i have a 91 toyota mr2 non turbo. occasionaly when i come to a stop the engine will rev and then slow down repeatedly. if i hit the gas pedal it will stop doing this. this might happen only once or several times during my drive time. it has a new fuel pump,filter and strainer and a new air idle control valve. help…
There is a switch on the throttle that signals the computer to take control of the idle. It is likely faulty.
The previous thread you started on this problem, along with my reply on how to fix it, is here:
(post a pic of your car!)