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Old 10-29-2008, 12:54 PM   #1
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In the November/December Lazydays RV Magazine there is an article about a "cooling modification package."

According to the article, Monaco Coach Corporation has approved a new fuel saving cooling package for 2006-2009 Cat C9 and Cummons 360 and 400 hp engines. The claim is the modification may improve fuel efficiency by up to 11% for the Cummons and 29% for the Cat C9. Costs range between $650 and $1200 and needs 2-3 hours to be installed.

Sounds great and one cross-country trip you have paid for the system.

My question is; what is a "cooling package modification?" The only thing I can think of is some kind of intercooler or something to let the engine take in cooler air for more efficient combustion.

What do you all think?
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Old 10-29-2008, 12:54 PM   #2
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In the November/December Lazydays RV Magazine there is an article about a "cooling modification package."

According to the article, Monaco Coach Corporation has approved a new fuel saving cooling package for 2006-2009 Cat C9 and Cummons 360 and 400 hp engines. The claim is the modification may improve fuel efficiency by up to 11% for the Cummons and 29% for the Cat C9. Costs range between $650 and $1200 and needs 2-3 hours to be installed.

Sounds great and one cross-country trip you have paid for the system.

My question is; what is a "cooling package modification?" The only thing I can think of is some kind of intercooler or something to let the engine take in cooler air for more efficient combustion.

What do you all think?
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Old 10-31-2008, 08:25 PM   #3
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It is an electric fan clutch for the radiator fan on coaches with a rear mounted radiator. It allow the clutch to disengage until temperature rises to certain point. The ones that already have the mod like the reduction in noise also. If you have a side radiator, this doesn't apply
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Old 11-01-2008, 05:41 AM   #4
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We had one installed on our coach last year. We have seen a mileage increase of almost 1 MPG, significant noise reduction and a slight increase in power at a slower speed. Money well spent IMHO. (400 Cummins ISL)
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Old 11-25-2008, 02:46 PM   #5
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Does anyone know a C-9 owner who has made the mod?

JQW
07' Country Coach
CAT C-9
Jeep Liberty & Chevy Tahoe
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Old 11-27-2008, 07:52 AM   #6
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Chuck,

Where did you have the work done on your coach?

Thanks,

Jim
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Old 01-06-2009, 04:21 PM   #7
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Ditto what Our Time said. Had ours installed at the dealer by Cummins after we purchased it. Cummins did the work in order for the warranty to cover it and it ties into the engine (400ISL) wiring. On a Cat. I would think Cat. would do it. Horton makes the fan clutch.
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