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Can any one tell me WHY there is no System Test for the Hydralic Fan on this 03 Jeep 4.7L. Shop Key and Identafix both say to use a suitable scan tool to actuate the fan solenid. HHHHMMMMMMMMMMm, not there. WHY?
eric,
I hardly ever see gas engines but all the diesel"s have a fan speed & fan percent pid. you can look at the engine speed and compair it to the fan speed then check fan percent to see if its being commanded on. there should be some info in shopkey for the coolant temp at witch the percent should change to bring the hydrolic fan speed to match engine speed.
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