66GMC said:
Well, I've done a little more research from home on this.
http://www.fahringer.net/x/4r100disasm.htm
Have a look at item #122.
{122 7H322 Valve assembly — transmission cooler bypass (model dependent) } decribes a 'valve' and it looks like maybe right next to that rear banjo fitting.
I couldn't find anything on my Ford (Dealer Only) website, but this TSB may be relevant and contain the part number if you can dig it up somewhere
I can't find anything for Ford but I just remembered I dug up some TSB's on a 94 Dodge van that I rebuilt the tranny in a few months ago and a TSB was listed for:
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A/T - Cooler Bypass Kit/Restricted Fluid Flow
NO: 21-03-95 Rev. A
GROUP: Transmission
DATE: Jun. 16, 1995
SUBJECT:
RWD Automatic Transmission Cold Temperature Cooler Bypass Kit
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-03-95 DATED APR. 14, 1995 WHICH SHOULD BE REMOVED FROM YOUR FILES. 1993 MODEL YEARS HAVE BEEN DROPPED. ALL REVISIONS ARE MARKED WITH AN **ASTERISKS**.
MODELS:
**1994-1995** (AB) Ram Van/Wagon
**1994-1995** (AN) Dakota
**1994-1995** (ZJ) Grand Cherokee
1994-1995 (BR) Ram Truck
SYMPTOM/CONDITION:
At ambient temperatures of -15 degrees F or below, vehicles equipped with auxiliary transmission coolers may experience a lack of transmission fluid flow to the transmission. At these low temperatures, the automatic transmission fluid might freeze in the transmission cooler lines restricting fluid flow. This can cause damage to the transmission, and in periods of extended driving, transmission failure may result.
DIAGNOSIS:
The cold weather by-pass kit should be installed if any of the following conditions are met:
1. If the vehicle is used in areas of extended cold ambient temperatures (below -15 degrees F).
2. If the transmission has failed in cold ambient temperatures, install the bypass kit when repairing or replacing the transmission. Follow proper cooler flushing and transmission replacement procedures found in the Dodge Ram Service Manual.
Note IN HOT AMBIENT TEMPERATURES, THIS KIT WILL DECREASE THE COOLING CAPACITY OF THE TRANSMISSION COOLING SYSTEM. AS A RESULT, UNLESS THE ABOVE STATED CONDITIONS EXIST IT IS NOT RECOMMENDED THAT THIS KIT BE INSTALLED.**
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:Kit, Transmission Cooler Bypass 1994-1995 (BR)
Install 1994-1995 (ZJ)
1994-1995 (AN)
1994-1995 (AB)
FAILURE CODE: P8 - New Part
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I haven't been able to find a diagram for the valve but I have the part# 04798633 and adaptor p/n 04798634.
I don't know why "Note IN HOT AMBIENT TEMPERATURES, THIS KIT WILL DECREASE THE COOLING CAPACITY OF THE TRANSMISSION COOLING SYSTEM." But that has my curiosity.