Iv been having an idle issue with my 01 montero xls. it has abut 125k and its running pretty strong except for the low idle, it feels like a misfire but i know its the idle. Two weeks ago I took out the IAC valve and cleaned it with intake cleaner, while i was at it i also took the chance to clean the intake manifold as much as i could.

after I put everything back together the truck ran perfectly, no idle issue at all. A week later its back to the low bumpy idle issue again. Today I took out the EGR valve and cleaned it but it remains the same, I also tried to clean the IAC valve again but its back to where it was. Searched online and seen this part sells for $175 to $200.

suggestions? Im almost certain this will fix my issue but before i shell out the cash is there something else i could do?

 

I found this video on Youtube. I checked mine out with a volt meter and mine read 32.5 on one side and 34.5 on the other, he does say a good IAV valve should read 38OHMs at each coil. is it time to replace mine?