I have a 2006 F-250 6.0 4x4 with 147500 miles. When I put it in 4x the a/c deverts to the defrost. I've vacuum tested the hubs and they hold a good vacuum. Is there anyway for me to vacuum test the solenoid itself? thanks for any help.
I received numerous codes stating cylinder injector circuit low. I received this for all 8 cylinders. Does this mean that I need to replace the injectors or is there another solution. Thanks for any help. I have a 2006 F-250 6.0 Lariat 4x4.