Hi, I hope there is some help here for me with the P0401 code. Mine acts erratically. Sometimes I can drive 100-150 miles before it codes, other times, it will do it within 5-10 miles. I have removed the EGR valve
and cleaned everything I could with carburetor cleaner and wire. With or without the EGR valve
attached, the vehicle idles smoothly.
I just bought this van and the engine was rebuilt, it runs great, but I found some mistakes (or so I think) like the possibly of the EGR valve installed backward? :shock: Is that possible?
Any suggestions would be greatly appreciated.