Adaptive transmission controls
#1
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Do these cars for a fact have an adaptive transmission control system for the 5hp24? I just got mine running again last night with a new clutch drum and everything is fine, but the downshifts are kind of harsh. I replaced torn o-rings on the A drum piston also. I didnt tear down the whole thing to remove metal chunks. Thanks in advance.
#2
#3
#4
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This is what I was afraid of. Come to think of it, the bump during downshift may have been there before. It's my wife who primarily drives the car.
#5
#6
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I can feel it both ways. Coasting to a stop, I can feel each downshift as a slight bump. Adding throttle at low rpms induces a kickdown and I feel it then too. It seems to kickdown slightly harder while in sport mode. Of course, this could be expected since it is kicking down 2 gears instead of one.
#7
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Boy, I am pulling this out of my rear end but I remembered reading about a valve body issue causing uncommanded pressure spikes.
Never saw anything from Jaguar on this issue but here is a technical bulletin from BMW on the problem. Apparently linked to the A drum physical failure. Same transmission.
Sorry, not BMW but Automatic Transmission Service Group (ATSG) but found it on a BMW forum.
Never saw anything from Jaguar on this issue but here is a technical bulletin from BMW on the problem. Apparently linked to the A drum physical failure. Same transmission.
Sorry, not BMW but Automatic Transmission Service Group (ATSG) but found it on a BMW forum.
Last edited by test point; 01-22-2011 at 08:53 AM. Reason: Correction
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