I'm wandering where the tps is located on my 1991 4.9l. I'm gonna be replacing it Friday. Thanks.

 

On the bottom side of the dual-butterflies - will need to remove the throttle butterfly assembly to replace. I just removed the mounting bolts, disconnected the electrical harness, left the coolant hoses attached, and peeled the assembly upward to access the TPS.

Mine had two screws that appeared to be locktited in place - suggest to use a good-fitting screwdriver and a bit of finesse to avoid wallering out the screw head.

Have a look at the old unit before removing - it is important that the tangs of the TPS engage the butterfly blade on the correct side. Get the two screws started, then twist the TPS clockwise towards the closed butterfly position and then hold while the screws are tightened down. Should getcha pretty close if not spot-on the recommended voltage levels.

Takes about an hour, including the tool roundup and put-away.