Torque converter questions
Thread Starter
|
Laughing Gas
Joined: Jan 2005
Posts: 920
Likes: 7
From: Mazon, IL
Torque converter questions
I've been having a slight shudder for the past couple of months. Only at low RPMs under load. Once I get to arount 2000 RPM it's fine. Shifts normally, temps staying normal. So, I'm assuming it's the TC getting ready to go. I also know that if it goes, it's gonna take the rest of the trans with it. Here's my dilemma. I'm broke as hell right now, so I'm gonna have to do the replacement myself and going to have to spend as little as possible on the new TC. Any opinions on what and where to get what I need? I run a DP tuner, usually on the 80HP econ setting. I need it to hold up, but also not break me. Thanks for any advice
Hotshot
Joined: Dec 2012
Posts: 11,269
Likes: 1,654
From: Las Cruces New Mexico
I bought a Torco triple disc low stall torque converter thru ebay and has worked great, I paid at the $259 it went up to $300 but well worth it.heres a link.
https://www.ebay.com/itm/Ford-E4OD-4...kAAOSwxYxU1A5o
https://www.ebay.com/itm/Ford-E4OD-4...kAAOSwxYxU1A5o
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,640
From: SE Florida
I doubt that you have a torque converter problem. I think you have an engine miss.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
At any point in the throttle, you can have a slight imbalance between load and fuel applied - this is common in aftermarket tunes. When this happens, you get slight "hiccups", and cause no real harm to my knowledge. When I've had this issue, I've had the tuning adjusted to fix it.
Thread Starter
|
Laughing Gas
Joined: Jan 2005
Posts: 920
Likes: 7
From: Mazon, IL
Yeah, I spent the whole day researching it all yesterday, then hooked u the AE. looks like it just may be an injector issue. Got 1, 3, and 8 sitting high on the Perdels and codes for 3 and 8. Got a new CPS coming from Riffraff as well as new injector o-rings and will be ohming out the injectors tonight to start with. I bought a used set from a guy a few months ago that came off of a wrecked 84K truck. So will probably end up swapping them out over the weekend. Also ordered an adapter so I can do a compression test while it's apart. Will either give me peace of mind, or really get me stressed. LOL.
Thread Starter
|
Laughing Gas
Joined: Jan 2005
Posts: 920
Likes: 7
From: Mazon, IL
Well, I'm assuming that to ohm the injectors, that I'm just checking across the "high voltage" pin and each injector. They are all close. Drivers side all 1.973 and passenger side 1.971. So from what I read, I want them to not only be close, but also close to 3 ohms they all seem far off. Probably should start a new thread for this. Dammit
Trending Topics
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I have links in my signature that help out. I remember the term now... "bucking". Does the engine feel like a series of "kicks" at low rpms up a slight grade? That would be bucking, and it's a tuning thing. Before grabbing anything bigger than a 10mm flex socket, I would pull the chip to see if that eliminates the "shudder" or bucking.
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
2nd Gear
Joined: Jul 2022
Posts: 2
Likes: 0
I also run a DP tuner on my 2003 E350 7.3L 4x4 PSD.
Only recently has it been “bucking” in the lower RPM’s at exactly 40mph and 55mph in all tunes other than “Modified Stock.” Modified stock there’s no “bucking.”
Maybe 1000 miles after that I started getting the TC hunting, which I can visibly see happen on my CTS3, even if Im in the “Modified Stock” tune.
Observations are:
-Bucking slowly started happening over time (assuming tunes don’t go bad over time..?)
-TC lockup hunting started a bit after that
-TC, Trans, diff only 5k miles old
Questions:
-What do I look for on ForScan for TC slipping? Other data to condider?
-Other realistic sensors or things to consider with my situation?
-Why would hunting damage the trans?
-How to tell if it’s the TC, Injectors, or Trans?
I can upload TC data here.
Only recently has it been “bucking” in the lower RPM’s at exactly 40mph and 55mph in all tunes other than “Modified Stock.” Modified stock there’s no “bucking.”
Maybe 1000 miles after that I started getting the TC hunting, which I can visibly see happen on my CTS3, even if Im in the “Modified Stock” tune.
Observations are:
-Bucking slowly started happening over time (assuming tunes don’t go bad over time..?)
-TC lockup hunting started a bit after that
-TC, Trans, diff only 5k miles old
Questions:
-What do I look for on ForScan for TC slipping? Other data to condider?
-Other realistic sensors or things to consider with my situation?
-Why would hunting damage the trans?
-How to tell if it’s the TC, Injectors, or Trans?
I can upload TC data here.
Thread
Thread Starter
Forum
Replies
Last Post
alstieg
1999 - 2003 7.3L Power Stroke Diesel
3
Apr 4, 2009 10:28 PM
Goodold71
Clutch, Transmission, Differential, Axle & Transfer Case
2
Sep 11, 2008 08:35 PM
Busa01
Performance & General Engine Building
27
Oct 9, 2003 08:51 PM