4r70w slip in first, but not in manual first - TCCoA Forums
LinkBack Thread Tools
post #1 of 5 (permalink) Old 03-18-2006, 01:26 PM Thread Starter
Join Date: Mar 2006
Posts: 3
4r70w slip in first, but not in manual first

I have the momentary slip in first problem. When the trans was toredown,
the rear bushing in the stator support had spun and the #2 thrust washer
was missing. Stator support and forward drum were replaced, and cooler
was flushed. The trans still has slip in first, but not in manual first. When I
pulled it and rechecked the support and seals, nothing looks wrong.
What have I overlooked or missed?
trenchwarrior is offline  
Sponsored Links
post #2 of 5 (permalink) Old 03-20-2006, 11:02 AM
Veteran Poster
Join Date: Dec 2004
Location: Kansas CIty
Age: 39
Posts: 790
never heard of somthing like this. The reverse band applies in manaul 1st I believe - but that shouldn't effect anything really. Might check your Presure taps in Forward gear.

------------------------- Dan Gilsdorf ---------------------------
SilverFox is offline  
post #3 of 5 (permalink) Old 03-20-2006, 05:58 PM Thread Starter
Join Date: Mar 2006
Posts: 3
I have checked line and forward clutch pressures. line
65 psi @ idle and rises properly with throttle. In OD
forward clutch is 65 psi @ idle, Momentary drop to
almost zero then normal rise as throttle is opened.
In manual low 65 psi @ idle with proper rise. Both
forward and reverse hold air pressure when tested
on the bench.
trenchwarrior is offline  
Sponsored Links
post #4 of 5 (permalink) Old 04-08-2006, 02:28 AM
Refrigerator Raider Hater
GreenBird's Avatar
Join Date: Jul 2002
Location: Vermont
Age: 36
Posts: 11,719
In manual first, the low reverse band is applied, but it's not in "drive" first. Please note this is not the reverse clutch.

Causes range from the #6 shuttle ball, loose valve body bolts, damaged valve body gasket, low reverse servo seals (piston and cover), LRS retaining ring, or the anchor pins (part of case).

Matt "Looks Like Egon" Davis
96 Alpine Green V8
98 Audi A8 4.2Q in Racing Green Totalled
02 Audi A8L 4.2Q in Black

I buy my OEM Ford parts at 10% over dealer cost from Steve in White Bear Lake, MN.
You drive "like a man possessed"... by a woman!
GreenBird is offline  
post #5 of 5 (permalink) Old 04-10-2006, 05:36 PM Thread Starter
Join Date: Mar 2006
Posts: 3
The more I look at this, it seems it is some kind of
valve body strangeness. problem only seems to
occur after warmup. I was told to find a salvage
unit and install it. I still have the old unit, they
didn't want a core. I should have known that
this was trouble when the front pump bolt holes
needed helicoiling. Acts like it was assembled it
with an impact.
trenchwarrior is offline  

Quick Reply

Register Now

In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user 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:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome