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01-13-2021, 01:01 PM
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#1
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Member
Thor Owners Club
Join Date: Sep 2011
Posts: 48
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2003 Workhorse W22 MAF
Where can I find out what MAF unit is correct for my unit. I keep coming up empty when I search for one.
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01-13-2021, 02:20 PM
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#2
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Senior Member
Join Date: Jun 2016
Location: On the continental divide
Posts: 168
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Try "ultrarv.com"
I just bought one for our '03 Pace Arrow 37c (496cid chevy).
Cost was 150.00 and free frt.
Mike in Colorado
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01-13-2021, 04:24 PM
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#3
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Member
Thor Owners Club
Join Date: Sep 2011
Posts: 48
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Thanks Mike. I checked there and the one that they listed was $321 which seemssteep.
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01-13-2021, 04:55 PM
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#4
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 10,315
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ricpe...Have you tried cleaning the original MAF?
Are you getting any Check Engine Lights?
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
"All the truth in the world adds up to one big lie" Bob Dylan
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01-13-2021, 09:41 PM
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#6
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US Navy Veteran
Florida Cooters Club Workhorse Chassis Owner RV Trip Wizard
Join Date: Aug 2020
Location: St. Louis metro east
Posts: 109
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Have you tried cleaning the wire?
__________________
Bob & Jill Eschbach
2009 CT Coachworks Siena 35V / W22 8.1L Vortec 340hp / Allison 1000 6spd / Ford Flex / Blue Ox Aventa / TST 507 / Even Brake / Onan 7k / RM sway bars / RM Steering Stabilizer / Rear Trac Bar / SumoSpring Maxim / Bilstein shocks / Members: FMCA, WCMC, Good Sams, RV Life
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01-14-2021, 09:53 AM
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#7
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Member
Thor Owners Club
Join Date: Sep 2011
Posts: 48
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Thanks, I have the cleaner and will be trying that. right now I'm still trying to figure out if there is a trick to disconnecting the connector. I am a bit afraid to just pull on it, and haven been able to see if there is a catch to push. Don't want to mess it up.
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01-14-2021, 10:04 AM
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#8
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe
Posts: 4,444
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Yes, there is a catch. Get a light and have a close look.
Good advice to clean it. That's the usual problem with them.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand! 
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01-14-2021, 10:22 AM
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#9
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Senior Member
Join Date: Feb 2015
Location: Grapevine, Tx
Posts: 3,155
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Quote:
Originally Posted by rlcpe
Thanks, I have the cleaner and will be trying that. right now I'm still trying to figure out if there is a trick to disconnecting the connector. I am a bit afraid to just pull on it, and haven been able to see if there is a catch to push. Don't want to mess it up.
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3:09 in this video might help.
https://youtu.be/FgMa7UEISgE
__________________
2004 Fleetwood Southwind 32VS W20
ReadyBrute Elite towing a 2017 Ford Edge Sport
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01-14-2021, 11:16 PM
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#10
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Jul 2002
Location: Camarillo, CA ---Back in the house after 7 yrs fulltiming
Posts: 1,476
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Here's the one I bought 3.5 yrs ago made by Delphi on Amazon for $86.15:
https://www.amazon.com/dp/B000CGFHBY...roduct_details
__________________
Bill & Helen & Bella (Yorkie/Chihuahua Mix)
Last of the Chieftains, 2004 39T, W22, UP tune, Banks, Koni's, Safe-T-Plus, SMI brake
2017 Lincoln MKZ Hybrid towed 4-down, 2008 Jeep Wrangler JK
![https://www.irv2.com/attachments/signaturepics/sigpic23522_1.gif]](/attachments/signaturepics/sigpic23522_1.gif)
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01-15-2021, 11:59 PM
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#11
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Senior Member
Join Date: Jul 2013
Location: Somerset, Ky
Posts: 180
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8.1 Vortec MAF Cleaning Before & After Fuel Trims/Grams Per Second Measured + Filter
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01-16-2021, 10:24 AM
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#12
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2017
Posts: 777
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Quote:
Originally Posted by Duner
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I also bought this same Delphi MAS on Amazon. This Delphi part number was recommended by Jon Brazel.
I installed it in Sept 2017 and everything has been running well ever since.
Keep your air filter clean! I use a Wix filter without the foam overlay. I used K & N filters on my carbureted engines but don't on fuel injected engines with a MAS. The oil fouls the MAS.
__________________
2003 34' Georgetown on W20 Workhorse Chassis. UltraRV power mods. Front Sumo Springs, Rear P32 Sumo Springs, UltraRV Track Bar.
1998 Jeep Toad.
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