hi,
i have a aw71 with about 241k miles 94 940, on a trip back in texas, where the internet speeds are 75 mph, i sped at 85-90 mph for at least 100 miles, also, did the same couple of days earlier on the way to my destination.

mobil 1 fluid had about 25k miles.

tranny 4th gear failed after i pulled over for a short stop home.

got a tranny green book, which states these problems:
1. dirt in the governer
2. shift valve 3-4 sticking (in valve body)
3. b0 brakes fault (the overdrive part in tranny)

i replace od switch and relay, each original, replacements work, i can hear them clicking.
i just flushed the tranny with new fluid, no effect.
i doubt dirt is in the governor and the shift valve is sticking.

leaves to overdrive in tranny.

thoughts:
1.
od part is in the front section of tranny bell housing and complete disassembly of tranny not necessary.

i've never worked on a tranny other than oil seal, tail bushing and orings, but i can tackle almost all other projects.

i thought about diassembling the tranny to the od part and replacing the friction pack (3 of them) and reassembling it.

cost: friction packs can be found on ebay for about $50, rabestos or sourced other places

bottom line:
gain experience at rebuilding part of tranny, save bucks, no worry about sourcing another tranny, getting harder to find in houston.

can work on any other tranny in my 3 cars later, too.

drawback:
need any special tools, such as extractor for tranny oil pump?
have instructions, but never worked on tranny.

2.
easiest way is to swap trannies, which i've done before.
i got a spare, 92 aw70 tranny, which could be cleaned up, orings, seal, tail bushing replaced.

buy another aw71 tranny, but shpg included cost $350-550. i can possibly find another aw71 tranny in area, houston, austin, etc. and get it for about
$150-200, maybe.

car runs very well, interior very good, a lot of new parts and upgrades, worth keeping.

all help and advice on trannies much appreciated,

thanks again,
byron golden
86 245
92 245
94 940