Gulf Stream Owners RV Forum
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-17-2009, 03:59 PM   #1
DelJac
Junior Member
 
Join Date: Nov 2009
Location: Alberta Canada
Posts: 11
Default Radiator cooling

98 tourmaster 400 cummins side rad has hydraulic fan. i think its running all the time and would like comments on this subject. having run cummins engines in highway and off road trucks i'm sure it is running to cool feeling cummins needs its heat. an thoughts. thanks Jack
DelJac is offline   Reply With Quote
Old 11-17-2009, 08:05 PM   #2
GStream40
Site Team
 
Join Date: Nov 2005
Posts: 911
Default

Doesn't the coolant thermostat control the engine temperature and not the running of the fan?

In other words, it is true that the fan will cool the coolant and lower the temperature IF the coolant thermosat opens when the engine temperature is up to the level that coolant can flow thru the engine and radiator. If the temperature is to low, then the coolant thermostat will close not permitting the coolant to flow or to restrict the flow to keep the temperature at a constant.

So it really doesn't matter if the side radiator fan is running all the time, the coolant thermostat controls the temperature of the engine.

The only reason that they have a fan clutch on a rear radiator diesel, is to save horsepower that is used when the fan is not needed, NOT because to keep the temperature of the engine up. It is also controlled by the coolant thermostat.

It is also the same on a front engine diesel or gas motorhome or vehicle of any type.

Ron
GStream40 is offline   Reply With Quote
Old 11-17-2009, 11:19 PM   #3
DelJac
Junior Member
 
Join Date: Nov 2009
Location: Alberta Canada
Posts: 11
Default Radiator cooling

Thanks Ron for the come back. I think the fan maybe run by a sending unit on the engine and that maybe the problem. By rights the fan should not come on until coolant temp reaches 180-220 in an engine this size, so when you spoke of the thermostat that maybe the problem but the fan should not come on until temps are reached. The coach came from the south USA and may not have a high temp thermostat so does not get to temperature. I was just curious as to why the fan ran all the time and if others had experienced the same situation. I will take all info and try to get temps up in the engine. Thanks again for your help Jack
DelJac is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
SuperNova Cooling System Leak Texas TC Class C 5 08-26-2019 03:16 PM
Cleaning Tourmaster Radiator tarheel Class A 1 07-01-2014 08:15 PM
International radiator hose Georunner Class C 8 02-23-2012 03:35 PM
Fan and cooling steve.k Class C 0 09-04-2010 09:41 AM
FRED Dash Air Conditioning Not Cooling mikey52 Class A 0 06-25-2009 03:31 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 01:59 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×