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 08-05-2015, 05:17 PM   #1
Junior Member
 
Join Date: Jul 2015
Posts: 15
Lost Ignition Power 7.4L Workhorse in 2000 Thor Hurricane (pics)

Engine was idling. When I closed the door and the step retracted the motor stopped. All power to the ignition switch was gone. No guages, fuel pump sounds, etc. I also noticed that the green LED next to the Chassis Disconnect Switch was out. Click image for larger version

Name:	IMG_20150805_131513091_HDR.jpg
Views:	314
Size:	253.6 KB
ID:	102178
Eventually I discovered a blown (melted) fuse up front in the Battery Control Center. Click image for larger version

Name:	IMG_20150805_133452802b.jpg
Views:	363
Size:	251.9 KB
ID:	102177 Based on the color of the plastic blob I guessed it had been a 20 amp where a 10 amp was called for.
I replaced it with a 10 amp fuse. It's the one in the forefront of the pic at the end of the green leads. This gave me a green LED next to the Chassis Disconnect Switch again but when I turned on the ignition I only had power for about 5 seconds before the fuse blew again. If I install a 15 amp fuse (I know -not recommended) then I can get a few cranks of the starter before it blows.

edit: the Generator cranks and starts just fine.

How can I find out what circuit this fuse belongs to? Is there a diagram out there for an Intellitec 524-400 BCC?
Did the step retracting have anything to do with the engine stopping, or was it a crazy simultaneous event?


BTW- new to the forum, to class A ownership. I have lurked on the forums for a couple weeks and got a bunch of great information. I must offer thanks to all the members who so willingly assist others.
__________________

__________________
jones101 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 08-05-2015, 06:04 PM   #2
Senior Member
 
Denniscw's Avatar
 
Workhorse Chassis Owner
Join Date: Sep 2012
Location: Cumming, GA
Posts: 408
Just a thought. But if you look under near the steps there should be a connector for the steps. DO NOT LAY UNDER THE STEPS. Unplug the connector. If the steps are the problem the fuse should not blow.
__________________

__________________
Denniscw
2011 Serrano 31X, 2006 CR-V
Denniscw is offline   Reply With Quote
Old 08-05-2015, 06:16 PM   #3
Junior Member
 
Join Date: Jul 2015
Posts: 15
Quote:
Originally Posted by Denniscw View Post
Just a thought. But if you look under near the steps there should be a connector for the steps. DO NOT LAY UNDER THE STEPS. Unplug the connector. If the steps are the problem the fuse should not blow.
Thanks for the suggestion. I just tried that but it still blows the fuse.

Looking at the way the fuse is connected in the BCC using wires rather than just pushing it in the board, I wonder if someone has "jumped" or modified things in the past?

I wish there was literature telling me what fuse # related to which circuit. I spoke with Thor today. They sent what they had, but it was not helpful to this situation. Maybe I'll try calling Intellitec in the morning.
__________________
jones101 is offline   Reply With Quote
Old 08-05-2015, 06:46 PM   #4
Senior Member
 
Johndale's Avatar


 
Winnebago Owners Club
Join Date: Sep 2013
Location: Ft Worth texas
Posts: 963
Lost Ignition Power 7.4L Workhorse in 2000 Thor Hurricane (pics)

Why do the have a jumper wire for the fuse. That tells me they had an issue with the board and rigged it. I would remove the board and look at the backside.
Re looking at that board it looks like they added more wires to that board. Do you have a self start feature on your RV.


Sent from my iPhone using iRV2 - RV Forum
__________________
2003 Sightseer 33L
Ford F53
Johndale is offline   Reply With Quote
Old 08-05-2015, 08:12 PM   #5
Junior Member
 
Join Date: Jul 2015
Posts: 15
Quote:
Originally Posted by Johndale View Post
Why do the have a jumper wire for the fuse. That tells me they had an issue with the board and rigged it. I would remove the board and look at the backside.
Re looking at that board it looks like they added more wires to that board. Do you have a self start feature on your RV.
Thanks Johndale. I don't have a self start feature....as far as I know. I bought it from a private party who had not used it much and did not know much about it. I hoped that the giant stack of manuals would come in handy but there were not any schematics to be found. I can tell you all you want to know about recording your favorite shows on the VCR however.

I can't help but think there is a relationship to the step. There's some circuit that tells the step to retract when the ignition is on. Perhaps a short in that would cause the fuse in question to blow. Seems odd to think that an electric step can make you dead in the water. I'm just glad it happened in my driveway.
__________________
jones101 is offline   Reply With Quote
Old 08-05-2015, 09:43 PM   #6
Senior Member
 
mgscott4's Avatar
 
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./Pollock, LA.
Posts: 1,549
You could go under your steps and unplug the 4 pin connector to the steps and see if it still blows the fuse.

I do know that there are 2 fuses for the Kwikee steps, a 20 amp and a 5 amp. If the 20 amp blows the steps do not work. The 5 amp is the switch fuse, if it blows, the steps open and close with the door, no matter what position the switch is in.

It is scary to think that one 10 amp fuse blows and shuts down the engine, Something must have been rewired. I would install a jumper across the chassis disconnect relay so that it never disconnects. My BCC manufactured by "Custom RV Products" has been recalled and the fix was to move a wire from switched to unswitched to effectively eliminate the disconnect relay. If you want to store the RV, get a wrench and remove the negative battery wiring.

Here some light reading that may help.

Battery Disconnect problem, 2006 Hurricane 34N with FW-0675 BCC made by Intellitec.

