Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 03-11-2007, 07:00 AM   #1
Junior Member
 
Join Date: Jan 2004
Posts: 12
We recently bought an 03 Dolphin with an 8.1 Chevy engine. We often hear a loud roaring noise coming from the engine compartment. It sounds as if the engine is reving up but it is not that. It will do this for a minute or so then slowly fade away. I believe it is related to the fan clutch or engine cooling fan but the engine temp is normal. This is very annoying. What do you think it is and can it be stopped or remedied somewhat. Thanks for your help.
__________________

__________________
JimmyP 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 03-11-2007, 07:00 AM   #2
Junior Member
 
Join Date: Jan 2004
Posts: 12
We recently bought an 03 Dolphin with an 8.1 Chevy engine. We often hear a loud roaring noise coming from the engine compartment. It sounds as if the engine is reving up but it is not that. It will do this for a minute or so then slowly fade away. I believe it is related to the fan clutch or engine cooling fan but the engine temp is normal. This is very annoying. What do you think it is and can it be stopped or remedied somewhat. Thanks for your help.
__________________

__________________
JimmyP is offline   Reply With Quote
Old 03-11-2007, 07:42 AM   #3
Community Moderator
 
"007"'s Avatar


 
Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 26,762
Jim, you are correct they are your fans, the temp gage will not move much up or down from 3 o'clock which is normal for 8.1.
Make sure you have the correct level of fluid in your over flow tank for radiator and no blockage in front of your radiator.
Living in Florida and using AC will cause the fans to come on more than normal.
One other thing to check is your air dam to make sure most of the air is being forced thru your radiator if its torn around it your fans will come on more often.

Congrats on your new MH.
__________________
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
VISIT the NEWMAR QUICK TIPS & EASYMODS 1 & 2
QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
"007" is offline   Reply With Quote
Old 03-11-2007, 03:01 PM   #4
Senior Member
 
Horsepowerfan's Avatar
 
Workhorse Chassis Owner
Join Date: Sep 2003
Location: Weare, NH, USA
Posts: 239
Yessir, when that fan clutch engages it does make quite a roaring noise! Aside from the suggestions given by 007, if everything checks out OK, there's not much you can do about it and it is normal. My co-pilot here is asking, "are you talking about the loud noise that sounds like it's gonna blow up" usually just before cresting a hill?

There is mention of this noise in the Workhorse Owner's Manual which you may have received with your coach and also in the Workhorse Gas Motor Home Chassis Guide (which you can download for free from Workhorse.com. Click Here to link to the Workhorse Forum where you'll find information about this manual which is a great resource for the care and feeding of your Workhorse. )
__________________
Jim & Linda
'03 Winnebago Adventurer 35U (W22)
'06 Saturn Vue Toad
Horsepowerfan is offline   Reply With Quote
Old 03-11-2007, 03:57 PM   #5
Member
 
Join Date: Aug 2005
Posts: 88
Yes there are the two air conditioner fans that cycle on, make a fair amount of noise, and then fade away.
However, there is also, in addition to that noise, a very loud roar that sounds like things truly are going to come apart that has occurred on my coach in hot conditions and stop and go traffic. I am told that is the engine fan which is in behind everything you typically see. I was told that I was probably loosing a bearing or water pump. Nothing dire has happened in the last 7-8K miles since I last heard it, so I suspect it is simply the engine fan running in addition to the air conditioner fans. No workhorse center can find a cause, nor get it to happen for them, so it is not something I can have fully analyzed or repaired.
Perhaps you have experienced this same noise. It is NOTICEABLY different than the typical fan cycling noise.
__________________
KTYSTR is offline   Reply With Quote
Old 03-12-2007, 03:58 PM   #6
Senior Member
 
Workhorse Chassis Owner
Join Date: Feb 2005
Location: western wa.
Posts: 539
its the big white clutch fan between your engine and radiator. yes its too loud and yes it is normal. only fix would be more sound insulation. dave
__________________
2007 NRV DOLPHIN LX 6342

WORKHORSE W-22
cannon man is offline   Reply With Quote
Old 10-06-2007, 05:14 AM   #7
Senior Member
 
Rocky Larson's Avatar
 
Workhorse Chassis Owner
Join Date: Aug 2007
Posts: 604
I am working on this issue today, again. Due to your discription I located the white fan by looking over the front tires (both sides)at the rear of the radiator. A shroud seam is double fastened on each side of the fan.(maybe more seams I can't see). With the engine running and howling away I touched the shroud in several places. Each touch eliminated the sound completely. For everyone that went the same route I did, fruitlessly I might add, looking for the solution forwards in the engine compartment, or with "It's normal" explainations, this might be the fix. I'll try tightening or adding fasteners and report on the results.
__________________
04 Allegro 30DA, WH 8.1, Banks, 03 Honda CRV/2012 Jeep Liberty Jet, Brake Buddy Adv Select, 300watts Solar, 7 Group 31 Optima AGMs, 2000watt PSW inverter
"Philippians 4:11-13 KJV"
Rocky Larson is offline   Reply With Quote
Old 10-06-2007, 09:47 AM   #8
Senior Member
 
Oemtech's Avatar
 
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,243
Send a message via AIM to Oemtech
Be sure the lower half of the shroud is screwed to the radiator frame. Failure to do so could cost you a radiator. Here is what happens when it is not screwed drown.


Note - I added the screw while I waited for parts.
__________________
Dale
AKA - Oemy
Oemtech is offline   Reply With Quote
Old 10-06-2007, 10:56 AM   #9
Senior Member
 
Rocky Larson's Avatar
 
Workhorse Chassis Owner
Join Date: Aug 2007
Posts: 604
Thanks for the great picture. Saves me the trouble of crawling back under with my camera. The hole in my shroud was about three times the one in your picture. I trimmed up the rough edges and cable tied it so it stopped rubbing. No more noise. The screw will be in place tomorrow. Thanks again
__________________

__________________
04 Allegro 30DA, WH 8.1, Banks, 03 Honda CRV/2012 Jeep Liberty Jet, Brake Buddy Adv Select, 300watts Solar, 7 Group 31 Optima AGMs, 2000watt PSW inverter
"Philippians 4:11-13 KJV"
Rocky Larson is offline   Reply With Quote
Reply



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
lOUD NOISE OVER 45 MPH RDK MH-General Discussions & Problems 15 01-17-2008 10:39 AM
Loud Engine Noise av42 Workhorse and Chevrolet Chassis Motorhome Forum 12 01-12-2008 02:24 PM
slide making loud noise going down road itascasr Winnebago Industries Owner's Forum 2 05-03-2007 06:09 AM
Loud Buzzer Noise - How To Disconnect? Eusefull Alpine Coach Owner's Forum 3 03-31-2007 11:59 AM
Loud Noise at startup Oemtech Workhorse and Chevrolet Chassis Motorhome Forum 2 07-24-2005 08:10 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:00 AM.


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