It should be the entire vacuum plate thingy (dashpot), not just the hose with the filter, IIRC the dashpot is held on by 2 philips screws - pull the whole thing off
I've had that at one point or another on every 22RE I've owned (can also set a TPS code because the throttle doesn't completely close) - see the thing in the green circle? it's held on by 2 phillips screws and teh vacuum line just goes to a little plastic filter (not connected to the intake) -
remove it. you don't need it. it slows the throttle plate right before it closes completely, but often times it gets sticky and won't retract fully. I've had no issues on any of my previous Toyotas with it off and couldn't tell any difference
Well, from the look of it, its got two little springs, the spring you can see there helps pull the throttle back down, but then on top of the d-pot is another spring pushing the throttle back up, with a little rod also.
I may be over thinking it, but just trying ot understand. I dont
really understand the function of the assembly anyways.
I've been searching all morning and by luck found this on yotatech.com :
Had a similar problem in my '88 4Runner--idle would intermittently stick between 1500-2000 when I stopped at a light. If I popped the gas peddle it immediately returned to normal idle rpms. This went on for over a year before I tried to fix it. When controlling the throttle at the throttle body, I noticed if I allowed the throttle to return slowly the rpms would stick, but if I let it snap back the rpms were normal. Then when it stuck I noticed with light pressure I could get the throttle to close and rpms drop to normal. I initially focused on Dashpot, but filter worked fine (blew on it both ways, easy one, difficult the other) and the rod seemed to work ok (lubed it with silicone spray). Then I did the simple first--I got some throttle body/choke cleaner safe for electrical sensors and a baby bottle brush. Parked the rear of the 4Runner on an incline so throttle body was pointing downhill, then cleaned out tons of tar-like residue from the throttle body. Idles perfectly again.
Exactly the problem, exact results.......... until it did it to him again, and he found that the throttle cable was sticking. I ride motorbike, i'll get my cable luber out sometime today, if it gets over 30* I hate cold.