986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Only left radiator fan comes on. Problem?

thom4782 · 06-16-2016, 06:47 PM

To test...turn on car, then turn on a/c. Fans always run then at low speed,

If one fan doesn't run, then its either the ballast resistor, the fan motor or the fan relay. You can test the relay by swapping it with the relay from the working side.

06-16-2016, 06:47 PM	#7
thom4782 Registered User Join Date: Sep 2010 Location: Foster City CA Posts: 1,099	To test...turn on car, then turn on a/c. Fans always run then at low speed, If one fan doesn't run, then its either the ballast resistor, the fan motor or the fan relay. You can test the relay by swapping it with the relay from the working side.