This sound like valve body problem to me... however, alot of people want you
to replace it. Many shop will try to rip you off by saying it will cost you
$2500 to repair it.
Call up Silver Star Transmission listed on mbcoupes.com under part supplier.
They are very friendly folks that I have spoke with... but didn't buy from
I had the same problem. My reverse clutch had disentegrated and was
clogging the valve body causing unrequested downshifts and sticking in
gears. Fluid + Filter change helped for a while, but in my case, the clutch
kept disentegrating and clogged it again. Try a fluid+filter change (make
sure the valve body screens are cleaned too), if you don't go clear sailing,
you've got something amiss in the transmission -- either a clogging or
malfunctioning valve body.
Hope its just a valve body and not the clutches. Valve bodies are a quick
swap. Otherwise yer in for a rebuild.
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