1994 4.0 4x4 chugs when warm
Hey guys, a coworker of mine was telling me that his ranger wouldn't get over 50 mph when warmed up and was chugging (like in traffic). He took it in and the mechanic changed the fuel regulator, fuel filter, and the o2 sensors. Now he said it gets up to freeway speed fine but still chugs and only when its hot. What is it?