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Re: 2005 Ford Excursion _elevated hi side psi and fan clutch
Posted to HVAC Forum on 8/20/2020 3 Replies

If you want to know if it is the fan clutch or the ECM all you have to do is hook a test light to battery voltage and the dark blue wire. Although it is PWM a bulb doesn't know the difference between PWM and a dimmer. At 90 percent fan the dark blue wire would... Login to read more.

3 Replies Received (View Replies)