[camry]

I've had my camry v6 for 2 months now and 2 weeks after purchased it, I noticed that the transmission at 45mph would kickdown rather harshly when I would let off the gas.. The rpms would drop to around 100 and then move to a steady 1200-1300 rpms.. When doing the oil change, I noticed a black box on the left side of the hood with numbers on it like someone swapped one from a junkyard or something... So basically what I am asking is if there is an adjustment for the kickdown and if this black box has something to do with my problem. I'm hoping that the black box has something to do with it and that the previous owner didnt adjust something after replacing the box.. I'll just take it one step at a time... Thanks guys for all your help..

I already done a transmission flush and fill and filter change..

[ajohns315]

It's hard to say what is wrong, atleast for me.

What is your model number? Toyota has some decent online help to problems like these.