3 Pin TPS

[saturnvii7]

Ok, so I disconnected my Throttle Position Sensor a few months ago because having it hooked up caused the engine to run terribly when cruising at about 1500 RPM that was bad enough that it could cause damage to the transmission.

I want to try hooking it back up again, hoping that some of the work I've done will help it to behave correctly. Unfortunately the harness connection had corroded to the point where the connector is toast, so I was thinking that I should be able to connect the wires directly to the pins as long as I can avoid shorts. Does anyone know which pins I should connect the wires to and which wire goes to which pin? I know one is generally for idle and the other for WOT.

Thanks for any help!

[evildky]

I was going to say ti only takes 2 wires but noticed you car is an 81, and all 81 turbo's were automatic and automatic's have a WOT switch that has somethign to do with the trans control, so I am suspensing your problem could be in the tps, or the trans control unit, hard to believe but back in 81 datsun was using electronic controled transmissions, I heard somethign years ago abotu being able to wire in a toggle switch taht would allow for paddle like up and down shifts, if you get a FSM it'll have the color coding for the wires, one is signal, one is throttle closed and one is WOT, hoping this helps get you ion the right path

[saturnvii7]

Thanks, that definitely helps. I noticed there's a stray cut wire so I'm wondering if it's the wire for the third pin that hasn't been hooked up while I've owned the car. I'll have to look for the transmission control unit as well... hopefully it still has it