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Old 08-06-2012, 08:56 PM   #1
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Horton Fan Clutch 2004 Endeavor

I am uncertain if the fan clutch is engaging when the engine temperature signals the computer to engage the fan or even if the fan will engage when activate manualy.

I noticed dependent on load and grade that the engine temperature
ranges 185 to 205 degrees.

When idling I notice that there is no differnce in air volume from the engine fan when I switch on the manual over ride to engage the clutch.

I had a shop check the operation and they claim that the computer does show the fan is engaging and all is ok.

My concern is that the computer states all ok but really is not engaging.

Is there another test that can be done.
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Old 08-06-2012, 09:27 PM   #2
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Robert, how are you checking the air volume at idle before and after switching to manual?
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Old 08-07-2012, 05:44 AM   #3
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Checking at idle before and after switching to manual, engine at operating temperature.
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Old 08-07-2012, 03:40 PM   #4
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Our Horton fan engages at 210-212 degrees and stays on generally until it drops to 185-195. Mostly the only time I hear it kick in is on a substantial hill climb (long 4%-7% grades). I can hear it (but not loudly) when it kicks in. The Cummins tech that installed it five years ago said the engine temp could get to 215 with no harm at all to the engine. By the way, my fan has no way to manually activate it.

Bill

Quote:
Originally Posted by Robert T View Post
I am uncertain if the fan clutch is engaging when the engine temperature signals the computer to engage the fan or even if the fan will engage when activate manualy.

I noticed dependent on load and grade that the engine temperature
ranges 185 to 205 degrees.
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Old 10-13-2012, 10:08 PM   #5
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Quote:
Originally Posted by CoolJourney View Post
Our Horton fan engages at 210-212 degrees and stays on generally until it drops to 185-195. Mostly the only time I hear it kick in is on a substantial hill climb (long 4%-7% grades). I can hear it (but not loudly) when it kicks in. The Cummins tech that installed it five years ago said the engine temp could get to 215 with no harm at all to the engine. By the way, my fan has no way to manually activate it.

Bill
would you happen to have the part number of the one you had installed
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Old 10-14-2012, 03:32 PM   #6
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The Horton model # is 990400. You can go to Horton website and look at catalog for other applications for other Monaco products. If you can help thanks
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Old 10-18-2012, 02:28 PM   #7
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Quote:
Originally Posted by rstarny View Post
would you happen to have the part number of the one you had installed
Sorry, I was away from home and couldn't post sooner. The previous poster (Robert T) had the right part number.

Bill
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Old 10-19-2012, 06:33 PM   #8
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thanks i also heard that there is one (EC450) that turns on and off but i haven't been able to find any info
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