RV Trip Planning Discussions

Go Back   iRV2 Forums > POWER TRAIN GARAGE FORUMS > Caterpillar Engine Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-30-2018, 08:56 AM   #1
Junior Member
 
Join Date: Oct 2017
Posts: 7
Overheating

Think clutch fan is not working. Can only feel it working for a few seconds once you start up then shuts off. Does it start when temp gets to manufacture says 207 or sooner? Can it be in the ECU. Changed the sending unit and both Themostats still overheating.
__________________

Lost man is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-30-2018, 09:12 AM   #2
Senior Member
 
Rkesselus's Avatar
 
Tiffin Owners Club
Join Date: Aug 2016
Location: Bastrop Texas
Posts: 1,052
A little more information on when and how it overheats would help with advise on problem or fix.
__________________

__________________
2000 Allegro Bus 35R 3126 Cat 300 Allison 3060MD 6 speed
Rkesselus is offline   Reply With Quote
Old 12-30-2018, 10:16 AM   #3
Senior Member
 
Join Date: Sep 2013
Posts: 572
Quote:
Originally Posted by Lost man View Post
Think clutch fan is not working. Can only feel it working for a few seconds once you start up then shuts off. Does it start when temp gets to manufacture says 207 or sooner? Can it be in the ECU. Changed the sending unit and both Themostats still overheating.
I would not think your clutch fan would start working on start up... should be controlled by a thermostat reaching a certain temp. I can never feel my radiator clutch engaging. But... I can assume it is working when the temp gets up to about 194 and then pushes back down to about 190 in a mater of seconds.
__________________
Mo Fred, U.S. Army Retired
2002 Beaver Patriot Thunder
C12 CAT 455 HP, 40 FT, Towing 2012 Mazda III
MO Fred is offline   Reply With Quote
Old 12-30-2018, 10:53 AM   #4
Senior Member
 
Join Date: Aug 2017
Posts: 1,366
The clutch should engage when the engine is started then again when the engine temp goes about 10 deg hotter than the factory rated thermostat. If the clutch is working , you will hear it when the engine is running hot. It should keep the temp below 220.
The ECM may or may not control the clutch.
__________________
1993 Tiffin Allegro Bay 32'
Soppy is offline   Reply With Quote
Old 12-30-2018, 12:22 PM   #5
Junior Member
 
Join Date: Oct 2017
Posts: 7
Quote:
Originally Posted by Rkesselus View Post
A little more information on when and how it overheats would help with advise on problem or fix.
Can only drive 5 miles, then overheats. Cat 3630; 330 hp. Fan doesn’t come on when temp reads 222
Lost man is offline   Reply With Quote
Old 12-30-2018, 12:25 PM   #6
Junior Member
 
Join Date: Oct 2017
Posts: 7
[QUOTE=MO Fred;4565853]I would not think your clutch fan would start working on start up... should be controlled by a thermostat reaching a certain temp. I can never feel my radiator clutch engaging. But... I can assume it is working when the temp gets up to about 194 and then pushes back down to about 190 in a mater of seconds.


Mine not working,overheating all the time ,can drive 5 miles then I shut her down
Lost man is offline   Reply With Quote
Old 12-30-2018, 02:53 PM   #7
Senior Member
 
Join Date: Jul 2014
Posts: 19,122
Is the fan clutch air, electric or thermal activated ?

Thermal will spin up at startup and then calm down, until hot. If the radiator is plugged, the hot air won't reach the thermal spring in the center. Look between the cores.

Air and electric will only spin up when at 200°s or so. Then they engage and spin up. You still need clean radaitor cores.
twinboat is offline   Reply With Quote
Old 12-30-2018, 04:23 PM   #8
Senior Member
 
2 Stroker's Avatar
 
Join Date: Nov 2009
Location: Warren, Oregon
Posts: 2,358
How many miles are on it, being a rear radiator I would think you may need to pull the radiator to really clean radiator cores. Where is the breather hose to the motor, needs to be to the rear of the coach.
2 stroker
__________________
2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
2 Stroker is offline   Reply With Quote
Old 12-30-2018, 04:42 PM   #9
Senior Member
 
