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01-29-2008, 10:15 AM
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#1
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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I ran a scan and Steve Brazel found the Long Term Fuel Trim levels to be high ans suggested the I check Fuel Pressure (ok), MAF (a bit dirty) and the O2 sensors (not checked yet).
But this got me to thinking about DriVer and his replacing the MAF on his coach. So, I called the local Workhorse Service Center. I asked for the cost of the MAF and he looked and could not find it. He had call Workhorse. I also asked about O2 sensors. He called me back in about 5 mins.
Workhose price for MAF (are you sitting down) is $243.70 and would take a week to get.
Here is what I found in the Workhorse cat
25168491 : SENSOR ASM - MASS AIR FLOW (WITH INTAKE AIR TEMPERATURE SENSOR)
Quantity : 1
Service Part : W8000513
OBTW - 25168491 is the Delphi part number for the 99-07 GM 85mm MAF. This is the same part number that is on my MAF that I cleaned and the same part number for the one I bought off Ebay for $26.99.
__________________
Dale
AKA - Oemy
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01-29-2008, 10:15 AM
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#2
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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I ran a scan and Steve Brazel found the Long Term Fuel Trim levels to be high ans suggested the I check Fuel Pressure (ok), MAF (a bit dirty) and the O2 sensors (not checked yet).
But this got me to thinking about DriVer and his replacing the MAF on his coach. So, I called the local Workhorse Service Center. I asked for the cost of the MAF and he looked and could not find it. He had call Workhorse. I also asked about O2 sensors. He called me back in about 5 mins.
Workhose price for MAF (are you sitting down) is $243.70 and would take a week to get.
Here is what I found in the Workhorse cat
25168491 : SENSOR ASM - MASS AIR FLOW (WITH INTAKE AIR TEMPERATURE SENSOR)
Quantity : 1
Service Part : W8000513
OBTW - 25168491 is the Delphi part number for the 99-07 GM 85mm MAF. This is the same part number that is on my MAF that I cleaned and the same part number for the one I bought off Ebay for $26.99.
__________________
Dale
AKA - Oemy
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01-29-2008, 01:08 PM
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#3
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Now isn't that a find how do you do.
Wonder if they have some chassis on E-Bay.
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01-29-2008, 01:21 PM
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#4
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Registered User
Join Date: Jun 2005
Posts: 1,566
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If you price MAF's for passenger vehicles, you will find that $243 is reasonable. My MAF for my Nissan Frontier was around $250.
If you don't use a K&N air filter and change your OEM air filters frequently, you should never have a problem with your MAF.
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01-29-2008, 02:59 PM
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#5
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Senior Member
National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2006
Location: Pasadena,CA
Posts: 221
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FrontRangeRVer, your right on. Why do some owners prefer using after market replacements for their Workhorse chassis? The OEM's are specifically designed for these chassis with superior materials.
Ed
__________________
2005 National RV, 36' Dolphin 5355, W22 - Front & Rear trac bars, IPD rear anti-sway bar, Koni FSD Shocks, UltraPower programming.
2000 Jeep Wrangler, Brake Buddy
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01-29-2008, 03:24 PM
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#6
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Senior Member
Thor Owners Club
Join Date: May 2006
Posts: 1,122
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by FrontRangeRVer:
If you price MAF's for passenger vehicles, you will find that $243 is reasonable. My MAF for my Nissan Frontier was around $250.
If you don't use a K&N air filter and change your OEM air filters frequently, you should never have a problem with your MAF. </div></BLOCKQUOTE>
http://www.knfilters.com/MAF/massair.htm
__________________
Pubtym, 20th SOS "Green Hornet" , Viet Nam 68-69,
2015 Thor A.C.E 29.3
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01-29-2008, 04:37 PM
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#7
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Pubtym: </div></BLOCKQUOTE>The problem is not so much with the filter or the oil that was installed OE but the "re-charge" that owners accomplish on their filters. Unless you are highly competent in re-charging the filter "quite a few" people have a tendency to over oil the filter.
When re-charging a filter a light spray is sufficient to restore the filter to its OE condition. The fact that the oil is red only helps with the recharge effort so you can avoid respraying the same area repeatedly.
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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01-29-2008, 05:10 PM
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#8
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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I got this off the net... food for thought.
25318411 New truck MAF (& LS6?) and '01 Z06
This P/N is used on most every V8 from '99-'05
supersedes 25168491
FrontRangeRVer and Jeepster47 - Horse feathers
The Workhorse air intake is designed to meet EPA/CARB requirements and be quite. The pre-foam filter is the very restrictive when it gets dirty. The total air intake system weighs in excess of 14 lbs. The air flow has to make 6 to 8 changes of direction BEFORE it gets to the MAF sensor.
I have cleaned my S&B 8 layer gauze filter twice and have no oil contamination on my MAF sensor. My DIY CAI is as quite as the OEM, only weighs 3 lbs and moves lots of air.
The 85 mm MAF is very common part and is available for a whole lot less than the Workhorse price. EBAY has them from $15 to $65.
__________________
Dale
AKA - Oemy
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01-29-2008, 06:37 PM
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#9
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,523
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">The pre-foam filter is the very restrictive when it gets dirty. It weighs in excess of 14 lbs. </div></BLOCKQUOTE>
DANG, Dale. That must be some HIGH DENSITY foam!
FYI, regarding MAF sensor pricing, below is a cut and paste from the NAPA website:
Mass Air Flow (MAF) Sensor - Remfd NEC
XTP48411
$89.99
Core $55.56
Mass Air Flow (MAF) Sensor - New NEC
MAF68411 $144.00
Mass Air Flow (MAF) Sensor - New
Actual OE Part DEM
AF10043
$154.00
ED
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01-29-2008, 07:52 PM
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#10
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Registered User
Join Date: Jun 2005
Posts: 1,566
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OEMTECH, I never advocated that you had to only buy an OEM MAF....Looks like Edgeray found some OEM MAF sensors much cheaper than Workhorse has, and that's good!
You shouldn't have to replace them though unless you aren't providing clean air over them, and since they don't fail very often, there really is no need to carry a spare like you would a fuel filter.
One more thing on my remarks about the K&N air filters. Here is a Recent thread about K&N Air Filters and I agree with the majority of posters on that thread (and many others) about these air filters....you are asking for trouble when you use them. K&N paid for my fouled MAF once, and that was nice of them, but you couldn't pay me to use them anymore.
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01-30-2008, 03:35 AM
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#11
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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OK.... ED I fixed that Thanks.
__________________
Dale
AKA - Oemy
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01-30-2008, 04:47 AM
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#12
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Senior Member
Thor Owners Club
Join Date: May 2006
Posts: 1,122
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by DriVer:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Pubtym: </div></BLOCKQUOTE>The problem is not so much with the filter or the oil that was installed OE but the "re-charge" that owners accomplish on their filters. Unless you are highly competent in re-charging the filter "quite a few" people have a tendency to over oil the filter.
When re-charging a filter a light spray is sufficient to restore the filter to its OE condition. The fact that the oil is red only helps with the recharge effort so you can avoid respraying the same area repeatedly. </div></BLOCKQUOTE>
Exactly...remember the old commercial on early TV..."just a little dab will do ya!!"(Brylcream).
__________________
Pubtym, 20th SOS "Green Hornet" , Viet Nam 68-69,
2015 Thor A.C.E 29.3
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01-30-2008, 03:44 PM
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#13
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Member
Join Date: Aug 2007
Posts: 78
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Thanks for the input on MAF sensors and K&N filters. My WH service guy says that the oil from the K&N will adversly effect the MAF sensor. I think I will stay with the stock filter.
__________________
2007 Itasca Suncruiser 38T
Workhorse W24
2008 Ford Edge toad
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01-30-2008, 04:06 PM
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#14
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Pubtym:
Exactly...remember the old commercial on early TV..."just a little dab will do ya!!"(Brylcream). </div></BLOCKQUOTE>That's nothing - I remember Burma Shave billboards.
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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