code p1537 -ideas and suggestions please
check engine light is still on and code says p1537. I believe that is the IMRC. I ran the truck for a while without changing plugs and when I did , they were pretty worn out. Would this cause excess carbon build up in the manifold that can be cleaned out with brake cleaner? I was thinking of spraying out whole manifold including sensors to see if that fixes problem. Mechanic did look for vacuum leaks and could not find any.
Your thoughts please