j-speedracer

'99 automatic civic shift with an ecu or tcu?

My wife's '99 civic automatic has started slipping when taking off at over 50%throttle. I'm starting to think its not downshifting into first when coming to a stop and its taking off out of 2nd causing the slip.

I changed the fluid with Honda fluid last summer and shifts got better but the slipping started a few months ago. Fluid looks good still.

Talking with my mehanic he thinks its a faulty computer causing the improper downshifts.

Doing some research older civics run a TCU (transmission control unit) along with the ECU. Looking at my wifes car there's only an ECU down by the passenger kickpanel.

Is the TCU located somewhere else on the car or is the shifting intelligence built into the ECU for the '99 civics?

You think a new ECU would fix the problem or would it be something like solenoids or tps?

Thanks in advance!

j-speedracer

i still havent found an answer to this. called the local dealer and they didnt even seem sure of themselves...