I found some info on this from 12, 13 years ago, but wanted to see if someone has had a successful repair. I noticed that my LX-450 slips in reverse when I have my off-road trailer attached. And, is this a job for a reputable transmission shop or someone like ACC garage. Under normal conditions, with no trailer attached, no slip. In a situation where the trailer is attached and there is some grade, it slips, only in reverse. Does not slip with CD engaged in low.
The old, slipping in reverse under load thread (1 Viewer)
- Thread starter Frank Cloud
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ppc
M Go Blue
Check your drive flanges on the front axle. They could be striped.
Toyota sent out a TSB or two on the topic (A343F transmission chatter reverse), basically has to do with swapping some check balls in the valve bodies in some A343F transmission depending on date of manufacture (note the entire transmission does not need to be dropped or rebuilt).
IIRC a few people have successfully swapped out the check balls
and posted up the process.
Here's one discussion from 2007 you may have already found:
forum.ih8mud.com
Here's a thread discussing the Transgo shift kit with photos:
forum.ih8mud.com
And a source for the kit (double check correct part number):
www.summitracing.com
IIRC a few people have successfully swapped out the check balls
and posted up the process.
Here's one discussion from 2007 you may have already found:
A343F reverse noise
So is this a destructive type of issue? What I mean is if I just wait a few seconds after I shift into reverse for the fluid to make its way through the passages correctly is that good enough or is there going to be damage if the updates aren't installed? Kyon Kyon, Good question...
forum.ih8mud.com
Here's a thread discussing the Transgo shift kit with photos:
A343 Transgo Reprogram Kit Install - 1995-1997
I recently installed a turbo kit on my truck and stock shifts were hurting bad. Very slow, lots of flare, etc. This reprogram kit costs about $100 and is different from the standard shift kit at around $60 because it includes drill bits to machine out the shifting points in the separation...
forum.ih8mud.com
And a source for the kit (double check correct part number):
TransGo Performance 340-HD2 TransGo Performance Shift Kits | Summit Racing
Free Shipping - TransGo Performance Shift Kits with qualifying orders of $109. Shop Automatic Transmission Shift Kits at Summit Racing.
Last edited:
- Thread starter
- #5
I called a Land Cruiser specialist out west and he also suggested to check the drive flanges on the front axel. Not sure why it would be in reverse? He asked if it did it with the CDL engaged. In low, it does not. But in high with the 7 pin mod, it does. Not sure what to think at the moment but will be investigating when time allows.
- Thread starter
- #6
Update: Upon ACC's suggestion, took the LX to Landmark Transmissions in Atlanta. Tranny is currently being rebuilt.
Malleus
Far west of Siegen
Would you care to say what they quoted you?
- Thread starter
- #9
Just an update. Got the tranny rebuilt. All slip has been resolved. Also, I did not realize how much the LX was struggling until I got the transmission done. Now, very smooth and gets up to speed quicker. Also maintains speeds on cruise control without downshifts. Wasn't planning on spending the money because the seller told me it needed absolutely nothing, Nothing except a baseline for oil leaks, power steering pump, panhard bushings, etc. And a tranny rebuild. Paid too much for the rig, but the body and paint is in great condition, now baselined, and etc. Live and learn, but it is NOW what it was represented as at the sale. Great machine.
