|
|
09-27-2021, 12:33 PM
|
#1
|
Member
Join Date: Aug 2016
Posts: 56
|
Sluggish Engine / Acceleration
On my return trip from Alabama to Michigan, my RV became very sluggish at low speeds and idle. At traffic lights, it almost felt like it was going to stall, but didn't. I had a difficult time on entrance ramps to the expressway. It didn't perform too badly on the expressway. Any ideas where to start problem-solving? It has always run so well. This is the first engine problem I've had in the 6 years I've owned it. The engine is a Chevy Workhorse W-22 on a 2004 Newmar Mountain air gasser. Thank you.
__________________
2004 Newmar Mountain Aire
Workhorse W-22 Chassis
|
|
|
|
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!
|
09-27-2021, 01:57 PM
|
#2
|
Registered User
Newmar Owners Club Ford Super Duty Owner Freightliner Owners Club Retired Fire Service RVer's
Join Date: Jan 2019
Location: Rosemary Farm, Northern Ca
Posts: 5,444
|
sounds like it could be a boost issue - leak in the system or a dying turbo. Do you have a way to observe boost pressure while driving?
|
|
|
09-27-2021, 01:59 PM
|
#3
|
Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
|
Quote:
Originally Posted by R.Wold
sounds like it could be a boost issue - leak in the system or a dying turbo. Do you have a way to observe boost pressure while driving?
|
Gasser....... I would start with the fuel filter .
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
|
|
|
09-27-2021, 02:02 PM
|
#4
|
Senior Member
Join Date: Apr 2018
Posts: 3,441
|
Plugged cat is the only thing I can think of on a gasser that makes for a smooth loss of power. On a car I would drill a 3/8 hole in the exhaust pipe in front of the cat. Could always tell the difference in power. A big motor would take 4 holes or so. Just mig them up afterwards.
|
|
|
09-27-2021, 02:04 PM
|
#5
|
Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,140
|
Your MAF is dirty. Do you use a K&N air filter?
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
|
|
|
09-27-2021, 02:09 PM
|
#6
|
Registered User
Newmar Owners Club Ford Super Duty Owner Freightliner Owners Club Retired Fire Service RVer's
Join Date: Jan 2019
Location: Rosemary Farm, Northern Ca
Posts: 5,444
|
Quote:
Originally Posted by palehorse89
Gasser....... I would start with the fuel filter .
|
Oh - assumed diesel and didn't finish reading to the workhorse part...
|
|
|
09-27-2021, 02:49 PM
|
#7
|
Senior Member
Join Date: Jul 2008
Location: Pennsylvania
Posts: 2,773
|
Check your accelerator power plug, it it comes loose it can cause a slow acceleration.
Mine came loose on my new Horizon, they forgot to lock it.
They all have a lock
__________________
2020 Winnebago Horizon 42Q (XCL chassis)
2022 Jeep Wrangler Sahara Unlimited
99 Storm 30H, 04 Southwind 32 VS, 07 Ellipse 40FD
|
|
|
09-27-2021, 09:12 PM
|
#8
|
Senior Member
Join Date: Aug 2020
Location: Ohio
Posts: 2,353
|
Clean maf.. and if that does not work.. borrow a scanner.. many auto parts store do loan for free.. Bet you need to change both o2 sensors in front of cats.. if they have not been changed.. use air tool and expect to re chase threads.. if they have.. make sure you use antiseeze.. good luck and let us know what you did and maybe better members then me will help you.. oh if you do o2 sensors.. wear leather gloves... you will need them.. and always eye protection.. rust just flies ..
__________________
2000 southwind storm, workhorse custom chassis with 7.4l vortec
|
|
|
09-28-2021, 10:42 AM
|
#9
|
Senior Member
Join Date: Jun 2000
Location: Martinez, CA. USA
Posts: 362
|
Start with the easy stuff first.
Engine scan. Does it reveal anything?
Check your air filter. Mine got saturated with water and performed similar to what you have going on.
Clean your MAF. Easy to do while the air cleaner is out.
Fuel filter
Check plugs and wires.
Let us know what you find.
|
|
|
10-16-2021, 11:30 AM
|
#10
|
Member
Join Date: Aug 2016
Posts: 56
|
Replaced the Air Filter and cleaned MAF sensor and no change. I tried to rev the engine and at around 3000 rpms the engine sort of levels off and shuts itself down. I'm wondering if the catalytic converters could be clogged. I had mine stolen in the spring and replaced early summer.
__________________
2004 Newmar Mountain Aire
Workhorse W-22 Chassis
|
|
|
10-16-2021, 11:31 AM
|
#11
|
Member
Join Date: Aug 2016
Posts: 56
|
I'll try to post a video of what it does this afternoon.
__________________
2004 Newmar Mountain Aire
Workhorse W-22 Chassis
|
|
|
10-16-2021, 11:36 AM
|
#12
|
Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
|
Quote:
Originally Posted by mj25
Replaced the Air Filter and cleaned MAF sensor and no change. I tried to rev the engine and at around 3000 rpms the engine sort of levels off and shuts itself down. I'm wondering if the catalytic converters could be clogged. I had mine stolen in the spring and replaced early summer.
|
The engine is governed (limited) to not more than 3,000 RPMS when in "P" and "N". Unless you've got some very serious emission problems, it isn't likely that your "new" cats are already "plugged".
|
|
|
10-16-2021, 03:17 PM
|
#13
|
Senior Member
Join Date: Aug 2020
Location: Ohio
Posts: 2,353
|
If you think it's cats.. don't go drilling holes in exhaust to check.. just take out o2 sensors and see if that does it.. no drilling.. have you tested fuel pressure.. it takes all 5mins and no hand tools.. auto parts store will lend you fuel pressure gauge for free.. while there get a repair book for same eng and trans same yr as chassis for Chevy c2500.. it will give you great trouble shooting guide and engine specs.. tell you fuel pressure specs.. good luck and keep us posted.. you may have to leave hatch open to test f/p while driving under load.. easy..
__________________
2000 southwind storm, workhorse custom chassis with 7.4l vortec
|
|
|
10-16-2021, 03:25 PM
|
#14
|
Member
Join Date: Aug 2016
Posts: 56
|
Quote:
Originally Posted by edgray
The engine is governed (limited) to not more than 3,000 RPMS when in "P" and "N". Unless you've got some very serious emission problems, it isn't likely that your "new" cats are already "plugged".
|
Makes sense. But when I drive it, the engine sounds like it is struggling to get power still, almost a deep sound. Almost feels like it is shaking or bouncing, trying to get power. I may take it in and see what a professional thinks.
__________________
2004 Newmar Mountain Aire
Workhorse W-22 Chassis
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|