When I put on the brake it's starts to idol funny(not funny haha) then when I let off the brake it idols high at about 1500-1600 rpm. when my foot is on the brake it drops to about 800-900 rpm and then up to around 1200-1300 rpm then back down to 800-900 rpm. I really have no idea what's causing this please help

 

THis is a common problem with an automatic tranny (that's what you have, isnt' it?). I don't know the exact fix, but I'm sure someone will come along soon with your solution.

 

I have the 5 spd tranny and the engine is a 22re

 

I'd bet you have a vacuum leak. Run an UNLIT propane torch around the intake & all vacuum lines; if it idles up, you have a leak there. Check the brake booster line first.

 

your idle is too high, turn it down and i bet this will go away, the computer is hitting fuel cut, it thinks that your decelerating in gear....

 

yeah sounds like your idle is too high to me. it should normally idle around 750 or something like that, not 1300

 

I started and drove the truck around a bit before I went to work and it didn't have the idoling issue so I don't know

 

idle not idol

 

hahahahaha I was waiting to see who would catch that

 

my 86 runner with a 5spd 22re does the exact same thing. its like rrrrrrRARrrrrrRARrrrrrRARrrrrr.

 

You're caught in the fuel-cut/fuel-return loop. You most likely have an intermittent vacuum or air intake leak. Try the propane trick or use a spray bottle to mist some water around. The mist will get sucked in and cause a quick RPM drop.