1997 F150 4X4 4.6 help appreciated! temp guage fluctuates like crazy
. doesnt matter if hot or cold totally random. doesnt just peg hot. Ford said its cluster so i replaced it, no fix! ive replaced both temp switches/senders on intake manifold, no fix. no codes and the truck runs perfectly. one other thing, on the left upper corner of the cluster there is also a light that comes on randomly along with the swinging guage needle, its the light with the thermomoter/ oil can. oil pressure is good, coolant temp is good. any thoughts?