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Old 06-05-2014, 04:21 PM   #1
Join Date: May 2011
Posts: 93
Air filter vacuum gauge problem

2007 Fleetwood Discovery w/ cat7, 34K miles. The air filter vacuum gauge indicates that the filter should be replaced. I replaced the original filter Ecolite AH1197 with a Baldwin PA3493. after resetting the gauge and starting the engine the vacuum gauge again indicates that the filter should be replaced. I inspected the vacuum gauge supply line and the waste gate and did not find any problems. The Freightliner dealer parts person states that they are not aware of any problems with the gauges Freightliner p/n 22-47727. Any suggestions out there?

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Old 06-05-2014, 06:06 PM   #2
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National RV Owners Club
Join Date: Feb 2012
Location: Spokane Valley, Wa
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That filter is a 960 CFM flow rate.
If someone installed a power chip you will see higher indications on the minder, you
also might check the inlet hose for any signs of sharp bends and or blockage as well
as the inlet opening on the outside.
As usual the filter just meets the min requirements for your engine if hooked to a good intake system.

1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
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Old 06-08-2014, 09:53 PM   #3
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Join Date: Feb 2008
Location: California
Posts: 611
If possible find someone else who has the same one and swap it out and take a drive. The filter minder could be bad.
2007 Fleetwood Excursion 40E
2007 Chev Classic CC LB D/A - Toad
2013 Jeep Sahara Unlimited - Backup Toad
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