Go Back   PowerStrokeArmy > Power Strokes > 7.3 Tech

Thread Tools Display Modes
Old 01-12-2020, 08:43 PM
10shots 10shots is offline
Member's Gallery
Join Date: Jan 2017
Posts: 27
Default Frustrated with Transmission rebuild , Help

, Iíve rebuilt this transmission once before and didnít have any problems , so 2 weeks ago I decided to freshen it up , after tear down, the intermediate and overdrive clutches had a some hot spots but nothing major wrong . I replaced those and checked all others . I got ready to put the pump back in a decided to change the bushing , I screwed up as I was working in my dim lighted shop , I knocked the bushing out the wrong way and busted that lip off the bushing stop or what ever itís called , so I had a spare pump and robbed that outer half , I also changed the stator tube , I made sure it was a 4R100 stator tube pump half but for gas burner ! , I bought a new converter from the Ford Dealer Also , now the trans had soft shifts , so I pulled it again , OD clutched burned , I thought there was a problem with the pump from changing the half and stator tube , I once again replaced clutches and bought a new reman pump , this is when I put the one way clutch in backwards , I got that fixed and now the trans still has soft shifts , OD is the worse slide bang from feels like low pressure , so I replaced the solenoid pack , same issue .
So Iím wondering if the converter could be the problem even though itís new , or is that even possible., any help on this would be greatly appreciated.
Old 01-13-2020, 07:15 PM
10shots 10shots is offline
Member's Gallery
Join Date: Jan 2017
Posts: 27
Default Trans pressure

Idle and neutral 60psi
Reverse 85 psi
OD 60 psi
2 60 psi
95 psi
At stall speed
Reverse 275 psi
OD 165 psi
2 165 psi
1 170 psi
On the interstate driving 60 mph if I go to the floor with the pedal it shifts down and when it shifts back up it hits 170 on the OD shift
Old 01-18-2020, 09:10 AM
Garbage_Mechanic Garbage_Mechanic is offline
Member's Gallery
Join Date: Jul 2011
Location: Central CA Foothills
Posts: 539

You need Mike Kovalasky he is Former Ford trans engineer on here or the nation.
Mine since 2001: 91 F250 RC 4x4 5spd 7.3 IDI 4.10LS Banks Turbo Electric Fuel 92 D60 w 97 brakes and Powerlock Hydro boost Flatbed
Hers since 7/03: 96 F250 CCSB 7.3 PSD 4x4 5spd 3.55 LS D60 AMP Powersteps Currently ungoing 22 yr Rehab Incl Swamps Long Block, S364.5, IC, RSK etc.
2 Harleys 7 Horses about 50 cows +-
Diesel Mechanic 40 yrs
Now 120 truck Fleet, 80 plus CNG powered
Old 01-18-2020, 09:34 AM
Mark Kovalsky's Avatar
Mark Kovalsky Mark Kovalsky is offline
Member's Gallery
Join Date: Jul 2011
Location: SE Florida, USA
Posts: 1,153

The pressures look good. The converter can't cause soft shifts.

Does it have a tune? That can cause soft shifts.
Former Ford Automatic Transmission Engineer

ďThe good thing about science is that it's true whether or not you believe in it.Ē ― Neil deGrasse Tyson
Old 01-26-2020, 04:42 PM
10shots 10shots is offline
Member's Gallery
Join Date: Jan 2017
Posts: 27

Update on on this , transmission is fixed , problem was the outer seal in the forward clutch drum , it it air checked as good as any I’ve done . All pressures looked good

Thread Tools
Display Modes

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 -6. The time now is 03:02 AM.


Powered by vBulletin®
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Designed by Military Ltd