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Old 01-19-2016, 11:18 AM   #1
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Unhappy Hydraulic Motor Question

My 2005 DeVinci has been wanting to over-temp.
Have run through most frequently discussed solutions.
Wondering if anyone has had heating engine problem caused by hydraulic motor allowing fan to slow down as system heats up.

Have installed a bypass switch for controller which works fine.

However would like to determine cause of heating problem.

Once I need to use bypass, which may occur after 70 or 80 miles of driving,
I need to operate by pass every 20 or thirty miles.

Dick
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Old 01-19-2016, 11:41 AM   #2
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Quote:
Originally Posted by AR Devinci View Post
My 2005 DeVinci has been wanting to over-temp.
Have run through most frequently discussed solutions.
Wondering if anyone has had heating engine problem caused by hydraulic motor allowing fan to slow down as system heats up.

Have installed a bypass switch for controller which works fine.

However would like to determine cause of heating problem.

Once I need to use bypass, which may occur after 70 or 80 miles of driving,
I need to operate by pass every 20 or thirty miles.

Dick

Dick,

Are you sure your engine is overheating? What engine temps are you seeing? What trans temps are you seeing? Do you have Silverleaf or are you using the dash gauge for monitoring the temps? What engine do you have? Some use different sensors for dash gauge and ECM, some use the same sensor. Has the fan controller been replaced in the past?

This information might help locate your problem,
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07 Inspire 52059
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Old 01-19-2016, 01:46 PM   #3
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Location: Warren, Oregon
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On mine with a Cat C-9 going by the dash gauges they are running (coolant & trans) about 20deg hotter than my Silverleaf. My fan kicks in around 204-6deg and turns off around 196deg.
2 stroker
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2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
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SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
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Old 01-19-2016, 07:36 PM   #4
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I had a inspire with a c9 cat and I had one of the 2 thermostats go bad which allowed the water to get a little warmer and showed erratic temp swings. First thought the fan but Colton truck swapped the stats and problem resolved. Fairly simple repair since there right on top the engine easy to get to.
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