Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-19-2007, 01:34 PM   #1
4 Rivet Member
 
outofcontrol's Avatar
 
1996 28' Excella
Portland , Oregon
Join Date: Jan 2006
Posts: 316
Images: 1
Blog Entries: 7
speedometer and cruise

Today I decided to attack my spedo problem.

History: the cruise control stopped working on one trip, then the next weekend the spedometer stopped working.

Today: I pulled the cable off the tranny and put my cordless drill on the end of the inner cable to confirm that the cable had broken somewhere, and I was surprised that it was registering speed on the dash.

Notes: the cable comes off the tranny and goes into a little box. (I assume this is some sort of Cruise control part) Then another cable comes out of the box and goes to the dash.

Question: Can I assume that the problem is in the tranny? or is there some function that happens in the CC box that would inturrupt the "signal" when there is vacuume?

I know it sounds paranoid, but I want to bounce this idea off someone else before I start diving into the tranny.

Thanks in Advance!!

-KM
__________________

__________________
1996 Airstream Excella 28'
2007 GMC Duramax 4x4 CCSB
outofcontrol is offline   Reply With Quote
Old 02-19-2007, 01:41 PM   #2
Rivet Master
 
Fyrzowt's Avatar
 
2000 25' Safari
West of Fort Worth , Texas
Join Date: Aug 2006
Posts: 6,697
Images: 8
I'm not familiar with that particular system, but I would not head straight for the tranny.
Two causes come to mind, somewhat related. There is a good chance that a plastic gear has stripped, either where the cable enteres the tranny, (usually an easy fix) or you may have a gear in the C/C unit stripped.
I would remove the cable at the tranny and try the drill procedure again, to check connectivity through the C/C unit.

Edit: after re-reading your post, I see this is where you started. Check the plastic gear inside the tranny where the cable attaches. After the cable is off, you should be able to pull the gear straight out. May have to carefully use needle nose plyers.
__________________

__________________
Fyrzowt is offline   Reply With Quote
Old 02-19-2007, 02:08 PM   #3
Rivet Master
 
maxandgeorgia's Avatar
 
1995 30' Limited
Ashland , Missouri
Join Date: Jul 2003
Posts: 2,610
Hmm, and I thought this was going to be about swimsuits and the Bahamas (I'll be serious now. Sorry.) ~G
__________________
maxandgeorgia
1995 Airstream Classic Limited 30' ~ Gypsy
1978 Argosy Minuet, 6.0~Minnie/GPZWGN
Chev Silverado 2500HD Duramax/Allison, 4X4, Crew Cab
WBCCI #5013 AIR #2908
WDCU
Go, Mizzou...Tigers on the prowl!
maxandgeorgia is offline   Reply With Quote
Old 02-19-2007, 04:58 PM   #4
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,192
IIRC, there is one or two small bolts holding a small housing in the tailshaft of the transmission where the speedometer cable goes. When you undo it/them, you can wiggle the housing out, then remove the driven gear. Note the color, it is important that you get the same color gear to go back in, or else the speedometer/odometer may not read correctly. While you have the gear out, look carefully into the hole where the gear goes. There is another gear inside, also plastic, and if it is damaged you should take the moho to a repair shop to have that replaced (put it back together before driving). AIf nothing seems worn or broken, it is possible there is a problem at the other end of the cable, maybe in the "little box" you found. This may be an adapter a speedometer shop installed to get the speedometer to read accurately. If it is broken, you will need to take it to a speedometer shop for repair.
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 02-19-2007, 05:22 PM   #5
4 Rivet Member
 
outofcontrol's Avatar
 
1996 28' Excella
Portland , Oregon
Join Date: Jan 2006
Posts: 316
Images: 1
Blog Entries: 7
You guys are good.

I took the speedo drive gear (the green plastic gear in the tranny tailshaft) out - it was easy - and I slipped it over the end of the cable core, and it was obviously stripped out. I had to hunt around, but a speedo shop happened to have a box of used ones. I'm pretty sure that was the problem. Ever since I got this MH the speedometer has made noise, and I bet the dry cable was providing enough resistance that it wore out the speedo drive gear. While I was at it I also removed all of the cables and pulled the cores out and fully greased them.

