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Old 08-29-2003, 02:27 AM
sbourg sbourg is offline
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Join Date: Jul 2001
Location: SoCal
Posts: 1,303
If you checked its condition visually, that is probably adequate.

You cannot get an accurate indication using an ohmmeter. The way to test it out of circuit is to apply a voltage across the outside terminals, and monitor the voltage on the wiper pin as the plate is moved. This is best done with a high-impedance analog meter and bench power supply, not generally in most garages.

Or, monitor the voltage in-circuit with the engine running. The voltage should be steady at a steady rpm, and about 0.7V at low idle.

'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
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