"M&D" <debmar@eglr.net> wrote in message
news:11rr7vrld8k4e63@corp.supernews.com...
> Thanks....I'll price one...Is it inside the transmission ?.

No, the transmission control unit is similar to the ECU and is normally
mounted in the passenger compartment. Dunno exactly where in the Prelude,
though. Wrecking yards are often good sources of ECUs and TCUs. A good price
is on the low side of $100 US, with a 30 day warranty... enough to determine
whether it is working right. If it makes it for 30 days it should last the
life of the car.

I agree it sounds more like the TCU than the tranny - it's just doing what
the TCU tells it to do.

Mike

> "High Tech Misfit" <me@privacy.net> wrote in message
> newsan.2006.01.03.00.45.12.834605@hightech.misfi t...
>> M&D wrote:
>>
>> > I have an 89 prelude si with an automatic transmission that will not
> shift
>> > into third.....while it is cold it won't shift past second
>> > gear,...after
> it
>> > warms it shifts directly into fourth from second....will it require a
>> > teardown to fix?...
>>
>> I'm not sure about that version of Prelude, but on some 4th-gen Accords
>> (1990-93), those are symptoms of a failing tranny control unit (TCU).
>> The
>> tranny itself is usually OK.
>
>