Thor Battery Control Center Failure Recall
__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 132K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, 735W Solar Morningstar MPPT-60, WG T4 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
mgscott4 is offline   Reply With Quote
Old 08-06-2015, 09:37 AM   #7
Senior Member
 
mgscott4's Avatar
 
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./Pollock, LA.
Posts: 1,549
Moderator---Double post, in the Workhorse section too.
__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 132K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, 735W Solar Morningstar MPPT-60, WG T4 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
mgscott4 is offline   Reply With Quote
Old 08-06-2015, 11:23 AM   #8
Junior Member
 
Join Date: Jul 2015
Posts: 15
Quote:
Originally Posted by mgscott4 View Post
You could go under your steps and unplug the 4 pin connector to the steps and see if it still blows the fuse.

I do know that there are 2 fuses for the Kwikee steps, a 20 amp and a 5 amp. If the 20 amp blows the steps do not work. The 5 amp is the switch fuse, if it blows, the steps open and close with the door, no matter what position the switch is in.

It is scary to think that one 10 amp fuse blows and shuts down the engine, Something must have been rewired. I would install a jumper across the chassis disconnect relay so that it never disconnects. My BCC manufactured by "Custom RV Products" has been recalled and the fix was to move a wire from switched to unswitched to effectively eliminate the disconnect relay. If you want to store the RV, get a wrench and remove the negative battery wiring.

Here some light reading that may help.

Battery Disconnect problem, 2006 Hurricane 34N with FW-0675 BCC made by Intellitec.

Thor Battery Control Center Failure Recall

Thanks mgscott4!
I'd rather do a manual battery disconnect if the trade-off is something like this.

I've been thinking about other variables that could contribute to this. I had just changed the serpentine belt. I don't recall having been too rough in there or bumping up against any wires. Once the belt was installed I ran the engine for 20 seconds to confirm the belt was seated and rolling smooth. Then in preparation for a throttle body cleaning I replaced the doghouse and started the engine again to allow it to warm up. It had been running for about a minute when I exited the coach, the step closed and simultaneously the motor quit.
So I wonder, did the steps have anything to do with it? Or perhaps I bumped something during the belt change that would cause this fuse problem? Perhaps since the fuse they had in was too heavy for the circuit, it took a while (building heat) to finally blow/melt and that's why the motor ran for a minute or so before stopping.

I've also read about ignition switch failures but I'm not sure that's where I should go yet.

I'm also keeping in mind that the LED indicator for the Chassis disconnect switch on the "Battery Storage Control" panel is only illuminated when the fuse in question is intact. How does that relate to power to the ignition switch? Could the disconnect switch have gone bad? If so, can I bypass?
__________________
jones101 is offline   Reply With Quote
Old 08-06-2015, 05:05 PM   #9
Junior Member
 
Join Date: Jul 2015
Posts: 15
Well I learned a couple things.
1. someone has "rigged" a bypass of sorts which has failed. The jumper with the fuse in question goes from a 12v source (Converter relay) to the hot side of the fuse row on the printed board essentially back feeding voltage to the rest of the system.
2. The Battery Disconnect seems to have been replaced with a standard solenoid. I think the one on the right should be the same part as the one on the left. (see pic)


Now I wonder... How can I bypass the entire Chassis battery switching system? I am glad to remove the negative terminal during long term storage. I would like to retain the ability to charge the Chassis battery when I'm on shore power.
Attached Thumbnails
Click image for larger version

Name:	5300524.jpg
Views:	3278
Size:	205.2 KB
ID:	102310   Click image for larger version

Name:	IMG_20150806_130522703b.jpg
Views:	196
Size:	286.4 KB
ID:	102311  

__________________
jones101 is offline   Reply With Quote
Old 08-06-2015, 06:02 PM   #10
Junior Member
 
Join Date: Jul 2015
Posts: 15
I think it might be as simple as a bad solenoid causing the fuse to blow. (see video)
The thing is, I don't think that's the right part. I think it's supposed to be the Intellitec switch. Maybe a tech or DIY did a backyard bypass when they could not quickly get the right part. I've ordered the part and will install it where it should be. Granted, this correct part is around $60 where a generic solenoid is about $10.
What remains to be seen is if there is another short somewhere in the system that I will discover upon re-energizing.
__________________
jones101 is offline   Reply With Quote
Old 08-07-2015, 06:56 PM   #11
Junior Member
 
Join Date: Jul 2015
Posts: 15
I got the right part (Battery Disconnect Relay) and installed it. I was careful to test several recommended circuits before I energized it.
Once it was powered up I had my wife on the switches by the steps and my volt meter ready at the board. There are test points in the upper left of the board where one can confirm voltage is momentary and polarity is correct. Both the coach and chassis control circuits tested out fine.

I guess the long and the short of it is that the previous owner had a Battery Disconnect Relay failure and replaced it with a common solenoid. He then back-fed it with power in an attempt to keep it energized all the time.
I still don't know why it failed at the moment the steps retracted, but I'm SO glad it was in my driveway right next to my toolbox!

Thanks to all who contributed, spending time helping with suggestions, links, and diagrams. I'm glad I found the community!
__________________

__________________
jones101 is offline   Reply With Quote
Reply

Tags
7.4, bcc, hurricane, ignition, intellitec, power, step, thor, workhorse



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
Lost House power to entire coach and Engine Comm failure jeaux Monaco Owner's Forum 10 02-24-2015 12:51 PM
TV AMP lost power. rodallg Class A Motorhome Discussions 8 12-02-2014 08:59 AM
Bounder: Lost electric starting power after disconnecting landline. desertrat84 Fleetwood Products Owner's Forum 4 11-30-2014 08:05 AM
Help...power to plugs lost garth333 Country Coach Owners Forum 8 11-17-2014 09:59 PM
Lost electrical power bcasford RV Systems & Appliances 6 11-05-2014 08:21 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:36 PM.


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