In my 94 TC, I've got the notorious transmission. A year and a half ago, a few months after I bought it, the trans failed and I got a rebuild (not at Aamco!). A few weeks ago, the output speed sensor failed. Thanks to this group, I was able to figure out what the problem probably was, and take it to my local garage.
Now, it's starting to go into limp mode. Occasionally, but the frequency is increasing. Only in the first 5-10 minutes after the engine is started (cold start or warm, not hot, restart). The local garage couldn't replicate the problem.
I haven't had the trans fluid and filter changed since the rebuild, but it hasn't been 2 years or 20K miles. I have driven it up into and in the mountains a lot though, on ski trips.
The rebuild had a 1 year warranty, but none of the trouble happened until after the year was up.
Would it be smart to first try changing the fluid and filter? The transmission shop wants $70 just to read the codes and take a look.
Thanks,
Lisa