No forward / backs like a champ!
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5th Wheeling
Joined: May 2002
Posts: 40
Likes: 2
From: USA
No forward / backs like a champ!
2000 Excursion, v10 4x4 220k Miles.....
I pulled up to a red light yesterday engine died. It will start idle and run in neutral. But soon as I put it in drive and lurches and the engine stalls. I can put it in reverse and back up without a problem but unable to go forward.
if I get a rolling start then put it in drive it will run (not well) forward.
Any suggestions? I’m thinking I need to start with the module and fresh fluid (over 100k on current trans fluid).
I pulled up to a red light yesterday engine died. It will start idle and run in neutral. But soon as I put it in drive and lurches and the engine stalls. I can put it in reverse and back up without a problem but unable to go forward.
if I get a rolling start then put it in drive it will run (not well) forward.
Any suggestions? I’m thinking I need to start with the module and fresh fluid (over 100k on current trans fluid).
Moderator
Joined: Jul 2010
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From: Media PA
@Mark Kovalsky has commented on this situation before, but I don't recall what the probable issue was.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
I can't come up with any way the VSS could do this.
It's stalling because the torque converter clutch is stuck on. There is a hydraulic circuit that forces it to unlock in reverse. My two guesses are that either the torque converter clutch solenoid is stuck on, or the torque converter clutch control valve is stuck.
It's stalling because the torque converter clutch is stuck on. There is a hydraulic circuit that forces it to unlock in reverse. My two guesses are that either the torque converter clutch solenoid is stuck on, or the torque converter clutch control valve is stuck.
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5th Wheeling
Joined: May 2002
Posts: 40
Likes: 2
From: USA
Mark. What do I need to replace the module, I can do the work without a problem but there seems be several versions of the part.
Measure resistance maybe? Vin number?
Measure resistance maybe? Vin number?
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Laughing Gas
Joined: May 2011
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From: SoCal
How’s the fluid level? I had a problem like this only mine would stall on reverse. It turned out to be low fluid level.
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
There are two versions of the solenoid body. I assume that's what you mean when you refer to the module. That's where the torque converter clutch solenoid is located. There was one version for the early 1999 trucks, and a second version for later 1999 and newer 4R100s. Your's is the latter.
If that doesn't fix it, the problem is most likely a stuck valve. Unfortunately that valve is in the pump body, so the transmission would need to come out to get to it.
If that doesn't fix it, the problem is most likely a stuck valve. Unfortunately that valve is in the pump body, so the transmission would need to come out to get to it.
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5th Wheeling
Joined: May 2002
Posts: 40
Likes: 2
From: USA
Ok New module/seloniod and no change.
Additional symptom. Runs rough on the low end like it’s missing on several cylinders. I had worked on the MAS before this all went to crap, not sure if there could be s connection.
Ken.
Additional symptom. Runs rough on the low end like it’s missing on several cylinders. I had worked on the MAS before this all went to crap, not sure if there could be s connection.
Ken.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
It wasn't the solenoid body, and having no codes stored means it isn't an electrical problem, so that leaves this:
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