Rkesselus's Avatar
 
Tiffin Owners Club
Join Date: Aug 2016
Location: Bastrop Texas
Posts: 1,052
Quote:
Originally Posted by Lost man View Post
Can only drive 5 miles, then overheats. Cat 3630; 330 hp. Fan doesn’t come on when temp reads 222
What is your definition of overheat. Just a message, temp. gage or hot enough to lose coolant? Can you see the fan, side radiator. I am not familiar with a Cat 3630. If you have the engine serial number we can look up the fan clutch type to troubleshoot your problem
__________________
2000 Allegro Bus 35R 3126 Cat 300 Allison 3060MD 6 speed
Rkesselus is offline   Reply With Quote
Old 12-30-2018, 06:02 PM   #10
Senior Member
 
Join Date: Feb 2016
Posts: 230
As 2 Stroker stated. A rear DP needs cleaned on a regular basis. Pull your floor up and look at the face of the CAC and Rad with an inspection camera OR have a helper shine alight on one side while looking at the other.
?How many Miles on your coach?
?Last time the RAD/CAC was cleaned?
__________________
George and Diane, 2004 Discovery 39S pushed by our Keywest CC w/115 Johnson
discovery39s is offline   Reply With Quote
Old 12-30-2018, 06:50 PM   #11
Junior Member
 
Join Date: Oct 2017
Posts: 7
Quote:
Originally Posted by Rkesselus View Post
A little more information on when and how it overheats would help with advise on problem or fix.
It’s overheating About every 5 miles stays normal the first couple of miles then moves fast to out of normal,stay to stay around 50 mph but continues to rise. Had coolant changed,hoses are good. On gage it moves out of normal quickly.
Lost man is offline   Reply With Quote
Old 12-30-2018, 06:55 PM   #12
Junior Member
 
Join Date: Oct 2017
Posts: 7
[QUOTE=discovery39s;4566514]As 2 Stroker stated. A rear DP needs cleaned on a regular basis. Pull your floor up and look at the face of the CAC and Rad with an inspection camera OR have a helper shine alight on one side while looking at the other.
?How many Miles on your coach?
?Last time the RAD/CAC was cleaned.
Cleaned rad Sun( blew rad with air then water, changed fluid Sun,changed cap,both thermostats and sending unit. 65000 miles
Lost man is offline   Reply With Quote
Old 12-30-2018, 06:59 PM   #13
Junior Member
 
Join Date: Oct 2017
Posts: 7
Quote:
Originally Posted by Rkesselus View Post
What is your definition of overheat. Just a message, temp. gage or hot enough to lose coolant? Can you see the fan, side radiator. I am not familiar with a Cat 3630. If you have the engine serial number we can look up the fan clutch type to troubleshoot your problem
I don’t let it get that hot to lose fluids, but all sensors, bells whistles go off on dash at 210* coach lose power at 220
Lost man is offline   Reply With Quote
Old 12-30-2018, 11:18 PM   #14
Cat
Senior Member
 
Join Date: Jan 2005
Posts: 952
With your engine at 210 your fan should be loud. When you get it hot have someone keep the engine at 1800 rpm or above in neutral with brake on and go back to the radiator outside the fan should be loud and there should be a lot of air blowing out the radiator. If you have the fan noise but very little air movement on the lower part of the radiator the radiator is plugged externally. One other thing I have seen is if you get a high concentration of antifreeze 70% or above the engine will overheat under loaded conditions- but your fan still should be blowing air and be very loud with raised engine rpms.
Cat had a 3160 but it was a V8 and it was like a 1980 year engine. Maybe you have a 3126?
__________________

Cat is online now   Reply With Quote
Reply

Tags
heat, heating



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Problems overheating (Long) Fakrwee Ford Motorhome Chassis Forum 22 02-09-2009 08:28 PM
V10 Overheating F I X E D! ! ! ! jcrowder47 Ford Motorhome Chassis Forum 8 09-01-2007 05:50 AM
V-10 Overheating "FIXED"?? jcrowder47 MH-General Discussions & Problems 1 07-26-2007 10:53 AM
KSDP overheating Ed-Deb Newmar Owner's Forum 8 07-21-2006 04:45 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:29 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×