In my 1994 Del Sol Si automatic, it sometimes won't shift out of 2nd gear upon starting from park. Usually when I start moving it makes this scrape sound and will shift, but other time it'll stick in 2nd and make a high pitched sound as it revvs up to high rpms. Usually when it does this, if I make a complete stop and sit for a second and start going again, it'll make the scrape sound and start shifting, but other times it doesn't. It's harder to make it start shifting when I have to first back up like down a driveway or out of a parking space. I'm thinking it's not the transmission itself, because when it does shift, it shifts really cleanly. Perfect fluid level, tested the upper shift/lock up solenoids, they work. What could be causing this? Is there another solenoid to test or is it a problem with the TCU? Please help!

 

did you check for fault codes ???

 

I did not. I didn't think it would be giving any codes, since I don't have any check lights on. Today, it started to not shift at all and when I tried to manually shift it, by going down to the 1 gear, it was just revving up and wouldn't lock fully into the gear.