Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Workhorse and Chevrolet Chassis Motorhome 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 08-14-2009, 01:54 AM   #1
Senior Member
 
Jackm's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2005
Posts: 627
Cruise Control and Faulty Dash AC Problem

Has anyone ever encountered a problem with the dash AC when using cruise control? In our 2004 Brave (W-20 chassis), we lose the AC whenever we use the cruise control. At first, I thought it might be a slipping belt but upon inspection, the belt is fine. It appears to be a glitch of some type. The technician asked us if the fan switched to defrost (when the AC quit working) but I didn't notice. Thanks.

Jack
__________________
2004 Winnebago Brave 34D with the usual add-ons
Jackm 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 08-14-2009, 05:48 AM   #2
Senior Member
 
Join Date: May 2006
Location: Holland, MI
Posts: 494
I noticed a different one with my cruise this past summer. When the cruise was on and I would turn on the wipers the cruise would drop off. This would only happen when the headlights were on. If I turned off the headlights everything was normal. I am beginning to think there is no normal on these things. The rain did keep the brakes from overheating so there was a good effect also.
__________________
1999 Damon Challenger 310 Ford chassis
bsinmich is offline   Reply With Quote
Old 08-14-2009, 09:44 AM   #3
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
On a gasser both Dash Air and Cruise share one thing.. A Vacuum line.. If you have a leak in your vacuum system then if the vacuum goes low

1: Cruise control will fail to work
2: Dash air will switch (ON GM Products) to Air Conditioner vents

(I don't know what it does on others, but since Defrost is the most important function.. One can but assume it should be the "Default" for lost air)

So Look for a broken, hose on your vacuum lines somewhere

NOTE: both CC and Dash air, on GM's are tapped off the brake booster at the booster right at the check valve.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 08-14-2009, 09:48 AM   #4
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
For Bsinmich.. Sounds like a ground fault to me

The cruise control measures voltage on both sides of the brake light switch

12 volt on the "hot" side is needed for the Cruise to engage

If there is voltage on the "Load" (Light side) of the switch, it disengages

If your wipers share a groung with one of the lamps it may be feeding back via the lighs themselves and shutting you down.

Of course, there are many other issues that can kill it too.

I mean they tell you "Do not use CC in the rain" Perhaps somebody made it so you can't.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 08-14-2009, 11:07 PM   #5
Senior Member
 
Jackm's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2005
Posts: 627
A vacuum line sounds like a good start but I wonder if a leak wouldn't show up under other operating conditions. In other words, wouldn't a (vacuum) leak impact the AC or the cruise control at other times?

Jack
__________________
2004 Winnebago Brave 34D with the usual add-ons
Jackm is offline   Reply With Quote
Old 08-15-2009, 06:42 AM   #6
Senior Member
 
Workhorse Chassis Owner
Join Date: Jun 2006
Location: Northwestern Montana
Posts: 3,454
Jack, your cruise control does not operate with a vacuum servo as older motorhomes do.

Dieselclacker
__________________
Dieselclacker
dieselclacker is offline   Reply With Quote
Old 08-16-2009, 11:24 PM   #7
Senior Member
 
Jackm's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2005
Posts: 627
Good point Dieselclacker. When I described the symptoms to a few technicians, they gave me that glazed over look you see whenever you present them with hard-to-diagnose electrical problems. It's too bad that RV manufacturers don't let you e-mail in specific questions to their technical staff. I'm sure someone at Winnebago or Workhorse has encountered something like this. The dilemma is the fact that I can't duplicate the problem in the shop. The RV has to be flying down the road for the (periodic) symptom to occur. Thanks for the comments though.

Jack
__________________
2004 Winnebago Brave 34D with the usual add-ons
Jackm is offline   Reply With Quote
Old 08-17-2009, 10:52 AM   #8
Community Moderator
 
"007"'s Avatar


 
Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,743
Jackm your brake switch which controls CC,steps and brake boost pump may need adjustment. The plastic plunger wears down over time and can be extended by removing wire clips to it, two, and turning plunger to extend it or your brake pedal is not returning to its full release position. Zerk fitting on bell crank need grease.
__________________
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans
VISIT the NEWMAR QUICK TIPS & EASYMODS 1 & 2
QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
"007" is offline   Reply With Quote
Old 08-17-2009, 11:30 AM   #9
Senior Member
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 1,029
Quote:
Originally Posted by "007" View Post
Zerk fitting on bell crank need grease.
That is not true any longer. The faulty braking system in the Workhorse chassis motor homes is due to sticking brake calipers.
abarkl is offline   Reply With Quote
Old 08-17-2009, 12:01 PM   #10
Senior Member
 
edgray's Avatar
 
Join Date: Oct 2002
Location: Madison, MS
Posts: 9,765
abarkl: This thread is about cruise control, and the return of the brake pedal certainly can affect CC operation. 007's suggestion to grease the bell crank zerk IS correct, and I cannot agree with your "no longer true" comment. IMO, any zerk can only benefit from an occasional shot of grease.

You are correct about the caliper pistons being determined as the "source" of the brake problem being discussed elsewhere, but that does NOT mean we should stop adding lube at all the zerk positions. ED
edgray is offline   Reply With Quote
Old 08-17-2009, 01:10 PM   #11
Senior Member
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 1,029
But how do I remove the words "Workhorse Chassis Owner" in the avatar area of my postings?

I never asked for it and I don't want to be associated.
abarkl is offline   Reply With Quote
Old 08-17-2009, 03:47 PM   #12
Senior Member
 
edgray's Avatar
 
Join Date: Oct 2002
Location: Madison, MS
Posts: 9,765
abarkl: your request has been handled.

As info, members can join or leave a "user group" by choosing an icon from the list shown while in their profile found under the user CP tab at the top of the page. ED
edgray is offline   Reply With Quote
Old 08-18-2009, 02:17 AM   #13
Senior Member
 
Jackm's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2005
Posts: 627
Thanks 007. I'll check out the brake switch plunger. On my 2004 W-20 chassis, there is no grease fitting on the brake bell crank. I do plan on adding them this summer. To lube the bell crank, you have to manually access the inner workings by lifting some part (I read this in the Users Manual). I appreciate the suggestions. I'll give it a shot.

Jack
__________________
2004 Winnebago Brave 34D with the usual add-ons
Jackm is offline   Reply With Quote
Old 08-18-2009, 09:37 AM   #14
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
Workhorse added the Zerk on the Bell Crank just prior to making my Motor home chassis (The MH is a 2005, the chassis was made Aug, 2004, per WH)

I checked
__________________
Home is where I park it!
wa8yxm 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
faulty dash heater awr Thor Industries Owner's Forum 1 02-18-2009 10:00 AM
Switch problem??? skigramp Winnebago Industries Owner's Forum 4 06-25-2007 11:25 AM
Atwood furnance problem Scott S RV Systems & Appliances 23 10-25-2006 03:59 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 04:23 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.