Having an issue with a Ford E150 1994 van . The issue is that the van stalls , has rough idle and shakes a lot. once the gear is put into drive. I tried a few things I replaced the air intake control valve with a new one I cleaned the EGR with cleaner I cleaned the throttle body with throttle body cleaner spray
The issue persists and once a load is added eg. turn the wheels all the way, turn on the ac, put the van into drive. Please assist. When started it runs like a wounded beast.
I'm getting error codes 412, 121 and 538