first off i have a 91 sub 350 tbi. my coolant temp guage never moves. i figure the sensor is bad. i overheated this past summer. must have fried then. which sensor is for the guage? the one on the driver's side head or in the intake manifold near the t-stat housing. is the sensor the same part for both places. i picked up a sensor from advance today. forgot the part number. both sensors look similar. i didn't try to look at the plugs yet. thanks y'all.