4r100 Tcc problem
Thread Starter
|
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
4r100 Tcc problem
Hey guys, I have a f150 2002 with a 5.4 and 4r100 (yes im sure), and a week ago my torque converter started getting stock (locked) when i came to a stop making the engine stall (it took a couple of minutes before my engine got warmed up). I checked the codes and got 0740 and 0743 which relate to the tcc solenoid malfunctioning. To make sure the tc wasn't physically stuck y cut the purple wire that signals the solenoid to lock the converter, the truck ran fine and as expected the tcc never locked, so I thought I norrowed it down to the solenoid pack, which i bought (300 bucks ouch) and changed it yesterday. Today again the same thing started happening and the truck is throwing me the same codes, so im a bit frustrated. I don't wanna go ahead and buy a torque converter without knowing the real cause, any ideas of what could it be? I didnt see any melted wires down there but could my long tubes be shorting that wire out randomly in an unseen place? or could my tc be bad?
Thanx in advance
Thanx in advance
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
If the torque converter were bad cutting the wire wouldn't make any difference. Since cutting the wire solved the problem the problem is in the wire or the PCM. If it is the wire the problem is located between the PCM and where you cut the wire.
Thread Starter
|
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
Yep I needed confirmation, thats what i thought, Im gonna retrace the wire back to the pcm, if the wire is good then the pcm i failing i guess, and i will try a mod a read a while back of manually locking the tc with a switch, Ill post my results
thanx
thanx
Thread Starter
|
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
Trending Topics
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
Thread
Thread Starter
Forum
Replies
Last Post
mototrig
1999 - 2003 7.3L Power Stroke Diesel
23
Mar 8, 2014 10:39 AM
