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 > MOTORHOME FORUMS > Class C 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 06-24-2021, 04:07 PM   #1
Senior Member
 
Join Date: Dec 2016
Location: Middle Tennessee
Posts: 149
Run without catalytic converter?

So, I went to exercise my RV Sunday. It sounded like a dragster!. Shut it down and crawled underneath and found a 3 ft section of exhaust missing.

Some time in the last few weeks my C C was stolen. Haven't driven it for a month or so.'

Neighbor has a similar RV. His was probably stolen at the same time.

Question. Is going to cause problems to drive it 5 miles to the muffler shop or should I have it towed?
__________________
2006 31' Holiday Rambler Atlantis SE Ford E450 Gas
Towing a 2006 Toyota Camry/Master Tow dolly
RobReab 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 06-24-2021, 04:27 PM   #2
Senior Member
 
saddlesore's Avatar


 
Foretravel Owners Club
Join Date: Apr 2016
Location: Home is Where WE PARK IT...
Posts: 4,911
Quote:
Originally Posted by RobReab View Post
So, I went to exercise my RV Sunday. It sounded like a dragster!. Shut it down and crawled underneath and found a 3 ft section of exhaust missing.

Some time in the last few weeks my C C was stolen. Haven't driven it for a month or so.'

Neighbor has a similar RV. His was probably stolen at the same time.

Question. Is going to cause problems to drive it 5 miles to the muffler shop or should I have it towed?
Measure the diameter of your exhaust pipe , then Hit a parts house and get a exhaust "turn down tip", bolt/clamp it on and head for the shop..[Let the exhaust shop know ahead of time what you have so they can order a Cat if they don''t have one in stock]
NOTE! the reason for the turndown tip is to direct the exhaust downward away from anything that could be harmed by heat or sparks...
__________________
Retired truckdriver, Full Timing in a Foretravel.
Escapees of Box Elder, South Dakota
....Whether our shack is moving or parked.. We are still home.
saddlesore is online now   Reply With Quote
Old 06-24-2021, 07:20 PM   #3
Senior Member
 
Join Date: Jan 2018
Posts: 105
Drive it to the shop. CC is for emissions and won’t hurt. It is louder but that’s all. Not sure exactly what sparks will be flying or where they might be coming from, maybe if your burning Nitro you’d get a flame.
__________________
Coachmen Freedom Express 21QB
Farmboy666 is offline   Reply With Quote
Old 06-24-2021, 08:12 PM   #4
Senior Member
 
Winnebago Owners Club
Join Date: Aug 2019
Location: Meshoppen, PA
Posts: 1,011
You can run without, if you need a shop can put a temp pipe in place..

local emmision laws require one usually so, order one or an aftermarket hi flow cat and have it put on..

Mine was clogged and I got lucky as my GVWR and year of RV does not require the cat.. So I new 3" hi flow exhaust was added.. Runs better IMO, fuel MPG maybe .5 more,,

Good luck
sibe is offline   Reply With Quote
Old 06-25-2021, 08:29 AM   #5
Senior Member
 
saddlesore's Avatar


 
Foretravel Owners Club
Join Date: Apr 2016
Location: Home is Where WE PARK IT...
Posts: 4,911
Quote:
Originally Posted by Farmboy666 View Post
Drive it to the shop. CC is for emissions and won’t hurt. It is louder but that’s all. Not sure exactly what sparks will be flying or where they might be coming from, maybe if your burning Nitro you’d get a flame.
With these chassis and everything the RV mfg tacks on, never know which way the exhaust will be pointed at, but yes a temporary connecting pipe to replace the "Cat" will work..may confuse the engine electronics but what the hey..
[I have seen one that the pipe to the cat connection was aimed up toward the floorboards]
__________________
Retired truckdriver, Full Timing in a Foretravel.
Escapees of Box Elder, South Dakota
....Whether our shack is moving or parked.. We are still home.
saddlesore is online now   Reply With Quote
Old 06-26-2021, 05:46 AM   #6
Senior Member
 
Fiesta48's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Nov 2010
Location: Texas
Posts: 3,580
Paint the cat with hi temp spray paint so thieves may not steal.
__________________
Full Timers.
2015 Fleetwood Discovery 40E on a Freightliner XCS chassis with a Cummins ISL9 pulling 1 and/or 2 motorcycles, '07 Honda Accord OR a 17' Runabout Boat.
Fiesta48 is offline   Reply With Quote
Old 06-26-2021, 03:39 PM   #7
Senior Member


 
Join Date: Feb 2020
Location: NY State
Posts: 1,149
If the pre-cat O2 sensor is still attached upstream of the cat, it should be OK to drive it. The advice you have gotten about a downturned exhaust tip is also good. The Check Engine light will be on no matter what, because the post-cat sensor (if present) won't be seeing what it ought to see.

