Hi
so Im currently looking for an IAC Valve for my 1993 LS400, the code is toyota 22270-50020.
I'm having issues with my idle so i'll try to change this part to see if it fixes it.
And yes, I have already changed the ecu

 

 

I took it out and tried to open it cause it is a non repairable one, not like the ucf20 models that can be opened by a few screws, I cleaned it but it looks like it still has the problem.

 

You probably need to rebuild yours. You will need a few bearings

Only UCF1Xs up to 1992 had service friendly ones with screws. 1993+ the design changed but they can still be serviced

There's a good video from CartuneNZ on youtube that I would recommend checking out

 

Yeah I have seen a couple of videos from him and how to repair them but I didn't manage to open the valve sooo I guess i'll just change it.