I recently purchased an 87 4runner 22re turbo. I am having problems with the timimg or idle screw on the intake. (Is that what it's called?) I would set the idle so the engine will run fine. But after a while on the freeway the screw will turn back counter clockwise.I am guessing due to the vibration of the engine. To the point where the engine will bog down and die as soon as I come to the first stop. Then I have to get out pop the hood and adjust it again so it will start up again. After it is adjusted it runs fine. For a while then the whole cycle repeats itself. Is it missing some sort of pin or safety wire to keep it from turning? Thanks...........

I recently purchased an 87 4runner 22re turbo. I am having problems with the timimg or idle screw on the intake. (Is that what it's called?) I would set the idle so the engine will run fine. But after a while on the freeway the screw will turn back counter clockwise.I am guessing due to the vibration of the engine. To the point where the engine will bog down and die as soon as I come to the first stop. Then I have to get out pop the hood and adjust it again so it will start up again. After it is adjusted it runs fine. For a while then the whole cycle repeats itself. Is it missing some sort of pin or safety wire to keep it from turning? Thanks...........

is the screw missing the tension spring or put some loc-tite on it
look at the pic here
http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/18/83/57/0900823d80188357.jsp