Here's my theory on why the CC went out just before the speedo went out: As the speedo drive started to slip on the cable, it was enough to make the CC shut down with the inconsistant spinning of the core. Soon thereafter it totally stripped and stopped spinning altogether.

No test drive yet, but as soon as I can move a truck blocking the MH, I'll give y'all a report.

I just noticed that I titled this post "spedo" - nice.

-Kevin
__________________
1996 Airstream Excella 28'
2007 GMC Duramax 4x4 CCSB
outofcontrol is offline   Reply With Quote
Old 02-19-2007, 07:42 PM   #6
4 Rivet Member
 
outofcontrol's Avatar
 
1996 28' Excella
Portland , Oregon
Join Date: Jan 2006
Posts: 316
Images: 1
Blog Entries: 7
Test drive: speedo works, CC doesn't.

I only got up to 40mph to test it (rush hour) but I think it used to work down to 30 or 35.

-Kevin
__________________
1996 Airstream Excella 28'
2007 GMC Duramax 4x4 CCSB
outofcontrol is offline   Reply With Quote
Old 02-19-2007, 08:29 PM   #7
Rivet Master
 
safari57's Avatar
 
1951 21' Flying Cloud
1960 24' Tradewind
West Coast , BC
Join Date: Feb 2005
Posts: 3,790
Images: 10
Send a message via MSN to safari57
Having the speedo working is a big step forward. At least you are legal now. It will be interesting to learn whathe cruise problem is. I had an 82 Chev truck and the cruise on it would not work under 50mph. Other cars I've had worked from about 35 as you mentioned. Good luck and keep us posted.

Check out post #5 on the thread noted beloe - it may be relevant to your problem

454 engine vss
Barry
__________________
safari57 is offline   Reply With Quote
Old 02-19-2007, 10:27 PM   #8
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,192
The cruise problem could be a blown fuse, or maybe a bad brakelight switch. It could be more, but this is the simplest thing (and the cheapest).
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 02-19-2007, 10:34 PM   #9
Rivet Master
 
wheel interested's Avatar
 
2007 23' International CCD
Lapeer , Michigan
Join Date: Oct 2003
Posts: 7,039
Quote:
Originally Posted by maxandgeorgia
Hmm, and I thought this was going to be about swimsuits and the Bahamas (I'll be serious now. Sorry.) ~G
Drats! Me too, what a tease! We jumped in here fast enough eh Georgia?
__________________
Caroljb



photography
wheel interested is offline   Reply With Quote
Old 02-20-2007, 02:20 PM   #10
Rivet Master
 
maxandgeorgia's Avatar
 
1995 30' Limited
Ashland , Missouri
Join Date: Jul 2003
Posts: 2,610
That's right, Carol. I see I wasn't the only one with a funny bone about this ~G
__________________
maxandgeorgia
1995 Airstream Classic Limited 30' ~ Gypsy
1978 Argosy Minuet, 6.0~Minnie/GPZWGN
Chev Silverado 2500HD Duramax/Allison, 4X4, Crew Cab
WBCCI #5013 AIR #2908
WDCU
Go, Mizzou...Tigers on the prowl!
maxandgeorgia is offline   Reply With Quote
Old 02-20-2007, 05:09 PM   #11
Rivet Master
 
GlenCoombe's Avatar
 
1984 28' Funeral Coach
Belleview , Florida
Join Date: Jun 2005
Posts: 1,635
Images: 27
Quote:
Originally Posted by safari57
Having the speedo working is a big step forward. At least you are legal now.
Barry
Huh? What? You mean you've actually got to have a "working" speedo? How are they gonna check that? If a cop asks you "is everything working?" You have to reply, "yes, sir." Never offer to give them a ride to prove it.

I think you've got to have lights, (outside) brakes, and a horn. Oh, and in some states you've got to pass emissions. If you pass the tailpipe sniffer they never look inside the engine bay....

