4r100 issue
Fleet Mechanic
Joined: Apr 2019
Posts: 1,734
Likes: 653
From: South AR
he's out of buisness he's been sued and literally owes at least 10 ppl over 10k for full bullit builds he never delivered as well as numerous warranty returns repairs. He was supposedly a top builder for a while then went to ****. He was reccomended by Matt Maier and others apparantly did put out goid trannys for a while had a good write up in diesel world mag. Preformed well in competitions but apparantly decided to screw everyone.
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
I don't know what you're feeling at 55-60 but MK is the most knowledgeable guy we have on these transmissions. There is no gear after 4th and mine will drop into 4th at around 40-45 under normal driving conditions.
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New User
Joined: Jul 2021
Posts: 8
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I'm not trying to argue just learn. From a dead stop their is a shift around 15mph one at 30 one at 40 to 45 then what I call overdrive at 55 to 60 the last one is the intermittent one.
Lead Driver
Joined: Jul 2017
Posts: 6,846
Likes: 2,326
From: WV
Mark is correct (of course, just reiterating to the OP). The 5th ‘shift’ are feeling is the torque converter locking up. There is a clutch in the TC that engages and reduces TC slip to zero. Lockup is very pronounced in our trucks and feels like a shift.
Like he said, monitor gears and TC LU to see which you are having issues with.
Like he said, monitor gears and TC LU to see which you are having issues with.
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New User
Joined: Jul 2021
Posts: 8
Likes: 0
Mark is correct (of course, just reiterating to the OP). The 5th ‘shift’ are feeling is the torque converter locking up. There is a clutch in the TC that engages and reduces TC slip to zero. Lockup is very pronounced in our trucks and feels like a shift.
Like he said, monitor gears and TC LU to see which you are having issues with.
Like he said, monitor gears and TC LU to see which you are having issues with.
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