th125 fluid flush... now broke? - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 07-03-2008, 12:23 PM
Registered User
Last photo:
Join Date: Sep 2006
Location: peoria, il
Posts: 10
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
th125 fluid flush... now broke?

i bought an '89 celebrity recently, and went through all the "catch up" maintenance. Yesterday I flushed the transmission. The fluid looked good, not perfectly scarlet but close, no smell. The pan looked decently clean, no factory plastic plug in it, so I assume it was maintained. I drained and filled the pan, then ran the car in park while draining the fluid that was pushed out of the cooler, while pouring in the same rough amount into the dipstick. Put it all back, topped off the fluid, and now... I think I broke the tranny.

It shifts slower, revving up a little between shifts. Sometimes it seems like the torque converter is acting up... it "slips" at the start of each gear a little than catches fully, and it will occasionally die in drive while at a light, with a little forward lurch.

Now, the CEL light does come on at times, with one of the codes being the vehicle speed sensor. I'm told that controls the converter lockup. Can it be that the new fluid exasperates a pre-existing condition? Or am I not that lucky?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 07-03-2008, 12:32 PM
ericnova72's Avatar
More for Less Racer
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 48
Posts: 11,500
Wiki Edits: 0

Thanks: 83
Thanked 1,055 Times in 931 Posts
Check the fluid again, sounds like it is low after running it filled the converter, cooler, and valve body back up. You are checking it running and in park, right?? Make sure you check both sides of the stick because fluid drag up the tube can put a false reading on just one side of the stick.

It is also possible that you disturbed an electrical connection outside the trans somewhere. Almost 20 year old wiring around engines and tranny's gets brittle with heat and time.

Last edited by ericnova72; 07-03-2008 at 12:35 PM. Reason: more info
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
master cylinder interchange runn141 Suspension - Brakes - Steering 7 05-03-2009 06:15 AM
Flush your lines! Dave57210 Suspension - Brakes - Steering 1 02-12-2008 01:26 AM
Transmission fluid problems? Croz Transmission - Rearend 7 12-22-2006 02:37 AM
Flush Brake fluid CptBil Suspension - Brakes - Steering 5 10-18-2002 09:31 AM
how low on fluid (TH350) before it quits moving? HotRodF100 Transmission - Rearend 4 10-11-2002 07:34 PM

All times are GMT -6. The time now is 07:29 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright 1999 - 2012. All Rights Reserved.