranny Tom View Post
Me thinks trans is in limp mode. Do you feel the trans shift at all? It sounds like it is taking of in third gear which would explain the no power in 2wd and power in 4 low.
I agree, I think your on to something.

Becky does it shift at all?
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Old April 25th, 2011, 07:45 PM   #722
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Are you burning the tires in 2wd?
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Old April 25th, 2011, 07:50 PM   #723
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I agree, I think your on to something.

Becky does it shift at all?

Taking it for a spin.....be right back
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Old April 25th, 2011, 08:00 PM   #724
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Quote:
Originally Posted by Tranny Tom View Post
Me thinks trans is in limp mode. Do you feel the trans shift at all? It sounds like it is taking of in third gear which would explain the no power in 2wd and power in 4 low.
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Originally Posted by BigTony View Post
I agree, I think your on to something.

Becky does it shift at all?

Took it ror for a ride. In 2 wheel drive it did not shift at all and never got enough power to even try, in 4 low it shifted only once, so im guessing 3rd into overdrive. I can manually shift it and it's a whole diff animal. Wants to launch.

What's the fix?
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Old April 25th, 2011, 08:06 PM   #725
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Are you set up with a manual valve body and must always shift it manually?
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Old April 25th, 2011, 08:17 PM   #726
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Are you set up with a manual valve body and must always shift it manually?

hope not. thats not what i wanted.
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Old April 25th, 2011, 08:20 PM   #727
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For some reason there is no power going to the trans. It needs to be scanned and checked for power.
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Old April 25th, 2011, 08:21 PM   #728
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Originally Posted by jeepbrattt View Post
hope not. thats not what i wanted.
Was told it was a stock rebuild with about 500 miles on it when I bought it. Maybe a shift kit at the most(he wasn't sure, it was his dad's) but definitely not full manual.
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Old April 25th, 2011, 08:23 PM   #729
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Was told it was a stock rebuild with about 500 miles on it when I bought it. Maybe a shift kit at the most(he wasn't sure, it was his dad's) but definitely not full manual.
thanks sean
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Old April 25th, 2011, 08:24 PM   #730
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Quote:
Originally Posted by Tranny Tom View Post
For some reason there is no power going to the trans. It needs to be scanned and checked for power.

anyone have a scanner they can stop by with?
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Old April 25th, 2011, 08:25 PM   #731
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No problem, I hope it gets working for ya soon!
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Old April 25th, 2011, 08:47 PM   #732
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scanner will be here tomorrow afternoon

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Old April 26th, 2011, 12:15 PM   #733
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the 4l80e has 2 speed sensors on the trans. 1 in the front half of the case and 1 in the rear half. they are 2 wire plugs and i think they are purple. make sure they are both plugged in and didn't get knocked out when they were doing the exhaust. i think the 4l80 is the only trans with the 2 speed sensors. i believe the 4l60s need the speed sensor from the t case also.
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Old April 26th, 2011, 01:34 PM   #734
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Just wanted to point out that there are like 8 pictures in this thread with 753 posts
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Old April 26th, 2011, 05:05 PM   #735
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Quote:
Originally Posted by fabricator View Post
the 4l80e has 2 speed sensors on the trans. 1 in the front half of the case and 1 in the rear half. they are 2 wire plugs and i think they are purple. make sure they are both plugged in and didn't get knocked out when they were doing the exhaust. i think the 4l80 is the only trans with the 2 speed sensors. i believe the 4l60s need the speed sensor from the t case also.
hecked, thay are conected. The front one has wires that are laying damn near on the linkage, don't know if that may be an issue.

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Just wanted to point out that there are like 8 pictures in this thread with 753 posts

Ok smart ass...here's another pic for ya.



This was the only plug I found that wasn't connected to anything around the trans. Anything? Or is this where a scanner hooks to check for issues?
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Old April 26th, 2011, 05:11 PM   #736
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Says PnP switch.
Should be park/Nuetral Position Switch located on left side of the transmission. PCM does not know what you want it to do!!!!!
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Old April 26th, 2011, 05:13 PM   #737
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Says PnP switch.
Should be park/Nuetral Position Switch located on left side of the transmission. PCM does not know what you want it to do!!!!!
Got under it to see if the plugs Kevin mentioned were hooked. Also was a round larger plug between the two connected. Looked around and saw this. So I need to find where this plugs in directly on the trans right?

Last edited by jeepbrattt; April 26th, 2011 at 05:44 PM.
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Old April 26th, 2011, 05:43 PM   #738
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Couldn't see anyplace where this would plug in, altho I couldn't see alot with the skid and everything else in the way. Thanks for the call Dale!

Thinking maybe switch needs to be changed? Motor is 04, trans Sean guessed around 93. Ideas?
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Old April 26th, 2011, 06:20 PM   #739
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none that dont involve a large hammer
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Old April 26th, 2011, 08:11 PM   #740
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none that dont involve a large hammer

I'm almost to that point!

Talked to Kevin, he said Jimsperformance told him that plug is only needed to run back up lights on a 4l80. It plugs into a stock 4l80 shifter (which im not using. The wires that attach to it are coiled up by the back of the intake.
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