How many imrc valves so I have. I recently had a mechanic replace 2 and I take my intake off to check his work and there's only 1 replaced. Then I call asking if he had the other part so I can do it. Then proceeds to tell me there's only one. So thought I would get a second look to see before taking this to court

 

been a while but I believe there are 2
assuming you've got a 4.2 in an F150

post some more info about the truck, year and engine would help a lot

 

It is a 1998 f150 4.2l 5 speed

 

It has 2 IMRC. One on each side of the head. It open and close the butterfly plate on the lower intake manifold.