Moonfish

And the crazy idle that only happens when you press the brake pedal.

camo 93

Hello everyone. Im new here and fairly new to Toyota. Im here seeking wisedom. My ride is a regular cab 22re. Idle surges when brakes are applied. Replaced booster which did not fix the problem. The great and powerful google sent me here. I have looked at this entire thread. I did the tape test for iacv. No help. Took out and cleaned idle screw and adjusted to approximately 900 rpm. Problem solved (temporarily). After the engine cooled; I started it again and the engine will barely idle 200 250 rpm. Adjusted screw again back to 900 (cold) As the engine warmed up again; idle climbed again to approximately 1300. Surging with brake again. Is this a tps problem??

Any help would be greatly appreciated.

toyota4x4907

Timing needs to be adjusted properly the adjust the idle screw. How's your coolant level?

smelm0

as far as my experience goes with a 91 p/u with a 22re engine goes, I found basically 3 parts that could impact the idle besides the set screws. they are the mass air sensor, the throttle position sensor, and, of course, the computer. if i were you I'd start with the cheapest part:that is, the tps. mas also over time will degrade too . the used ones from carbone tend to test out of spec but i did over time once receive one thru auto zone which was calibrated at the factory by an tech that I spoke with. you might just try to clean the area with a special cleaner available at walmart, etc. the computer can b gotten from salvage but its solid state and I doubt is the culprit. but you never know until you change it out if need b.
hope this helps.
good luck.

hybridspecies

If the surging happens only when at idle with your foot on the brake, then try adjusting the idle screw so the engine is running at 750 - 850 rpm.