Help me understand auto trans shifting..
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Mountain Pass
Joined: Oct 2019
Posts: 163
Likes: 44
Help me understand auto trans shifting..
Put a transgo tugger kit in. Gotta pull plate and make some holes smaller as shifts are a bit aggressive. I've already had tuner pull as much pressure as possible through tuning.
Question is.. under light throttle it shifts 2, 3, lockup, 4 and all shifts a pretty good.
Under medium to heavy throttle it shifts 2, lockup, 3 , 4 and the 3 shift slams and is very aggressive. Is that because once converter locks there is more pressure all of a sudden going to the 3 shift?
Question is.. under light throttle it shifts 2, 3, lockup, 4 and all shifts a pretty good.
Under medium to heavy throttle it shifts 2, lockup, 3 , 4 and the 3 shift slams and is very aggressive. Is that because once converter locks there is more pressure all of a sudden going to the 3 shift?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
It slams because the converter is locked. When the converter is unlocked, it will absorb the feel of a harsh shift. A locked converter will transfer the feel right to the truck. The shift is harsh locked or unlocked, but you'll only feel it locked.
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Mountain Pass
Joined: Oct 2019
Posts: 163
Likes: 44
Ah, makes sense. So would it be better to reduce the 3 shift by making hole smaller in plate? Or have tuning changed so it only locks converter after the 3 shift?
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