Torque converter lockup
Thread Starter
|
Mountain Pass
Joined: Feb 2020
Posts: 101
Likes: 7
Torque converter lockup
So long story short I have a 97 crew cab dually 7.3 with the e4od. The old transmission went out so I put a new one in it and it’s been working good except for my torque converter lockup. The transmission came with a new heavy duty torque converter too. I’ve got several thousand miles on the transmission so it’s been broken in but I’ve had problems. It was going into limp mode after I shut it off and started it back up on hot days and anyways I think it ended up being the tone ring and vss sensor but that’s another story. But my torque converter has always locked up at 30 mph on the dot no matter where I’m at in the throttle. If I lay into it the truck will hit third around 28 mph then immediately slam into lockup. It throws no codes and really isn’t unbearable to drive it’s just nowhere near as smooth as the other gears. Even under light throttle it jerks the truck a little bit. Is this normal for a heavy duty torque converter or is something else giving me problems
Tuned
Joined: May 2021
Posts: 294
Likes: 81
From: Wichita, KS
Do you have the TS6 - 6 position switch? Or a tuner of another fashion? If you do unless custom tuned, it will change your trans pressure, causing it to lock early like that - I had that issue on mine until I pull the TS6 out, now depending on the tune on where it locks. It was dropping early 2nd gear, you'd just start building power and lose everything because TC locked, not a fun deal
Thread Starter
|
Mountain Pass
Joined: Feb 2020
Posts: 101
Likes: 7
Do you have the TS6 - 6 position switch? Or a tuner of another fashion? If you do unless custom tuned, it will change your trans pressure, causing it to lock early like that - I had that issue on mine until I pull the TS6 out, now depending on the tune on where it locks. It was dropping early 2nd gear, you'd just start building power and lose everything because TC locked, not a fun deal
Tuned
Joined: May 2021
Posts: 294
Likes: 81
From: Wichita, KS
Fairly sure that Mark above knows more about the transmission than I do - so I'm sure what he's saying is probably accurate considering his credentials his signature.
that was just my experience on mine, couldn't figure out what was going it was a nightmare to be pulling a trailer and lose all power because TC locked. It's good to know yours is locking in the right spot though, it should lock at a different spot when you're really in it or as far as I remember anyway.
I definitely understand how it can be bothersome when it locks hard - hopefully you can cope, replacing those isn't cheap
that was just my experience on mine, couldn't figure out what was going it was a nightmare to be pulling a trailer and lose all power because TC locked. It's good to know yours is locking in the right spot though, it should lock at a different spot when you're really in it or as far as I remember anyway.
I definitely understand how it can be bothersome when it locks hard - hopefully you can cope, replacing those isn't cheap
Fleet Owner
Joined: Aug 2004
Posts: 20,419
Likes: 197
From: AZ
Trending Topics
Thread Starter
|
Mountain Pass
Joined: Feb 2020
Posts: 101
Likes: 7
thanks for the help guys. It’s eventually getting a ts6 but I’ll have it professionally installed. I don’t want to risk trashing the computer myself
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Thread Starter
|
Mountain Pass
Joined: Feb 2020
Posts: 101
Likes: 7
so with the ts6 do I have to buy it with that tune already in or can I buy a blank one and tell a shop what I want? Or should I just take my truck to a shop and tell them what I want and let them buy the tuner
Thread
Thread Starter
Forum
Replies
Last Post
drewmgd73
1994.5 - 1997 7.3L Power Stroke Diesel
1
Mar 9, 2010 01:06 AM