4r100 converter locks only when od off!
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Cargo Master
Joined: Mar 2019
Posts: 2,907
Likes: 788
From: Kinnula,Finland
4r100 converter locks only when od off!
2000 e350 pcm code RCU0 with Hydra chip
Shifts fine and pulls like a train!
No blinking od light.
Cruise and brake lights fine.
Confirmed with ForScan that tcc will apply 100%.
It locks and no slipping when od off but in overdrive lock does not hold.
Converter is new triple clutch with extra low stall.
Tranny rebuilded couple years ago with sure cure kit.
Stock converter lockup was slipping only when pushed.
I have issue that pcm voltage is somehow reading something between 7-16v..
Obd port reads voltage correct.
No pcm voltage issue when stock converter slipped.
New batteries and operating voltage is normal,but pcm reads voltage incorrectly.
Tried to search for converter locks only when od off/third,no results..
Tune line pressures?
Pcm toast?
HELP!
Shifts fine and pulls like a train!
No blinking od light.
Cruise and brake lights fine.
Confirmed with ForScan that tcc will apply 100%.
It locks and no slipping when od off but in overdrive lock does not hold.
Converter is new triple clutch with extra low stall.
Tranny rebuilded couple years ago with sure cure kit.
Stock converter lockup was slipping only when pushed.
I have issue that pcm voltage is somehow reading something between 7-16v..
Obd port reads voltage correct.
No pcm voltage issue when stock converter slipped.
New batteries and operating voltage is normal,but pcm reads voltage incorrectly.
Tried to search for converter locks only when od off/third,no results..
Tune line pressures?
Pcm toast?
HELP!
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
Sorry bud.
Anytime I have a fault like this I deprogram and start fresh. If it bounces right back, drive on the problem. If it clears.........easy fix. Question is, if it returns a pulled code will say wonders.
BTW, when the guru's pulled your trans apart, did they re-torque your VB feed bolts. I've seen alot of posts, not identical to yours, but close where the VB was torqued to spec, but the feedbolts were ignored. See what ya see.
Make sure your fuse panel area under the dash is dry as well as the firewall and north above that location. If your taking on water thru your wind screen. It will do a chaotic dance with the electronic components. Look for wet carpet.
Denny Good luck!!
Anytime I have a fault like this I deprogram and start fresh. If it bounces right back, drive on the problem. If it clears.........easy fix. Question is, if it returns a pulled code will say wonders.
BTW, when the guru's pulled your trans apart, did they re-torque your VB feed bolts. I've seen alot of posts, not identical to yours, but close where the VB was torqued to spec, but the feedbolts were ignored. See what ya see.
Make sure your fuse panel area under the dash is dry as well as the firewall and north above that location. If your taking on water thru your wind screen. It will do a chaotic dance with the electronic components. Look for wet carpet.
Denny Good luck!!
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
https://www.ford-trucks.com/forums/1...ch-thread.html
We have a member who designed your transmission. He definitely sits up in the balcony. (In this forum).
This is an older link I found. Hope it explains things as I haven't opened it (my dinner is on the bbq) .
Mark is a beloved member and the solver of all trans woes. He won't spin a wrench, but he'll tell you a course to steer.
I'm eating and falling in! GL
Denny
We have a member who designed your transmission. He definitely sits up in the balcony. (In this forum).
This is an older link I found. Hope it explains things as I haven't opened it (my dinner is on the bbq) .
Mark is a beloved member and the solver of all trans woes. He won't spin a wrench, but he'll tell you a course to steer.
I'm eating and falling in! GL
Denny
FTE-Spread The Knowledge
Joined: Feb 2008
Posts: 2,285
Likes: 240
Dorian is a very serious storm that may Mark’s response delayed. Everyone in the state is extremely concerned.
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Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
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Got Data?
Joined: Dec 2012
Posts: 4,251
Likes: 1,382
From: Lake Stevens, WA
Here's a thread that might be similar - on the older E4OD.
https://www.ford-trucks.com/forums/1...nued-halp.html
This guy had a weak pump - not enough pressure to hold lockup in OD
https://www.ford-trucks.com/forums/1...nued-halp.html
This guy had a weak pump - not enough pressure to hold lockup in OD
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
https://www.ford-trucks.com/forums/1...ch-thread.html
We have a member who designed your transmission. He definitely sits up in the balcony. (In this forum).
We have a member who designed your transmission. He definitely sits up in the balcony. (In this forum).
The first thing to do is to check for codes. Even if the OD light isn't flashing there could be codes that would help.
Thread Starter
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Cargo Master
Joined: Mar 2019
Posts: 2,907
Likes: 788
From: Kinnula,Finland
Fixed!
Fix was...There was no fix.
It was part of the pcm "learning" after new batteries and starter.
Finally after driving with chip in stock position like without shoes=sukkasillaan in finnish
,i mean sooo easy in the skinny pedal..It started to use lock also on OD!
Had some hesitation on lockup PWM in Extreme tune but seems to lock correctly for now..
Was jump started multiple times with old batteries,maybe that made pcm confused..?
Before it has "learned" how to shift and lock in about 10 miles..
Still have condition that pcm sees low voltage,only 8volts last trip..
It was part of the pcm "learning" after new batteries and starter.
Finally after driving with chip in stock position like without shoes=sukkasillaan in finnish
,i mean sooo easy in the skinny pedal..It started to use lock also on OD!Had some hesitation on lockup PWM in Extreme tune but seems to lock correctly for now..
Was jump started multiple times with old batteries,maybe that made pcm confused..?
Before it has "learned" how to shift and lock in about 10 miles..
Still have condition that pcm sees low voltage,only 8volts last trip..
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