Also verify no indication of viscous fluid leakage. If the temperature gauge is starting to climb and the fan is still not working, let go of the fan and turn on the heater to cool the engine, Turn off the heater and warm up the engine completely, Stop the fan using a rag like in the video below, Because the engine is at normal operating temperature, the PCM will not command the fan to run right away. Fan Clutches for Commercial Vehicles - SACHS - ZF Friedrichshafen rS&cD5Ts6'E7FdU()8GHVe*9:IJWXYZftugvwhijxyz i !1AQa"q2#BR 3br$Csc%4S5&DTdEU' I took a rag and dragged it against the outer part of the fan and was able to slow it with some firm pressure and eventually stopped it. If it spins more than three full rotations, this indicates that it may be prone to slipping. In our 97-98 AmTran REs, the 444s run 210* all the time, sometimes a little less in the winter, in the summer, the fans are almost constant on, and if it's hot enough (85-90* outside) they'll hit 230* under load. By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. For more information about how to test a fan clutch, such as other signs to look for which indicate damage, read on. You do realize that you are posting things that don't work for the everyday person trying to figure out his problem. Very good info on the function of the EV Clutch however, the quick function test requires a Tech 2. Very interesting info and could be useful to anyone that has a scope and/or high end scanner or Tech 2. With more than eight years of experience, he specializes in providing maintenance and repair services for both individuals and companies. Fan clutch ticking | Ford Explorer - Ford Ranger Forums - Serious y8#870S9sA1\ Quick tutorial on how to refill your viscous fan clutch with proper fluid and reseal the chamber. If the ground breaks it's the same. Once stopped I can hold with light pressure of single finger or thumbpad, and after revving at 2k RPM same result to stop and hold. A binding fan clutch will typically be accompanied with warm air flow from the A/C, since the fan isnt turning the way it should be.
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