Reply
 
Thread Tools Display Modes
Old 05-20-2014, 08:09 PM   #1
Member
 
Join Date: Apr 2014
Posts: 89
Overheating until...

I have a 2009 Berkshire 390BH (40) that is behaving strangely.

The engine will run until the dash computer reads coolant temp high and shows an engine temp of 220F. I usually pull over, stop the engine, start it back up, and it would then run the rest of the day with no cooling issues.

On other trips, it was unsafe to pull over immediately, and I drove a bit further, with the temp warning showing in chorus with a check engine light (high 220s F), I assume due to the temp. Stopping and starting again sometimes fixes the problem, otherwise I drive again until the warnings come on, stop and start, and then the cooling system brings the temp in line for the rest of the day.

Here's what I know:

Upon cool start at the beginning of a trip, the fan runs for a minute upon start up then stops,as I think is correct.

The fan is not running when I pull to a stop with the coolant temp high light showing

The fan is running after the pull-over-start-stop rodeo when that sequence leads to proper running temps.

I guess I'm curious if, with the fan running through the 1 minute initialization sequence, does that eliminate the fan clutch as the issue? Must this be a software problem or maybe a lazy thermostat? Can the thermostat be replaced without opening the bedroom engine access panel?

Thanks

JB
__________________

__________________
Moose
2009 FR Berkshire 390BH
jbramhall is offline   Reply With Quote
Old 05-20-2014, 08:38 PM   #2
Senior Member
 
mark0224's Avatar
 
Join Date: Oct 2013
Posts: 1,443
"The fan is not running when I pull to a stop with the coolant temp high light showing"
This would make me think the fan isn't working properly and the shutting off and turning back on causes something to reset. I think I would take to a mechanic before you overheat and do damage to the engine.
__________________

__________________
Think about things before you do them make life easier not harder.
mark0224 is offline   Reply With Quote
Old 05-20-2014, 08:48 PM   #3
Member
 
Join Date: Apr 2014
Posts: 89
Thanks, and I'm looking to understand the root condition a bit more.
__________________
Moose
2009 FR Berkshire 390BH
jbramhall is offline   Reply With Quote
Old 05-20-2014, 09:01 PM   #4
Senior Member
 
VinceU's Avatar
 
Join Date: Dec 2011
Posts: 3,502
Quote:
Originally Posted by jbramhall View Post
I have a 2009 Berkshire 390BH (40) that is behaving strangely.

The engine will run until the dash computer reads coolant temp high and shows an engine temp of 220F. I usually pull over, stop the engine, start it back up, and it would then run the rest of the day with no cooling issues.

On other trips, it was unsafe to pull over immediately, and I drove a bit further, with the temp warning showing in chorus with a check engine light (high 220s F), I assume due to the temp. Stopping and starting again sometimes fixes the problem, otherwise I drive again until the warnings come on, stop and start, and then the cooling system brings the temp in line for the rest of the day.

Here's what I know:

Upon cool start at the beginning of a trip, the fan runs for a minute upon start up then stops,as I think is correct.

The fan is not running when I pull to a stop with the coolant temp high light showing

The fan is running after the pull-over-start-stop rodeo when that sequence leads to proper running temps.

I guess I'm curious if, with the fan running through the 1 minute initialization sequence, does that eliminate the fan clutch as the issue? Must this be a software problem or maybe a lazy thermostat? Can the thermostat be replaced without opening the bedroom engine access panel?

Thanks

JB
Why not call a Freightliner shop and ask for a mechanic. Discuss the overheat problem and chances are they have heard it before. Maybe you can some help over the phone.
__________________
VinceU is offline   Reply With Quote
Old 05-20-2014, 09:01 PM   #5
Carknocker Family
 
Ida Ratherbe Camping's Avatar
 
Join Date: Mar 2013
Location: Arkansas
Posts: 484
Is your coolant full? Could have an "air pocket" around the sender for the fan and its not reading the high temp. Is there bleed valves on intake or other places on the coolant system? My 2 cents....
__________________
Nights camped 2015...20
Nights camped 2016...20
Nights camped 2017...24
2017 Ram 2500
2014 Salem 32BHDS
Ida Ratherbe Camping is offline   Reply With Quote
Old 05-20-2014, 09:21 PM   #6
Carknocker Family
 
Ida Ratherbe Camping's Avatar
 
Join Date: Mar 2013
Location: Arkansas
Posts: 484
Does any of this sound familiar to ya?

2009 ISB 6.7 overheating - iRV2 Forums
__________________
Nights camped 2015...20
Nights camped 2016...20
Nights camped 2017...24
2017 Ram 2500
2014 Salem 32BHDS
Ida Ratherbe Camping is offline   Reply With Quote
Old 05-20-2014, 10:15 PM   #7
Member
 
Join Date: Apr 2014
Posts: 89
Overheating until...

Quote:
Originally Posted by Ida Ratherbe Camping View Post
Does any of this sound familiar to ya?



2009 ISB 6.7 overheating - iRV2 Forums

It does seem like a similar issue. The thread there is over 2 years old, but I'd be interested in understanding if the fan clutch replacement was from the top or from the bottom access to the engine. I'm working with a busy local shop, and the complexity will drive the time they need the rig, and, as a result, when I schedule the service. I'm not happy to limp along upon starting out, but I can stop before the temp gets too high and still make some of the trips we have planned in the coming weeks. Pretty much, that was the mechanic's suggestion for now..."Watch the temp and pull off under 230F...come back after Memorial Day when we can fit you in the schedule."

I'm also not convinced it's my fan clutch. The fan does run initially upon start up as if the fan engagement movement works OK, but the logic driving its activation is messed up...as if it doesn't get the message that the engine is hot and it should turn on.
__________________
Moose
2009 FR Berkshire 390BH
jbramhall is offline   Reply With Quote
Old 05-20-2014, 10:33 PM   #8
Senior Member
 
Join Date: Mar 2014
Posts: 1,748
Here is the procedure to check if your clutch fan is operating at proper efficiency. You will need two persons to do this simple check.
Start the engine and observe the clutch fan operating. (it's spinning)
While you are observing the rotating fan, have the second person shut off the engine.
The clutch fan should spin, no more than one to two and a half complete revolutions, before coming to a complete stop.
If your fan continues to free spin for more revolutions than specified, after shut off, your clutch fan is not operating within design perameters, and needs to be replaced.
The fan needs to pull enough air past the radiator to properly cool the coolant when it circulates through the radiator.

Let us know how this test turns out.
__________________
Still Kickin is offline   Reply With Quote
Old 05-20-2014, 10:35 PM   #9
Senior Member
 
Join Date: Mar 2014
Posts: 1,748
This test is for a belt driven clutch fan only.
__________________
Still Kickin is offline   Reply With Quote
Old 05-20-2014, 10:39 PM   #10
Senior Member
 
Join Date: Mar 2014
Posts: 1,748
Oh, and continued operation of your engine beyond normal operating temperature for repeated cycles, WILL cause serious engine damage, including but not limited too, head warpage, head gasket failure etc.
__________________

__________________
Still Kickin is offline   Reply With Quote
Reply

Tags
heating

Thread Tools
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



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:46 AM.