RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Tiffin Owner's Forum
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 12-26-2012, 05:46 PM   #1
Senior Member
 
gemini5362's Avatar
 
Tiffin Owners Club
Freightliner Owners Club
Join Date: Apr 2012
Posts: 2,079
Engine Preheat vs Engine Block heater

My 2005 allegro bus 38 dhp has an engine preheater switch on the drivers control console. I have my bus plugged into shorepower. I turned the switch on last night because I wanted to start it today and prepare to go on a trip. I had it on for almost 22 hours went to start the bus and it did not want to start. The weather last night got down to 20 degrees and it was 35 today when I went to start it in the late afternoon. In the power bay right above the electric cord reel is a ac plug in with a note attached calling it a block heater and tellling how long it has to be on versus outside temp. I plugged it in and waited about an hour then tried the bus and it started. What does the engine preheat switch do versus a block heater. How effective is the engine preheat switch it did not seem to help very much when I used it overnight.
__________________

gemini5362 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 12-26-2012, 09:09 PM   #2
Senior Member
 
kewag's Avatar


 
Tiffin Owners Club
Join Date: Jul 2012
Posts: 290
Does the light come on when you enable the switch? Mine was wired wrong. Here is how to find out. When the eng preheat switch is enabled does the light on the switch light? If not turn the ignition key on and see if the light comes on. If this is the case, there is a terminal strip on the DS basement front compartment that is labled ignition and another labled battery. Move the wire labled eng preheat from ignition to battery. That is what was wrong with mine. Works fine since.
__________________

__________________
Karl and Janet
Tiffin Zephyr 45QDZ
Owens-Classic Trailer, with elevator and air ride
kewag is offline   Reply With Quote
Old 12-26-2012, 11:23 PM   #3
Senior Member
 
gemini5362's Avatar
 
Tiffin Owners Club
Freightliner Owners Club
Join Date: Apr 2012
Posts: 2,079
The light comes on when I turn the switch on. It does that whether the ignition is on or not.
gemini5362 is offline   Reply With Quote
Old 12-27-2012, 03:08 AM   #4
Senior Member
 
Tony Lee's Avatar
 
Join Date: Sep 2012
Location: Tasmania now, USA/Canada/Alaska in April
Posts: 2,472
Doesn't that switch control the outlet that the block heater plugs into?
__________________
Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
Tony Lee is offline   Reply With Quote
Old 12-27-2012, 03:58 AM   #5
Senior Member
 
palehorse89's Avatar
 
Newmar Owners Club
Join Date: Oct 2009
Posts: 8,700
Quote:
Originally Posted by gemini5362 View Post
My 2005 allegro bus 38 dhp has an engine preheater switch on the drivers control console. I have my bus plugged into shorepower. I turned the switch on last night because I wanted to start it today and prepare to go on a trip. I had it on for almost 22 hours went to start the bus and it did not want to start. The weather last night got down to 20 degrees and it was 35 today when I went to start it in the late afternoon. In the power bay right above the electric cord reel is a ac plug in with a note attached calling it a block heater and tellling how long it has to be on versus outside temp. I plugged it in and waited about an hour then tried the bus and it started. What does the engine preheat switch do versus a block heater. How effective is the engine preheat switch it did not seem to help very much when I used it overnight.
Do you have 2 different switches? one for engine preheat and one labeled engine heater? By the sounds of your post you only have a block heater and it has been unpluged in the electrical bay and you did not know it. I believe if a engine has a block heater it will not also have other means of heating the engine, and if it has other means of heating the coolant(aqua-hot etc.) it will not have a block heater.A block heater should keep a diesel engine about 120 deg-130 deg. in cold weather.
__________________
2000 Newmar MADP 4060, 350ISC, Spartan MM, IFS 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006Ultra & 1989 Springer
palehorse89 is offline   Reply With Quote
Old 12-27-2012, 04:01 AM   #6
Senior Member
 
palehorse89's Avatar
 
Newmar Owners Club
Join Date: Oct 2009
Posts: 8,700
Quote:
Originally Posted by gemini5362 View Post
The light comes on when I turn the switch on. It does that whether the ignition is on or not.
The switch is 120vac and you key switch is 12 vdc, the light is just a indicator light so you don't forget your block heater is on and running.
__________________
2000 Newmar MADP 4060, 350ISC, Spartan MM, IFS 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006Ultra & 1989 Springer
palehorse89 is offline   Reply With Quote
Old 01-02-2013, 07:27 PM   #7
Senior Member
 
gemini5362's Avatar
 
Tiffin Owners Club
Freightliner Owners Club
Join Date: Apr 2012
Posts: 2,079
Quote:
Originally Posted by palehorse89 View Post
Do you have 2 different switches? one for engine preheat and one labeled engine heater? By the sounds of your post you only have a block heater and it has been unpluged in the electrical bay and you did not know it. I believe if a engine has a block heater it will not also have other means of heating the engine, and if it has other means of heating the coolant(aqua-hot etc.) it will not have a block heater.A block heater should keep a diesel engine about 120 deg-130 deg. in cold weather.
you are correct and I feel kind of dumb for not thinking about that . When I bought the coach i saw the cord labeled block heater hanging above my input power cord reel. I have a block heater on my diesel pickup and it is just routed where it can be plugged into an extension cord when needed. I assumed that was the way with the block heater. When I read in the owners manual about the pre heater switch I did not put two and two together and realize the switch controlled the outlet by the hanging block heater cord. I bought my unit used and evidently someone unplugged the block heater for some reason. I checked the receptacle and it is controlled by the switch on the console. I had used my block heater previously last week when we had below freezing temperatures and I plugged the block heater in the night before I went to start my coach.

Thank You for solving my mystery and maybe someone else will have the same question I had and find the answer here
gemini5362 is offline   Reply With Quote
Old 01-02-2013, 07:35 PM   #8
Senior Member
 
Mr_D's Avatar
 
Country Coach Owners Club
Winnebago Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 35,965
Quote:
Originally Posted by gemini5362 View Post
you are correct and I feel kind of dumb for not thinking about that . When I bought the coach i saw the cord labeled block heater hanging above my input power cord reel. I have a block heater on my diesel pickup and it is just routed where it can be plugged into an extension cord when needed. I assumed that was the way with the block heater. When I read in the owners manual about the pre heater switch I did not put two and two together and realize the switch controlled the outlet by the hanging block heater cord. I bought my unit used and evidently someone unplugged the block heater for some reason. I checked the receptacle and it is controlled by the switch on the console. I had used my block heater previously last week when we had below freezing temperatures and I plugged the block heater in the night before I went to start my coach.

Thank You for solving my mystery and maybe someone else will have the same question I had and find the answer here
Our DSDP is the same way. Around here it is very rare for the temps to get down low enough to need to block heater so I unplugged mine and plug a light in that goes in the wet bay to add some heat there. If we ever trade or sell the rig I'll have to remember to plug the heater back in and avoid a situation like above.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU
Mr_D is online now   Reply With Quote
Old 01-03-2013, 03:14 PM   #9
Senior Member
 
palehorse89's Avatar
 
Newmar Owners Club
Join Date: Oct 2009
Posts: 8,700
I am glad this worked out for you, in the summer I unplug the block heater and we plug in a electric cord for outside lights and other things and then I can just use the switch inside to shut them off and on. Happy trails......
__________________

__________________
2000 Newmar MADP 4060, 350ISC, Spartan MM, IFS 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006Ultra & 1989 Springer
palehorse89 is offline   Reply With Quote
Reply

Tags
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


» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:14 PM.


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