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460le

This is a discussion on 460le within the Automatic Transmission forums, part of the Drivetrain category; I have an automatic that slips when cold and hot, are there any adjustments I can do, such as band ...

  1. #1
    TimRandich
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    460le

    I have an automatic that slips when cold and hot, are there any adjustments I can do, such as band adjustment, or any additives that might help.

    This is my first post, please don't ignore me...

  2. #2
    Member performabuilt's Avatar
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    4l60e that slips

    if the transmission seems to work ok other than that and the fuild is not burt excessivly , I would try replacing the (pcs)preasure contol solinoid first,

    performabuilt

  3. #3
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    Is your SES light on? If it's slipping should be throwing a code.

  4. #4
    Member performabuilt's Avatar
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    Actually It might not set a code in lower gears since the pcm allows fo converter slip and the 4l60e only looks at engine rpm and output speed, Also it will not set a code for pcs either unless its electrically faulty, The pcm has no feedback from the pcs for a mechanical fault , Now it theres excessive slipage in 4th with lockup converter engaged you may get code 1870 (componet slipping).I would suggest changing fluild and turn the preasure up a little as i mentioned earlier and then start looking for a transmission,

    performabuilt

  5. #5
    TimRandich
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    Thanks for the replies, I have recently changed the fluid and noticed black residue on the bottom of the pan., Looked like rubber and wiped off easily. The fluid is good. No Codes and I do not have an SES light. The Shift from 1st to 2nd is now harsher than it was at light throttle.

    Can I adjust the bands or add an additive to get it back to normal?

  6. #6
    Member performabuilt's Avatar
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    I would change the pcs as i suggested earlier , additives make little or no diference
    Last edited by mrr23; 11-26-2006 at 06:12 PM. Reason: removed link to website. contact ed blown vert for sponsor information.

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