4L60E Tranny
Thread Starter
Registered User
Joined: Sep 1999
Posts: 32
From: south bend,in.
4L60E Tranny
Last night while driving I stepped on it, it didn't want to shift until I let up then it shifted. Took off from stop same thing wouldn't shift until I let up the same thru all gears. It has a ls1 swap. Help please I have no idea.
Thks Don
Thks Don
Administrator
Joined: Nov 1998
Posts: 71,086
From: Hell was full so they sent me to NJ
Re: 4L60E Tranny
I went through a case like this several years ago on another site. We investigated every possibility, and 175 posts later turned out it was worn internals:
https://www.firebirdnation.com/threa...-pedal.543001/
Was a 4L60E with an LT1, but the logic should be similar.
https://www.firebirdnation.com/threa...-pedal.543001/
Was a 4L60E with an LT1, but the logic should be similar.
Administrator
Joined: Nov 1998
Posts: 71,086
From: Hell was full so they sent me to NJ
Re: 4L60E Tranny
Could be something other than worn parts.
Unfortunately there is virtually no one here to help any more. Maybe a 1/2-dozen LT1 owners. The LS1 crowd never came here in numbers, they weren’t happy with the Lounge moderation. The site was never updated to seriously cover the 5th Gen, etc. I can help with most of the LT1 issues, but I just don’t know the auto transmission that well. I have a decent understanding of how the PCM controls it, but not the trans internals.
Appears last time you posted was 2011. A lot has changed since then, all for the worse.
I don't have my Formula, sold it earlier this year. Rob/Shoebox sold his Z28 a while back.
Unfortunately there is virtually no one here to help any more. Maybe a 1/2-dozen LT1 owners. The LS1 crowd never came here in numbers, they weren’t happy with the Lounge moderation. The site was never updated to seriously cover the 5th Gen, etc. I can help with most of the LT1 issues, but I just don’t know the auto transmission that well. I have a decent understanding of how the PCM controls it, but not the trans internals.
Appears last time you posted was 2011. A lot has changed since then, all for the worse.
I don't have my Formula, sold it earlier this year. Rob/Shoebox sold his Z28 a while back.
Prominent Member
Joined: Jul 2010
Posts: 1,519
From: Born on the Florida West Coast, now where can I retire?
Re: 4L60E Tranny
Have the transmission fluid flushed out and replaced. But that may not help at all. The problem is worn valves in the transmission get more pressure in acceleration and can jam. Letting up causes the valve to move. Rebuild or replacement is in order. Other than that, maybe a faulty connector that moves during acceleration or deceleration but that should cause a code and is unlikely.
Thread Starter
Registered User
Joined: Sep 1999
Posts: 32
From: south bend,in.
Re: 4L60E Tranny
Thank you for the replies I appreciate it. I really didn't post much just about anything I had problems with somebody else had and already been answered so just had to search. Sucks about site it helped a lot. Have a good day. Don
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