If the pre-cat O2 sensor is gone with the cat, the system will not enter closed loop mode. It might just work in "limp home" mode, which can be nearly unusable. (Some manufacturers should call it "crawl home" mode.)
__________________
John
1976 Southwind 28', '96 Winnie 34WK,
2006 Tiffin Allegro Bus 40QDP
n2zon is offline   Reply With Quote
Old 06-27-2021, 12:08 AM   #8
Senior Member
 
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 2,202
Can be $1,000+, easy temporary w/ 18" tailpipe extension and 18" FLEX Pipe and clamps/ adapters
__________________
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
THenne1713 is offline   Reply With Quote
Old 06-29-2021, 03:44 PM   #9
Junior Member
 
Join Date: May 2016
Posts: 6
Had mine stolen while at repair shop. Total cost to replace was ~$1700, cat was right around $1000, O2 sensor was $60, labor, gaskets, blah blah blah...

Here's a video of me giving it the beans. Was hilariously loud. I drove it 65 miles to the permanent site while the part came in (6 weeks) and then 65 miles back to the shop for repair. Idling once warmed up it just sounded nice and throaty. Any blip of the throttle and it got rowdy. Driving it post-repair it's like a luxury cruise.

Thankfully nothing really was near the exhaust output, so I just drove it. Wasn't worth dealing with towing and storage for weeks.

Jchaase is offline   Reply With Quote
Old 06-29-2021, 03:50 PM   #10
Senior Member
 
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 4,244
Quote:
Originally Posted by saddlesore View Post
Measure the diameter of your exhaust pipe , then Hit a parts house and get a exhaust "turn down tip", bolt/clamp it on and head for the shop..[Let the exhaust shop know ahead of time what you have so they can order a Cat if they don''t have one in stock]
NOTE! the reason for the turndown tip is to direct the exhaust downward away from anything that could be harmed by heat or sparks...
Good advice. Spending a few dollars could save thousands.
__________________
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
LETMGROW is offline   Reply With Quote
Old 06-29-2021, 10:01 PM   #11
Member
 
Join Date: May 2021
Posts: 36
Quote:
Originally Posted by Jchaase View Post
Had mine stolen while at repair shop. Total cost to replace was ~$1700, cat was right around $1000, O2 sensor was $60, labor, gaskets, blah blah blah...

Here's a video of me giving it the beans. Was hilariously loud. I drove it 65 miles to the permanent site while the part came in (6 weeks) and then 65 miles back to the shop for repair. Idling once warmed up it just sounded nice and throaty. Any blip of the throttle and it got rowdy. Driving it post-repair it's like a luxury cruise.

Thankfully nothing really was near the exhaust output, so I just drove it. Wasn't worth dealing with towing and storage for weeks.

That’s some race car sounding noise.
SergioP is offline   Reply With Quote
Old 06-30-2021, 06:05 PM   #12
Senior Member
 
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 2,202
Easiest temporary is 3"-dia.x 18" tailpipe entension w/ 18" flex pipe, a couple of connectors and 3-5 U-bolt exhaust clamps? $50-$75?
__________________
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
THenne1713 is offline   Reply With Quote
Old 06-30-2021, 06:32 PM   #13
Dom
Senior Member
 
Join Date: Apr 2018
Posts: 643
There are youtube vids on running without your CC. Mine clogged up and I just put a straight piece of pipe in it, had muffler shop weld in fitting of the 02 downstream sensor, can't remember but I think you just need to space out sensor a bit. I have no codes
__________________
I came into this world with nothing, and I still have most of it left
Dom is offline   Reply With Quote
Old 06-30-2021, 06:34 PM   #14
Dom
Senior Member
 
Join Date: Apr 2018
Posts: 643
__________________
I came into this world with nothing, and I still have most of it left
Dom is offline   Reply With Quote
Reply

Tags
cat, converter



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
Banks causing damage to catalytic converter DKK47 Workhorse and Chevrolet Chassis Motorhome Forum 15 01-11-2016 03:11 PM
Where to get a catalytic converter hookonrv Ford Motorhome Chassis Forum 3 08-19-2007 04:44 AM
Catalytic Converter is here supercub Workhorse and Chevrolet Chassis Motorhome Forum 2 04-29-2006 05:52 PM
Catalytic Converter Recall?? supercub Workhorse and Chevrolet Chassis Motorhome Forum 2 04-26-2006 06:20 PM
Catalytic Converter Recall JudyandJim Workhorse and Chevrolet Chassis Motorhome Forum 4 03-14-2006 06:06 PM


All times are GMT -6. The time now is 12:07 PM.


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