i have 1999 toyota camry 2 of them, both stock, one of them has a problem when you push the gas you have you oush it father to get speed then my other camry, for ex. you will have to push half way to 2,000 rpm and on the other one you just push little and it goes
Does the check engine light comes on? If yes, than take it to AutoZone for a free diagnostic. If not might be needing a tune up, Spark plugs, oil,filters, wires. Could be alot of things but i'll start there.