<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by busheytrader</i>
Here's a good viscous coupling test known by some as "the carrot test".
Step 1. Start your car with the engine cold.
Step 2. Take 1 standard Euro carrot and insert the top into the fan blades. The fan should stop rotating. If the top of the carrot is sliced off, then the viscous coupling has failed in a seized state and should be replaced.
Step 3. Remove the carrot from the engine bay and get engine nice and hot.
Step 4. Re-insert the top of the carrot into the fan blades. This time, the top of the carrot should be sliced off. If it isn't, the viscous coupling has failed in a free-wheeling state and should be replaced.
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My fan clutch has the same resistance whether it is cold or hot from a drive on a hot day. The temp gauge needle moves only a needle width from operating temp on an average day to stop and go driving on a hot day. While there is some fan noise (normal) it doesn't get progressively louder at higher speeds so I am guessing as speed increases the resistance increases from moving more air till it matches the resistance of the clutch. Once one gets used to engine noise/road/wind noise at 60 mph and as one gets board with highway driving the speed progressively increases until one see 75-80 mph on the speedo and one says who, better slow down a bit before one gets a speeding ticket. Would an electric fan be quieter? Sure (at least when it's off). If your clutch slip is too light or too heavy I wouldn't use it because it would be turning too fast or not fast enough. My fan clutch, the used spare and the new (NOS) spare are all the same slip so am assuming they are correct.
- - -TR7 Spider - - - 1978 Spitfire- - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT
