i have a 2000 celica gts with 42000 miles on it. lately when i start the car, put it into 1st gear and push down the gas to go, there was a slight hesitation. would have to give it more gas because it seemed like it would want to stall. but after reading some reviews on cleaning the maf air flow sensor, i went out to autozone and got some electronic connection cleaner/degreaser. everything from startup to idle my engine is performing so nice and in tune. just wanted to say thanks for those that had input into the tip.