Re: Auto Trans is locked up need help
The kickdown in not your problem. I would be more inclined to think the torque converter. Below cerain RPM's (stock is usually about 800), the torque converter acts like a clutch. As the RPM increases, the hydraulic fluid starts to 'couple' to the tranmission gears. If the converter was locked up for some reason, then it would cause the problem your having.
How is the idle? A common problem is to have a bad idle and the result is the same as what you are describing. Try this...adjust you idle down until it stalls...it should be 500 RPM...if you can idle fine there, then it looks like your tranny...if you can't idle down to 500...then you need to fix that.
Let us know what you find.