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Old 04-05-2017, 07:38 AM
1949studebaker 1949studebaker is offline
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Exclamation Wiring for Throttle Position Sensor

Help, I have an 86 Ranger with the Black with White Stripe wire from throttle position dangling loose. It has part of a terminal on it like it broke and fell out of a connector. Anyone know where this wire should be connected to the Main Engine Control harness? The other B/W wires terminate in a harness on the drivers side wheel well.
1986 4X4 Reg Cab Short Bed 31X15 Tires
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Old 04-06-2017, 08:36 AM
tomw0 tomw0 is offline
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Join Date: Aug 2015
Posts: 842
Default Re: Wiring for Throttle Position Sensor

The 1985 Ranger EVTM indicates the BK/W wire goes from the TPS to S127(splice 127) on the RH fender near the TPS. The TPS wire along with about 10 others splice there.
The other two wires on the TPS are DG/LG and O/W. The DG/LG goes to the ECM and the O/W comes from S126 (near the dash grommet). I think the O/W is a regulated power source, regulated for reference as the vehicle voltage wanders a lot.
The BK/W wire is 'sensor ground' I think for a passel of sensors.

Odds are the wires are the same or similar for the 86 model year also.
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