Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 11-18-2017, 05:58 PM   #1
Junior Member
 
Join Date: Jan 2016
Posts: 21
Diesel engine heater

How do you use the engine heater? Does the switch key need to be on? How long do you leave the heater on before you crank the engine? What should the ambient temp be before you use the heater? This on a 380HP cummins. TK!
__________________

__________________
Banner Elk 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 11-18-2017, 06:09 PM   #2
Senior Member
 
Steve Ownby's Avatar
 
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,397
Diesel engine heater

Quote:
Originally Posted by Banner Elk View Post
How do you use the engine heater? Does the switch key need to be on? How long do you leave the heater on before you crank the engine? What should the ambient temp be before you use the heater? This on a 380HP cummins. TK!


Iím a believer in giving the engine & starting system all the help available. In that regard, anytime the ambient will be down in the 30s or lower, I turn on the engine heat the night before. The typical engine heater is a 120 VAC resistance heater mounted in the coolant system. The heater operates independently of the ignition.
__________________

__________________
Steve Ownby
Full time since 2007
2003 Monaco Signature
Steve Ownby is offline   Reply With Quote
Old 11-18-2017, 06:17 PM   #3
Senior Member
 
nehog's Avatar
 
Nor'easters Club
Holiday Rambler Owners Club
Join Date: Oct 2016
Location: Monadnock Region of New Hampshire
Posts: 417
Are you referring to the block heater? I'd suggest 3 hours on when above 30 degrees, 8 hours below 0, and somewhere between when 0 - 32 degrees.
__________________
My name is Peter, and I'm never going to grow up.
- Winnebago Era 2010 Class B
- Holiday Rambler 2006 Ambassador 40-DFD Class A
nehog is offline   Reply With Quote
Old 11-18-2017, 06:20 PM   #4
Senior Member
 
HerbZilla's Avatar


 
Nor'easters Club
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Feb 2014
Location: Lake Katrine, NY
Posts: 243
Cummins has in their manual to run the block heater at least 2 to 4 hours before starting the engine. Depending on the year of your coach the block heater will be on a wall mounted rocker switch or incorporated into your RV digital control for your accessories. To me if I know I am going to use it the next day and it is 40 or below I will turn it on. It will not hurt anything. I wouldn't leave it on for weeks at a time if you are just sitting in a campground because mice will find the engine to be a nice cozy winter bed. The key switch does not need to be on since it is run off of 120 Volts.
__________________
Herb, Anna and Lil Herb
2018 Fleetwood Discovery LXE 40G

HerbZilla is offline   Reply With Quote
Old 11-18-2017, 11:41 PM   #5
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,712
Quote:
Originally Posted by HerbZilla View Post
Cummins has in their manual to run the block heater at least 2 to 4 hours before starting the engine. Depending on the year of your coach the block heater will be on a wall mounted rocker switch or incorporated into your RV digital control for your accessories. To me if I know I am going to use it the next day and it is 40 or below I will turn it on. It will not hurt anything. I wouldn't leave it on for weeks at a time if you are just sitting in a campground because mice will find the engine to be a nice cozy winter bed. The key switch does not need to be on since it is run off of 120 Volts.
My Cummins owners manual has a chart displaying temps to use block heater and suggested run times, just as it has a chart showing oil grades to use in different temperature ranges.
One important thing it also says is not to let the engine idle more than 10 minutes before driving, does more harm than good.
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN is offline   Reply With Quote
Old 11-18-2017, 11:54 PM   #6
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 9,306
"Banner Elk".....How your engine block heater is turned on, is dependent upon the coach builder. On many, there is a switch on the dash. On my Monaco Diplomat and on my Newmar Dutch Star, there is a plug in the engine bay that needs to be plugged in for the block heater to operate, no switches.

So......you need to see how yours works. When plugged into shore power, I'll usually turn it on the night before we're leaving. When boon docking, I turn it on in the morning for 2 hours, while we're running the generator prior to departure.

For those with hydronic heating, some coaches will heat the engine via the hydronic heater. My coach heats hot water with the engine running, but will not heat the engine via the heater, unless I add an optional pump and switch.
__________________
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is offline   Reply With Quote
Old 11-19-2017, 01:03 AM   #7
Senior Member
 
guardrail53's Avatar


 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 2,090
The newer diesel engines will start just fine W/Out the block heater plugged in, just let the pre-heat (Grid heaters, or Glow plugs) work as it needs before you turn the key to start! The block heaters are for below 20* or colder temp's and if you know the temps are going to get colder than 20*, then plugging it in after you shut the motor off the night before, it will keep your motor warm all night! (It works much better if you start with a warm motor, and does not have to work as hard to keep the motor warm!) Just make sure you unplug it before you fire up in the morning! The block heaters will not heat the coolant in the radiator or the far reaches of the motor, and if you start before unplugging, that cold coolant will cause the block heater to short out, and you will be replacing it for sure, and it is a messy job! The block heaters are all 1500 Watts, so if you are paying the power bill, and you leave it on all night, you will notice the increase in the bill! Like trying to heat your MH with a hair dryer! Rail!
__________________
Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed, 2001 PT Cruiser, "Bailey"
guardrail53 is online now   Reply With Quote
Old 11-19-2017, 05:44 PM   #8
Senior Member
 
nehog's Avatar
 
Nor'easters Club
Holiday Rambler Owners Club
Join Date: Oct 2016
Location: Monadnock Region of New Hampshire
Posts: 417
Quote:
Originally Posted by Dutch Star Don View Post
... On my Monaco Diplomat and on my Newmar Dutch Star, there is a plug in the engine bay that needs to be plugged in for the block heater to operate, no switches...
My Ambassador, open the rear doors, and the outlet is at the top, and the cord is hanging down. Just plug in and you're set, and as mentioned, unplug before starting. My block heater outlet does have its own circuit breaker as well in the AC breaker panel.