I'm sure you all will correct me if I'm wrong.
__________________
Glen Coombe AIR #8416
1984 28' Funeral Coach
Former Rolling Showroom & PuttLab (now party bus)
"I'm not an expert. But I did sleep in an Airstream last night."
GlenCoombe is offline   Reply With Quote
Old 02-20-2007, 05:10 PM   #12
4 Rivet Member
 
Robfike's Avatar
 
1986 34.5' Airstream 345
Speedway , Indiana
Join Date: Dec 2005
Posts: 421
Check to see if you have vacuum at the cruise actuator unit on top of the engine. I had some cruise problems and found that my problem was the loss of vacuum at the actuator. The original vacuum entrance step was screwed up and would leak off enough vacuum to keep the cruise from working.
You will have to drive with the engine cover off to do the check.
Good luck, Rob
__________________
Robfike is offline   Reply With Quote
Old 02-20-2007, 07:03 PM   #13
Rivet Master
 
safari57's Avatar
 
1951 21' Flying Cloud
1960 24' Tradewind
West Coast , BC
Join Date: Feb 2005
Posts: 3,790
Images: 10
Send a message via MSN to safari57
Hey Glen

As a driver frequently of mostly vintage cars the lack of a speedometer has never stopped me from from driving (in some cases for a long period of time) but it is certainly nice to have one working again when that happens. It just feels right. And I hate tickets because they suck good money out of my pocket that could have bought something else (like a new speedo cable) with that hard earned money. So, you are right, working lights, brakes and even glass are all the critical stuff that are visible and if missing draws official attention, but it just works out sometimes that you either don't have that pace car in front of you, or the pacer car driver turns out to be a wing nut going too fast and thus so are you. Not that that has ever happened either or at least that I'll admit in writing on a forum my wife might read.

Barry
__________________
safari57 is offline   Reply With Quote
Old 02-21-2007, 06:45 PM   #14
4 Rivet Member
 
outofcontrol's Avatar
 
1996 28' Excella
Portland , Oregon
Join Date: Jan 2006
Posts: 316
Images: 1
Blog Entries: 7
Legal??? that's the last of my concerns

I really don't need the speedo, and the next time it stops working I might just put some tape over it and write "SLOW". I just like to know if I need to put on the hazards because I'm going 15mph under.

Yes, it is nice to know my speed, and I guess I'm legal now, but I'd take functioning CC over functioning spedo any day.

1. brake switch - pretty sure it works because the brake lights work, but I'll check to see if that signal is getting to the CC box.
2. Fuse - that's easy to check, thanks.
3. vacuum lines - there are so many of them, and they all look like they leak, I'm suprised any of the vacuum stuff works. I might just replace all of it if it turns out to be a vacumm leak. There's a diaphram hooked to the throttle linkage that looks 30 years old....ok 26 years old, I'm sure this is the dealie bob that pushes on the throttle.

Can't I lift the rear axle to do the testing? sounds dangerous but I've done it with cars and stuff. What if I just lift one rear dual off the ground and block the other three corners?

I have a feeling my wife is going to tire quickly of driving around testing the CC.

Thanks for all your help you guys!
BTW, the test drive was fun - I've been starting the coach 1x a month since it's been sitting for the winter, but I felt like an actual drive was better for her. Scrapes all that rust off the rotors n stuff.

-Kevin
__________________

__________________
1996 Airstream Excella 28'
2007 GMC Duramax 4x4 CCSB
outofcontrol 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
Gear Vendors Finally Coming! noiva Mechanics Corner - Engines, Transmission & More... 173 11-13-2006 10:21 AM
I need a new speedometer for my '88 345 Mr. D Mechanics Corner - Engines, Transmission & More... 12 10-31-2006 04:39 PM
Z71 or Z85? River Rat Tow Vehicles 7 05-09-2003 05:40 PM
speedometer problems wb13798 Mechanics Corner - Engines, Transmission & More... 10 04-08-2003 09:06 PM
Speedometer Problems ViewRVs Mechanics Corner - Engines, Transmission & More... 1 05-13-2002 09:00 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.