4L60E tranny problem

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Feb 10, 2011 | 05:05 PM

Strick

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From: Lake Wylie SC

4L60E tranny problem

It only works in 1st, 2nd, and reverse. What happened? Is it the 2-3 upshift servo? It has almost 200 K on it and we're ready to pull it out and rebuild it. What are some good upgrade parts to put in it? Thanks

Feb 10, 2011 | 08:18 PM

Sandpiper59

Racer

Joined: Nov 2010

Posts: 460

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From: Oliphant Ontario

Not that I can help a whole lot, never tore down an auto, but, you will be asked anyway..
What does it do? Meaning does it slip in 3rd or OD or refuse to go into those gears and just stays in 2nd. What car is it in? In an E transmission the computer tells it when to shift and you should be able to log the ECM and see the shift requests..

Last edited by Sandpiper59; Feb 10, 2011 at 08:19 PM. Reason: typo

Feb 10, 2011 | 08:45 PM

bwiencek

Racer

Joined: Jul 2010

Posts: 308

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From: Kansas City MO

I'd hazzard to guess you've stripped / broke your sun shell. It's a typical 700R4/4l60E failure point.

Feb 11, 2011 | 12:37 AM

coupeguy2001

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Joined: Sep 2006

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From: Phoenix AZ

2021 C4 of the Year - Modified Finalist

Could even be a solenoid...........or a broken wire

Feb 11, 2011 | 12:49 AM

M. Schumacher

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Joined: Jun 2008

Posts: 610

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Quote:

Originally Posted by Strick

The 3-4 clutch pack is a likely culprit.

Check out the rebuild kits on the below site. I used the street/strip one when I rebuilt mine.

https://www.700r4l60e.com/store/home.php?cat=22

Feb 11, 2011 | 06:00 PM

Strick

Thread Starter

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From: Lake Wylie SC

Thanks guys. I found a really good thread on rebuilding a 700 which lead me to many links which just about answered all my questions.

Feb 12, 2011 | 09:36 AM

twin540

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Joined: Feb 2007

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From: San Antonio TX

Quote:

Originally Posted by coupeguy2001

Could even be a solenoid...........or a broken wire

Feb 14, 2011 | 11:26 AM

Strick

Thread Starter

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Joined: Feb 2003

Posts: 11,671

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From: Lake Wylie SC

I have found out that 9 times out of 10 the solenoids are not the problem. It's probably the 3-4 clutch pack. Mad Dog Transmission and Monster Transmissions seem to have a good handle on these 4L60E trannys. All the upgrades included.