91 Ranger 4.0L
91 Ranger 4.0L
Postmaster
Joined: Dec 2001
Posts: 3,742
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From: UT
IMO, the first step would be to pull codes, to see if the computer sees a fault in the TPS.
TPS is a simple potentiometer. Basic test procedure is to put an ohmmeter on it and see if the resistance changes smoothly across it's range of motion. You'll want a wiring diagram so you can properly identify the three leads.
TPS is a simple potentiometer. Basic test procedure is to put an ohmmeter on it and see if the resistance changes smoothly across it's range of motion. You'll want a wiring diagram so you can properly identify the three leads.
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
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