Strange clicking noise from trans area in reverse but only when moving.

[Ascension]

Engages quickly even cold, shifts normally but has a clicking sound in Reverse. Only does it when the car is moving and is definitely changing frequency related to speed.
Trans has been regularly serviced since i have owned the car and is running real Dex II. The pan was pretty clean last time it was dropped under 10 K ago so??

 

[Joncf]

That’s the classic symptom of the worn 722.3 reverse clutches. They wear down and then the piston hits the 3rd gear clutch drum when reverse is engaged. If this is the problem, you WILL lose reverse eventually.

The transmission must be removed to repair it, but some people live with the issue for a while without it getting considerably worse. Unfortunately, I believe this is common even on well maintain transmissions.

 

[gerryvz]

@Joncf is 100% correct. I've been living with this problem for probably about 10 years.

Also accompanied by increasing amounts of time required to shift into reverse. A well-operating transmission will shift into reverse in a quarter second or so. When your transmission is taking more than two seconds (one-thousand-one....one-thousand-two...one....) then you are very definitely living on borrowed time.

 

[Ascension]

Thought this may be the case. Will plan accordingly an see if there is a solid local builder. Would build it myself if I had a place to work and the proper tools as many moons ago was a trans builder. These should be pretty straight forward to build but look to be a real PITA to R&R!!

 

[Gmach]

I had the same issue that I thought I would allow to persist but I lost reverse completely about a month after symptoms appeared.
And of course it failed in a parking lot that I had faced into an opposing car....on a slight downhill gradient.
When we dropped the pan it was full of metal that turned out to be bits of a small spring..... from the the clutch.
So, get it fixed....sooner than later and before Murphy discovers your exposure....and he (she) WILL !

 

[gerryvz]

I do try to baby my car and pull it forward into parking places, or back into spaces (or my garage). I've accepted that it will fail someday, and when it does, there's going to the be the MOAH (Mother of All HOW-TOs) as to tearing down and fixing a 722.365/370.

The TTR (time-to-reverse) seems to go down a bit on my car, when the transmission/fluid are fully warmed up.

 

[Joncf]

I've accepted that it will fail someday, and when it does, there's going to the be the MOAH (Mother of All HOW-TOs) as to tearing down and fixing a 722.365/370.

I hate to say this.. but I can’t wait for that to happen!

 

[Klink]

Thought this may be the case. Will plan accordingly an see if there is a solid local builder. Would build it myself if I had a place to work and the proper tools as many moons ago was a trans builder. These should be pretty straight forward to build but look to be a real PITA to R&R!!

These transmissions are pretty straightforward. You are correct in that R&R will be the biggest PITA without equipment.