The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.
Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps
Reload this Page 4l80e shifting ?

Web 67-72chevytrucks.com
Home Forums Gallery Site Merchandise Register FAQ Members List Subscribe Calendar


Reply
Page 3 of 4 12 3 4
 
Thread Tools Display Modes
Old 08-05-2012, 11:17 AM   #51
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
It's been this way for the last 3 months!....but I am a little worried.....checked all the tranny connections, could'nt find nothin...
mooseknuckles is offline   Reply With Quote
Old 08-05-2012, 08:26 PM   #52
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 4l80e shifting ?
Quote:
Originally Posted by mooseknuckles View Post
It's been this way for the last 3 months!....but I am a little worried.....checked all the tranny connections, could'nt find nothin...
Just because the transmission hasnt broke yet doesnt make it OK.

Do you own a Digital Volt/Ohm Meter?
clinebarger is offline   Reply With Quote
Old 08-05-2012, 08:27 PM   #53
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
yep...?
mooseknuckles is offline   Reply With Quote
Old 08-05-2012, 09:10 PM   #54
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 4l80e shifting ?
Did you "Ohm" the two ISS wires, Did you "Ohm" the ISS sesor?
clinebarger is offline   Reply With Quote
Old 08-05-2012, 09:21 PM   #55
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
no...it was too hot...what kinda reading should I be lookin for?
mooseknuckles is offline   Reply With Quote
Old 08-05-2012, 09:35 PM   #56
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 4l80e shifting ?
Quote:
Originally Posted by mooseknuckles View Post
no...it was too hot...what kinda reading should I be lookin for?
In Post #40 gave you the ohm reading for the sensor, I also provided PCM pin locations/wire colors for the ISS sensor. The ohm reading when checking continuity will be close to zero is the wire is good & in the correct location.
clinebarger is offline   Reply With Quote
Old 08-05-2012, 09:47 PM   #57
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
everything "looks" good...it's a brand new psi harness, all the pins are pushed in, connectors are tight...I should of switched the iss and oss connectors around and checked the codes.....
mooseknuckles is offline   Reply With Quote
Old 08-06-2012, 02:31 AM   #58
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: 4l80e shifting ?
I think what cline's getting at is that he's given ya the info twice, and you still haven't gone out to the garage with the volt meter yet.

I'm breaking your balls, but it won't fix itself.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 08-06-2012, 08:51 AM   #59
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
...only prob is, my "garage" is 50km away....
mooseknuckles is offline   Reply With Quote
Old 08-06-2012, 01:07 PM   #60
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: 4l80e shifting ?
as an american, i assume that is a long distance? lol I'm kidding.
that kinda sucks tho....that would piss me off with the weather yall get up there.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 08-06-2012, 02:07 PM   #61
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
lol...yeah, finally got a break from the 100+ degree weather we've been having...
mooseknuckles is offline   Reply With Quote
Old 08-06-2012, 11:54 PM   #62
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 4l80e shifting ?
Quote:
Originally Posted by mooseknuckles View Post
lol...yeah, finally got a break from the 100+ degree weather we've been having...
100 degree weather???
clinebarger is offline   Reply With Quote
Old 08-07-2012, 05:53 PM   #63
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
Quote:
Originally Posted by clinebarger View Post
100 degree weather???
yep....my igloo is melting as we speak....
mooseknuckles is offline   Reply With Quote
Old 08-16-2012, 10:06 PM   #64
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
pulled the wire off of the brake switch....now that codes gone.....?
mooseknuckles is offline   Reply With Quote
Old 08-17-2012, 01:36 AM   #65
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: 4l80e shifting ?
did you have the switch wired correctly?
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 08-17-2012, 06:11 AM   #66
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
Quote:
Originally Posted by BR3W CITY View Post
did you have the switch wired correctly?
I wired it up the way as per cline's diagram.....brand new switch as well.....?
mooseknuckles is offline   Reply With Quote
Old 08-20-2012, 05:40 PM   #67
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
I think the hard shifts are gone now as well.....wtf?
mooseknuckles is offline   Reply With Quote
Old 08-20-2012, 07:23 PM   #68
68GMCCustom
Truck and auto performance nut
 
68GMCCustom's Avatar
 
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
Re: 4l80e shifting ?
my 4L85e seemed to shift hard its 1st miles...now seems to have calmed down a bit?
__________________
Kurt -

'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
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
68GMCCustom is offline   Reply With Quote
Old 07-06-2013, 05:59 PM   #69
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
so I've fed with this problem for quite awhile, got very upset and forgot about it....it's still shifting very hard. after 20-30 mins of driving is when it starts, I can stop and shut it off, then its good again for a little bit...tried checking the resistance in the wires, not getting anything although Im not sure wtf Im doing either!.....still throwing this code...I know this is the problem, but no clue on what to do...I would appreciate any input.
Attached Images
 
mooseknuckles is offline   Reply With Quote
Old 07-06-2013, 09:04 PM   #70
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 4l80e shifting ?
Swap positions with the speed sensors, If the ISS sensor is bad, It will now effect the OSS signal to the ECM instead of the ISS signal.

Swap sensors.....Drive till it acts up....If the sensor is in fact Bad, It will not want to up-shift at all.....Stuck in 1st gear.
clinebarger is offline   Reply With Quote
Old 07-08-2013, 08:21 AM   #71
Hart_Rod
*************
 
Hart_Rod's Avatar
 
Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
Re: 4l80e shifting ?
Quote:
Originally Posted by clinebarger View Post
Swap positions with the speed sensors, If the ISS sensor is bad, It will now effect the OSS signal to the ECM instead of the ISS signal.

Swap sensors.....Drive till it acts up....If the sensor is in fact Bad, It will not want to up-shift at all.....Stuck in 1st gear.
Great insight and trouble shooting techniques Cline! Now I know who to come to if I have problems when I fire up my new setup .
Posted via Mobile Device
Hart_Rod is offline   Reply With Quote
Old 07-08-2013, 04:00 PM   #72
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: 4l80e shifting ?
I'll link this just because;


I can't stand this guys voice, but he is pretty good about "dummy" instructions on things like checking sensors and locating terminations. Its about the 717 on a saturn, but the concept of checking it is the same.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 07-10-2013, 06:38 PM   #73
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
thanks.....I bought a new ISS....I'll see what happens.
mooseknuckles is offline   Reply With Quote
Old 07-16-2013, 04:03 PM   #74
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
well that didn't work....no reading on the wires either...
mooseknuckles is offline   Reply With Quote
Old 07-21-2013, 12:02 PM   #75
mooseknuckles
Registered User
 
mooseknuckles's Avatar
 
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
Re: 4l80e shifting ?
....I spoke with jon at psi, he gave me the pins for the iss, says he checked the tune himself, some thing is wrong in the tranny...any idea of what it could be??
mooseknuckles is offline   Reply With Quote
Reply
Page 3 of 4 12 3 4

Bookmarks

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 12:23 AM.

67-72chevytrucks.com - Archive - Privacy Statement - Top

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com