Quote:
Originally Posted by guardrail53 View Post
... Like trying to heat your MH with a hair dryer! Rail!
So that's what I've been doing wrong!
__________________
My name is Peter, and I'm never going to grow up.
- Winnebago Era 2010 Class B
- Holiday Rambler 2006 Ambassador 40-DFD Class A
nehog is offline   Reply With Quote
Old 11-20-2017, 08:44 AM   #9
Senior Member
 
Cat320's Avatar
 
Fleetwood Owners Club
American Coach Owners Club
Join Date: Mar 2011
Posts: 4,761
I have a plug in the last storage bay, street side, that must be plugged in, and a switch turned on in the rear of the coach to activate the plug. I use a household timer, and set it for four hours prior to scheduled departure to come on.

BTW, the Cummins manual says to use preheat if the temperature is 40 or below.
__________________
2014 American Eagle 45T
DD 500
Pulling a Honda CRV
Cat320 is offline   Reply With Quote
Old 11-20-2017, 08:50 AM   #10
Senior Member
 
znt1186's Avatar
 
Join Date: Nov 2014
Posts: 490
Mine plugs into an outlet under the bed and has the switch mounted at the foot of the bed support box. Seems they could be about anywhere depending on manufacturer.
__________________
Zeb and Teena
2003 Allegro Bus, 2013 Ford Edge
znt1186 is offline   Reply With Quote
Old 11-20-2017, 08:55 AM   #11
Senior Member
 
Freightliner Owners Club
Join Date: Apr 2004
Location: Apache Junction, Az
Posts: 703
If it will be 20 degrees or less, I do not use it. The inlet heater is all that is required. There is a specific algorithm, for all Diesels based on Air and Coolant temperature.
The inlet heater can stay on for up to 30 Seconds. This algorithm, also prevents anyone from just taking off at a high rate of RPM, as it will limit you.
__________________
Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_1600W Solar_880 AmpHr
Magnum_MS2812
gatorcq is offline   Reply With Quote
Old 11-20-2017, 12:41 PM   #12
Member
 
ArgoPilot's Avatar
 
Join Date: Oct 2017
Location: Oregon
Posts: 49
Quote:
Originally Posted by Ray,IN View Post
My Cummins owners manual has a chart displaying temps to use block heater and suggested run times, just as it has a chart showing oil grades to use in different temperature ranges.
One important thing it also says is not to let the engine idle more than 10 minutes before driving, does more harm than good.
I'm familiar with that regarding newer engines with particulate filters and DEF systems, but I was always under the impression that you would want your engine oil (and tranny fluid) closer to operating temps before putting a drive load on either. Is this no longer the case, or am I just thinking of older engines?
__________________
Home sweet home...wherever we roam!
1994 HR NAVIGATOR 38WB
Rechristened 'The Argo'
ArgoPilot is offline   Reply With Quote
Old 11-20-2017, 12:48 PM   #13
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 9,306
*Side Note*.......For those who have the exterior plug in the engine bay, don't forget that it's there, it can often be handy for plugging in extension cords for things operated outside the coach, especially since it has it's own circuit breaker.
__________________
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is offline   Reply With Quote
Old 11-20-2017, 03:16 PM   #14
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,712
Quote:
Originally Posted by ArgoPilot View Post
I'm familiar with that regarding newer engines with particulate filters and DEF systems, but I was always under the impression that you would want your engine oil (and tranny fluid) closer to operating temps before putting a drive load on either. Is this no longer the case, or am I just thinking of older engines?
No longer the case. A long warm-up was necessary 50-60 years ago, technology remedied that. The Cummins engine owners manual says to avoid a heavy engine load in cold weather until coolant reaches normal operating temp. Does your owners manual address this?
__________________

__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN is offline   Reply With Quote
Reply

Tags
diesel, engine, heat, heater



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
Diesel engine block heater tizzyfit Newmar Owner's Forum 7 03-17-2017 08:26 AM
Engine Preheat vs Engine Block heater gemini5362 Tiffin Motorhomes Owners Forum 8 01-03-2013 04:14 PM
Diesel engine pre-heater RonK iRV2.com General Discussion 9 01-04-2012 10:37 PM
Engine Heater vs Block Heater patmsp Monaco Owner's Forum 4 09-29-2010 01:51 AM
Diesel owners and Ultra Low Sulpher Diesel Fuel CyberVet65 Just Conversation 5 02-03-2007 09:31 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:39 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.