Tugger installed reverse slipping
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Joined: Dec 2002
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Tugger installed reverse slipping
I just installed my tugger kit and everything works fine except reverse. It seems like it is slipping very badly in reverse. I used Mikes thread https://www.ford-trucks.com/forums/7...l-article.html for the install and did only the accumilator valve body. The solonoid pack had already been done by ford. I cleaned everything with brake cleaner and de burred after i drilled the 2 holes for the valve body. I also went with the .096 for 1st, .084 3rd, .096 4th. I am really disappointed. I also ran it through fwd and reverse several times and serviced with 9 quarts of fluid. Was i supposed to remove the gasket above the accumilator valve body? What would be suspect of the problem?
Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
Well, the valve body mods should not have affected the reverse at all unless something has happened. They are mostly mods to tighten up the shifting from 1-2, 2-3 etc. Reverse is a single gear and notoriously weak in our trucks. If all else is fine, I am stumped because I was going to say make sure you have the proper fluid level. Fill it up to the very top of the stick cold. I think your Tq converter is slipping from a possible lack of fluid. Just a thought, might try the fluid, or we wait for Mark K to comment.
Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
Yeah, I can't think of any reason why that would happen either. So you got the Tugger & only did the accumulator? If you put in the entire Tugger kit, you have to pull all the bodies off. I did it all except above that main plate. I couldn't get the solenoid pack off, and didn't want to break it.
Aside from the reverse issue, how is the shifting? You might have to get custom tuning to match up with the kit. Before that, we need to figure out why your reverse is jacked up obviously.
Aside from the reverse issue, how is the shifting? You might have to get custom tuning to match up with the kit. Before that, we need to figure out why your reverse is jacked up obviously.
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Thanks Mike, I will check the fluid again like you said. It`s funny this has happened because like i said i only installed the Accumilator valve body mods and nothing else. Everything was torqued also. I was very meticulous so I thought.
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Senior User
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Yeah, I can't think of any reason why that would happen either. So you got the Tugger & only did the accumulator? If you put in the entire Tugger kit, you have to pull all the bodies off. I did it all except above that main plate. I couldn't get the solenoid pack off, and didn't want to break it.
Aside from the reverse issue, how is the shifting? You might have to get custom tuning to match up with the kit. Before that, we need to figure out why your reverse is jacked up obviously.
Aside from the reverse issue, how is the shifting? You might have to get custom tuning to match up with the kit. Before that, we need to figure out why your reverse is jacked up obviously.
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Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
There is no tuning required with a Transgo mod. It tunes the trans manually. The slipping reverse tells me something went awry during the mod or the fluid is not where it should be as long as it worked properly before the mod. It was working fine before right? The Transgo will not repair a faulty tranny. Sorry, have to ask these things to be sure.
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Thread Starter
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Senior User
Joined: Dec 2002
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There is no tuning required with a Transgo mod. It tunes the trans manually. The slipping reverse tells me something went awry during the mod or the fluid is not where it should be as long as it worked properly before the mod. It was working fine before right? The Transgo will not repair a faulty tranny. Sorry, have to ask these things to be sure.
Hotshot
Joined: Jul 2003
Posts: 12,177
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From: Newport, WA
There is no tuning required with a Transgo mod. It tunes the trans manually. The slipping reverse tells me something went awry during the mod or the fluid is not where it should be as long as it worked properly before the mod. It was working fine before right? The Transgo will not repair a faulty tranny. Sorry, have to ask these things to be sure.
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Senior User
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ok solonoid pack and accumalator body is in now and torqued at 70 inch pounds. Couldnt find the torque anywhere. I am kind of dissappointed with the quality of the transgo kit instructions and the video, just my .02. Getting ready to go put the pan up and fill with fluid again.
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Ok, i found the problem! Hopefully this will help someone in the future that has a reverse problem after the tugger install. The problem was that I had previously installed the Diablo accumulator line modulation valve. I didnt have the stock ford line pressure mod valve anymore so step 4 on Pg 3 I just didnt install the blue spring this time and put the stock springs back in and my Diablo Line mod valve back in. I also drilled out the calibration plate holes out to: 1st .108, 2nd .95, 3rd .108 . It shifts good now but a little soft going into 4th. I am hopeing my DP Tuner install will fix that. I got tugger tunes from Clay just need to install my tuner.
Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
The Transgo kits can cause hard shifts with tuning sometimes, depending on how aggressive you got with the shift kit and how your tunes were written. Jody recommends a re-burn if you install a Transgo kit after getting tunes to keep the shifts the way you want them.