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Topic: How to interpret air filter minder? (Read 380 times) previous topic - next topic

How to interpret air filter minder?

How do I read this gauge? What does it mean?
1998 U295 36' No slides
Towing 2018 Jeep Wrangler
Previous rigs:
  1995 26' Fleetwood Flair
  1998 34' Fleetwood Bounder
  1997 40' Bluebird BMC
  1999 24' Winnebago Minnie Class C

Re: How to interpret air filter minder?

Reply #1
When the yellow reaches the red it's time to change the air filter. I've never seen one that works great.
Chappell & Mary
36' 2004 Foretravel U270 build #6273

Re: How to interpret air filter minder?

Reply #2
And, the air filter minder is just one reason for changing the engine air filter.

Filters also age out-- 3-4 years is about all you can count on with a high degree of reliability.

If the filter element gets wet-- its life "with a high degree of reliability" is pretty much over.

The filter minder can also fail.  EASY to test.  Just remove the vacuum hose from the air filter end.  Suck on it. That should peg the air filter minder and it should hold that reading.  Push the release button on the air filter minder to reset it to zero.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: How to interpret air filter minder?

Reply #3
The filter minder can also fail.  EASY to test.  Just remove the vacuum hose from the air filter end.  Suck on it. That should peg the air filter minder and it should hold that reading.  Push the release button on the air filter minder to reset it to zero.
But if the filter minder right now says it's at let's say 50%, and I test then reset it, it goes back to zero and I lose the 50% reading? Or I suppose that would that come back up soon after I start the coach up again...
1998 U295 36' No slides
Towing 2018 Jeep Wrangler
Previous rigs:
  1995 26' Fleetwood Flair
  1998 34' Fleetwood Bounder
  1997 40' Bluebird BMC
  1999 24' Winnebago Minnie Class C

Re: How to interpret air filter minder?

Reply #4
It would come back the next time you have a load on the engine. Not at idle.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: How to interpret air filter minder?

Reply #5
It would come back the next time you have a load on the engine. Not at idle.

Yup, first time you demand maximum air flow (i.e. WOT at higher RPM) it would restore the max vacuum reading.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: How to interpret air filter minder?

Reply #6
The filter minder can also fail.  EASY to test.  Just remove the vacuum hose from the air filter end.  Suck on it. That should peg the air filter minder and it should hold that reading.  Push the release button on the air filter minder to reset it to zero.
Don't forget to check the air hose going into the filter to not be blocked several have been and the filter minder will never get a indication other than a new "unused" unoperated filter. Hose will be restricted but should still flow air going into/out of the filter housing..
Scott

 

Re: How to interpret air filter minder?

Reply #7
Your filter minder may have been replaced so know the numbers for your engine. They are not the same for our different brands. Proper numbers are in our archives.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)