Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

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 08-06-2016, 06:34 PM   #1
Junior Member
 
Join Date: Aug 2016
Posts: 8
2000 National Tradewinds 300HP Cat Turbo Diesel

Just experienced a buzzing sound (sounds like low air buzzer???) under power going uphill on long grade. Quits under normal driving and minor grades. Anyone have similar experience to help diagnose possible cause. Runs great otherwise. No power loss, or other problem just the buzzer sound.

Thank you in advance for your help and input.

dwrodz
dwrodz 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 08-06-2016, 06:39 PM   #2
Member
 
dbywaters's Avatar
 
Newmar Owners Club
Join Date: Mar 2008
Posts: 66
Could it be your engine temperature? There is light and buzzer on my 03 freightliner with the CAT... possibly your light is out? The light and buzzer come on around 216 degrees..

Just a thought...
__________________
Doug Bywaters, Flint Hill, VA
2003 DSDP 4005 Freightliner chassis
dbywaters is offline   Reply With Quote
Old 08-06-2016, 06:49 PM   #3
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,311
Welcome to iRV2.

Our 300 HP Cat engines ( 3126B ) are similar with possible exception of radiator placement , mine is a side radiator .
If you're sure the noise is from the engine compartment , first thing I'd look at would be the clamps on the air intake system , from the turbo through the CAC ( Charge Air Cooler ) up to the intake manifold, because from your description , it sounds like one of the connections is leaking under max turbo boost.
Here's some info on our engines .
Attached Files
File Type: pdf 3126B specs.pdf (113.9 KB, 43 views)
File Type: pdf 3126B Heui Engines.pdf (168.7 KB, 35 views)
File Type: pdf 3126B no start.pdf (130.3 KB, 36 views)
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 08-06-2016, 06:54 PM   #4
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,311
Quote:
Originally Posted by dbywaters View Post
Could it be your engine temperature? There is light and buzzer on my 03 freightliner with the CAT... possibly your light is out? The light and buzzer come on around 216 degrees..

Just a thought...
After seeing this , I guess the question is .
Is your Tradewinds on a Freightliner chassis?
Rear radiator or side rad?
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 08-06-2016, 06:58 PM   #5
Senior Member
 
gatorcq's Avatar
 
Freightliner Owners Club
Join Date: Apr 2004
Location: Show Low Az
Posts: 1,321
Why didn't you take a close look at your gauges first.
Next did you look at your dash lights?
Have you ever heard this same sounding buzzer before?
Like prior to starting, or after it has been sitting for a while?
__________________
Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100
gatorcq is offline   Reply With Quote
Old 08-07-2016, 07:04 AM   #6
Senior Member
 
Join Date: Apr 2015
Posts: 151
I had the same problem and it was the water pump belt was loose, they adjusted it and all is OK
Bob
littlebob is offline   Reply With Quote
Old 08-07-2016, 08:52 AM   #7
Junior Member
 
Join Date: Aug 2016
Posts: 8
Thanks for all the great input. No indication of problem from warning lights or gauges. I will check into all the options.

Best, David
dwrodz is offline   Reply With Quote
Reply

Tags
cat, diesel, national



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
1999 National RV 7372 Tradewinds,300hp Cat. On a Mission Class A Motorhome Discussions 21 07-01-2013 08:23 AM
2000 National Tradewinds - Dash A/C Ron13Bev National RV Owner's Forum 2 05-28-2012 10:06 AM
Onan Generator in 2000 National Tradewinds rkscott National RV Owner's Forum 4 07-01-2011 02:14 AM
1999 tradewinds comm. conector for 300hp cat bhoward Caterpillar Engine Forum 6 12-08-2010 04:10 PM
Cat C7 (300HP-'07 Bounder) SSteve Caterpillar Engine Forum 2 06-15-2008 05:15 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 06:04 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.