Country Coach Owners Forum

>

My 06 Cummins 400 ISL has climbed mountain passes from the West

it has probably been running in low. This causes the temp

>

I had the opposite problem with my 2004 Inspire. The fan control > module had the fan running on high all the time. CC would not send

replacement; instead they required the module be removed and sent

them for reprograming. This took over a month. With the module > removed, the fan ran on high and the engine was not very efficient

160 degrees. After the reprogramming, all was well. I might add

claimed there was no replacement part available for this module and > the only possible "fix" was the reprogramming.

Bob Mussman
2006 Allure 470

[quote author=R. D. Vanderslice"

>

> My 06 Cummins 400 ISL has climbed mountain passes from the West > Coast to the East Coast and most of the 10,000 ft. and up passes of > Colorado for two summers with no problems, however, this last

while climbing two long passes in Colorado it started heating up.
Both times it was a long climb up I-70 (Eisenhower Tunnel, Loveland > Pass area) above 10,000 feet and the temp reached 228 plus. On one > side of the mountain during one climb the warning light came on and > the engine shut down approximately 300 feet from the tunnel. I was > able to safely pull over and let it cool and everything was ok from > then on. It would have been a disaster had it shut down in the > tunnel. The coach normally runs on flat ground, 70-80 degrees, at

temp of about 200 degrees, however if I turn on the dash air, the > temp will drop to about 180-185. . I talked to CC and they said > that when I turn on the dash air that the Fan Speed Control Module > automatically kicks the fan speed to medium when > > it has probably been running in low. This causes the temp > drop. They also said that when I reached a certain temp (I

what temp) that the fan should kick on to medium or to high, > according to the engine temp. They said that my climbing high temp > problem sounded like the Fan Speed Control Module was not kicking

fan into high and thus causing the overheat problem. They also told > me I could go out under the coach and unplug the module and the fan > would automatically run on high all the time. They said I could do > this while in the mountains if I wanted to until I got somewhere to > get the Fan Module checked. Has anyone had this problem? I'm

to a CC Texans Rally next week and hope to get the Techs to check

>

Bob, at least it is good to know that it can be reprogrammed. The

R. D. Vanderslice
 06 Allure 31294

P.S.

If I seem like a motormouth this morning it's because it is

>

. motorhomecatz wrote:

I had the opposite problem with my 2004 Inspire. The fan

module had the fan running on high all the time. CC would not send

replacement; instead they required the module be removed and sent

them for reprograming. This took over a month. With the module > removed, the fan ran on high and the engine was not very efficient

160 degrees. After the reprogramming, all was well. I might add

claimed there was no replacement part available for this module and > the only possible "fix" was the reprogramming.

Bob Mussman
2006 Allure 470

[quote author=R. D. Vanderslice"

>

> My 06 Cummins 400 ISL has climbed mountain passes from the West > Coast to the East Coast and most of the 10,000 ft. and up passes of > Colorado for two summers with no problems, however, this last

while climbing two long passes in Colorado it started heating up.
Both times it was a long climb up I-70 (Eisenhower Tunnel, Loveland > Pass area) above 10,000 feet and the temp reached 228 plus. On one > side of the mountain during one climb the warning light came on and > the engine shut down approximately 300 feet from the tunnel. I was > able to safely pull over and let it cool and everything was ok from > then on. It would have been a disaster had it shut down in the > tunnel. The coach normally runs on flat ground, 70-80 degrees, at a > temp of about 200 degrees, however if I turn on the dash air, the > temp will drop to about 180-185. . I talked to CC and they said > that when I turn on the dash air that the Fan Speed Control Module > automatically kicks the fan speed to medium when > > it has probably been running in low. This causes the temp > drop. They also said that when I reached a certain temp (I forgot > what temp) that the fan should kick on to medium or to high, > according to the engine temp. They said that my climbing high temp > problem sounded like the Fan Speed Control Module was not kicking

fan into high and thus causing the overheat problem. They also told > me I could go out under the coach and unplug the module and the fan > would automatically run on high all the time. They said I could do > this while in the mountains if I wanted to until I got somewhere to > get the Fan Module checked. Has anyone had this problem? I'm going > to a CC Texans Rally next week and hope to get the Techs to check

