torque converter question
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Senior User
Joined: Sep 2006
Posts: 247
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From: NC
torque converter question
Hi, I have a friend with a 99 f350. It has a western diesel package on it, so I really don't know how many mods that is involved with that. The problem is that the TC locks and unlocks at various times over and over. He replaced the TC and it still occurs.
Has anyone ever had anything like this happen?
He has also had the solenoid pack changed as well. The tranny shop is just trying different things to try and get it to work correctly, but as we all know the $$ are adding up.
He has also added some Banks mods to the truck as well. Waste gate, chip, etc.
Any help would be appreciated.
Has anyone ever had anything like this happen?
He has also had the solenoid pack changed as well. The tranny shop is just trying different things to try and get it to work correctly, but as we all know the $$ are adding up.
He has also added some Banks mods to the truck as well. Waste gate, chip, etc.
Any help would be appreciated.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,732
Likes: 2,661
From: SE Florida
A burned out brake light bulb can do that. It can be in either side or the center light. It could also be a bad brake switch. As he found out it is not a problem with the torque converter. The chip is another possibility.
Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
No more errtic shifting, no early lock up, and the knocking that I was worried about being the #8 injector, or worse being that the knocking would still be present when the injectors shut down all disapeared, and it runs like never before.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
A friends truck (02F-350) does similar,but only when O/D is locked out and loaded.Seems the heavier the load the worse it gets.Seems to start at about 50MPH
Once in O/D it is fine
BTW:He runs a Superchips programmer
Once in O/D it is fine
BTW:He runs a Superchips programmer
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From: Central Coast of CA
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,732
Likes: 2,661
From: SE Florida
The PCM monitors the brake light circuit to unlock the converter when the brakes are on. Somehow it is fooled when a bulb is burned out. I don't know how, but I've seen it happen.
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Joe Kucinski
Senior User
Joined: Mar 2004
Posts: 137
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From: Illinois
there must be a delay then. My TC stays locked up when I apply my brakes until I get to a certain speed/rpm
Postmaster
Joined: Jun 2006
Posts: 2,647
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From: Fulltime RVer
You've got the "stupid" version of the PCM program!
