I have a "1999" toyota camry that on the way to work yesterday had the engine begin racing and the brakes were barely able to stop it. i had to put the vehicle in park while the engine continued to race. i got out and checked floor mats and worked the gas pedal by hand and the engine continued to race. i shut off the engine and tried restarting it and the engine immediately began racing again. i managed to move it off the road and into a gas station and had someone from inside come out just to witness it as i couldn't believe it was happening. i opened the hood and manually worked what i call the throttle control and was able to rotate in but the engine continued to race. only turning the engine off would stop the racing. i repeated these steps at least 3 times and upon the last engine start up the engine idled normally. i had driven for a short time before and i feel certain that the speed control was controlling the speed until i took it off. at first thought my brakes were bad as they weren't stopping the car well. then i noticed it was actually accelerating on it's on. i understand this was not supposed to happen on this year of vehicle and that is what the local service people told me when i called them. however, i am very wary that there is an electronic aspect to the problem and even if it is some other problem known or not known to toyota it is a very dangerous problem to have and never to have known about myself. *tr
This seem to be a common problem to 1999 toyota camry. isc valve just die off for no reason and no signs of any broken . car can not be started when this valve is defected. even if car can be started, it will be very shakey. dt