>

That's what I thought, just wanted to make sure I wasn't missing

R. D. Vanderslice
 06 Allure 31294
> Unless you have the radiator fan deflector installed. I did this and

] >

Same fan control is also used with other engines. Fan controller > troubles were well discussed years ago on this list. Some were cured

Another way in the future is to install a switch in the electrical

allows you to open the circuit, thereby allowing the fan to go to

>

Jim & Kim Hill

08 Tribute 260 81138 (still in the production line) > 08 Cummins ISL 425

06 Ford F250 Super Duty Diesel Toad >

_____
> From: Country-Coach-Owners@yahoogroups.com (Country-Coach-Owners@yahoogroups.com) > [mailto:Country-Coach-Owners@yahoogroups.com (Country-Coach-Owners@yahoogroups.com)] On Behalf Of R. D.

Sent: Wednesday, October 03, 2007 8:05 > To: Country-Coach-Owners@yahoogroups.com (Country-Coach-Owners@yahoogroups.com) > Subject: Re: [Country-Coach-Owners] Re: Overheating Cummins 400 ISL >

Larry, that would be a whole lot better that laying under the back

a motorcoach on the side of a mountain with the front end pointing

up the mountain, the engine at 230 degrees and cars going by at 75

my idea of a safe situation. I hope to have the situation resolved

hit the mountains again next year, but I will ask the Techs next

that and get them to show me the fuse, just in case it happens

Thanks for your input.
R. D. Vanderslice
06 Allure 31294

Larry Feather wrote:

QUOTE: They also told me I could go out under the coach and unplug > the module and the fan would automatically run on high all the

END QUOTE.

I'm told that you can also pull out the fuse for the fan in the > outside electrical bay under the driver's seat to achieve the same > results.

Larry 03 Allure 30856

[quote author=motorhomecatz"

>

> I had the opposite problem with my 2004 Inspire. The fan control > > module had the fan running on high all the time. CC would not

a

> replacement; instead they required the module be removed and sent > to

> them for reprograming. This took over a month. With the module > > removed, the fan ran on high and the engine was not very

at

> 160 degrees. After the reprogramming, all was well. I might add > they

> claimed there was no replacement part available for this module

the only possible "fix" was the reprogramming.
>

> Bob Mussman
> 2006 Allure 470
>
>
>

[quote author=R. D. Vanderslice"
>]
> >

> > My 06 Cummins 400 ISL has climbed mountain passes from the West > > Coast to the East Coast and most of the 10,000 ft. and up passes

Colorado for two summers with no problems, however, this last > summer

> while climbing two long passes in Colorado it started heating up.
> Both times it was a long climb up I-70 (Eisenhower Tunnel,

Pass area) above 10,000 feet and the temp reached 228 plus. On

side of the mountain during one climb the warning light came on

the engine shut down approximately 300 feet from the tunnel. I

able to safely pull over and let it cool and everything was ok

then on. It would have been a disaster had it shut down in the > > tunnel. The coach normally runs on flat ground, 70-80 degrees, at > a

> temp of about 200 degrees, however if I turn on the dash air, the > > temp will drop to about 180-185. . I talked to CC and they said > > that when I turn on the dash air that the Fan Speed Control

automatically kicks the fan speed to medium when > > > it has probably been running in low. This causes the temp > > drop. They also said that when I reached a certain temp (I > forgot

> what temp) that the fan should kick on to medium or to high, > > according to the engine temp. They said that my climbing high

problem sounded like the Fan Speed Control Module was not kicking > the

> fan into high and thus causing the overheat problem. They also

me I could go out under the coach and unplug the module and the

would automatically run on high all the time. They said I could

this while in the mountains if I wanted to until I got somewhere

get the Fan Module checked. Has anyone had this problem? I'm > going

> to a CC Texans Rally next week and hope to get the Techs to check > the

> Module, but I'm not sure they will be able to out of the shop.