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Old 08-06-2013, 10:07 PM   #15
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1991 34' Excella
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1961 26' Overlander
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Originally Posted by mstephens View Post
... BTW, the fan is 650CFM and will run continuously. .. see how she does.
Just a heads up, watch the current draw on a continuous fan, it's common for the fan to pull more current than the alternator creates at idle.
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Old 08-06-2013, 10:42 PM   #16
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I do not think it is a good idea to have the fan run continuously. If a mechanic is saying to?? maybe go else where?? You only want it to come on when the temp. gets hot enough to warrant it. You can do some damage to the trans. if the temp. stays to low. Summer time is not that bad, but comes winter and cold mornings?? you really do not want that fan running. JMHO
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Old 08-07-2013, 06:51 AM   #17
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That fan is not necessary if the cooler is in the path of the engine driven air flow. That fan housing can also restrict air flow. Usually you have radiator, AC coil, and then the trans cooler all in a stack. The only reason you need a fan is if the main engine has electric fans or if the cooler will be located in an oddball place where it does not get air from the engine. Those fans draw a ton of amps and will drag down your battery and put a strain on the alternator.

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Old 08-07-2013, 08:27 AM   #18
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I looked at site your linked to for the cooler and it stated the fan: The "DAWG" can be manually controlled with an optional switch or by using our electronic fan control, part number 3651 (not included) to provide automatic operation when cooling is needed. I don't see why it would need to run continuously and I would put a switch on the fan.
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Old 08-07-2013, 09:31 AM   #19
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Originally Posted by perryg114 View Post
That fan is not necessary if the cooler is in the path of the engine driven air flow. That fan housing can also restrict air flow. Usually you have radiator, AC coil, and then the trans cooler all in a stack. The only reason you need a fan is if the main engine has electric fans or if the cooler will be located in an oddball place where it does not get air from the engine. Those fans draw a ton of amps and will drag down your battery and put a strain on the alternator.

Perry
This. My lowly V6 Traverse doesn't even have the tow package -- just added a simple external Hayden tranny cooler -- sits in front of the rad directly in front of the left fan with good airflow. I don't tow in the mountains or southern US, but I've yet to see my trans temp exceed 180 degrees in any conditions so far.

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