« Reply #66 on: December 07, 2011, 06:25:55 pm »
resistance checking is useless in this setting unless you suspect your TPS is completely borked.
you need to run voltage thru it while you are testing for changing voltages.
you need to run small pins into the two wires at the connector so you can hook up a volt meter to the lines.
at closed throttle it should be near 0v and at full throttle it should be near 5v
Don't stab the wire, you can introduce other problems later. Push the pins/thin metal rods into the back of the connectors, past the weather seals carefully so they contact the metal inside the connector. Then these pins now act as points to hook your DVOM up to.
Key on, engine off, read the voltages. SLOWLY move the throttle plate from closed to open and back. If its glitchy in its movement,and this can be repeated, replace the TPS. If its not close to 0 and close to 5 at the other end, replace it. Set it according to VFAQ, but it should be about half a volt at idle.
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