6.7 Engine Air Filter Confusion

[56ram2500]

Well in my 22 I have only used the Fleetguard AF 27684 air filter without any problems, I have found that the Fleetguard is cheaper than OEM Mopar and I don't have to worry if they made some stupid changes to it that in time will need another revision to drive everyone crazy...

 

[OLEJOE]

Well in my 22 I have only used the Fleetguard AF 27684 air filter without any problems, I have found that the Fleetguard is cheaper than OEM Mopar and I don't have to worry if they made some stupid changes to it that in time will need another revision to drive everyone crazy...

If I’m not mistaken, they (FleetGuard) did change the AF27684 filter at one time but went back to the original design after some of us complained to NashNative a representative for FleetGuard. I think it was mostly supply chain issues but for whatever reason(s) they went back to the original. I have been using the FleetGuard filter ever since the first change and will attempt to do so from now on. I have 2 new Mopar AB filters on the shelf but have been biased towards the FleetGuard after someone had issues with the Mopar filter.

 

[WXman]

I just skimmed this thread. So y'all are saying the filter media with glue strips doesn't play nice with the MAF sensor on the truck? Really? Why would that be?

 

[OLEJOE]

I just skimmed this thread. So y'all are saying the filter media with glue strips doesn't play nice with the MAF sensor on the truck? Really? Why would that be?

That is the $20,000 question. Nobody can figure it out.

 

[Units]

It’s a conundrum for sure. The AF 27684 is what is in mine and it’s working. That’s the one I’ll use as long as I can get them.

I bought both, the regular Fleetguard I’ve been running and the updated mopar. I should have them both Thursday.
Edit: I’m gonna try em both, although the new filter I just swapped in was my usual Fleetguard, I’m gonna try another one. Hopefully I get some relief with one of those. I will update.

 

[flan]

Very interesting. What he says makes sense and he sure says it like he is sure it is correct. But I have not had any issues at all so far with the "oiled" filter without the glue strips. I wonder if the "oiled" filter WITH the glue strips was just too much, The glue strips did not allow flexibility in the filter so air flow was reduced somewhat. That combined with the "oil" caused a lot of issues maybe. But the "oiled" filter WITHOUT the glue strips perhaps allowed enough air flow so that the oil in the filter did not cause an issue. This is all speculation on my part of course but it is weird how if the oil was the problem, then why have most been able to run the oiled filters without the strips and not have any issues? Did the glue strips on the oiled filter caused the air to draw through more of the filter material, pulling out some oil that then coated the sensors? But once the glue strips were removed that allowed better air flow and less oil to be pulled out of the filter. Who knows!!??

Beats me, I never had an issue with the wrong “aa” gas truck filter back when that was approved back when nothing else was available during covid.

 

[flan]

I just skimmed this thread. So y'all are saying the filter media with glue strips doesn't play nice with the MAF sensor on the truck? Really? Why would that be?

It does not make sense that it would. There is the same amount of filter media, the lack of the pleats ability to move around does not change that.

 

[OLEJOE]

It does not make sense that it would. There is the same amount of filter media, the lack of the pleats ability to move around does not change that.

That’s what is so crazy about it. Some trucks don’t care what filter is used and some go crazy with even the smallest amount of restriction. Or maybe it’s not the filter itself but the housing or one of the many sensors acting up and intermittently giving a bad value to the ECM. A lot of these sensors are connected to each other and if one shows a bad value, it may or may not show a code for something completely different than what the bad sensor is supposed to monitor.

 

[Great White North Eh]

That’s what is so crazy about it. Some trucks don’t care what filter is used and some go crazy with even the smallest amount of restriction. Or maybe it’s not the filter itself but the housing or one of the many sensors acting up and intermittently giving a bad value to the ECM. A lot of these sensors are connected to each other and if one shows a bad value, it may or may not show a code for something completely different than what the bad sensor is supposed to monitor.

Ya dunno on my 19 I have always used Baldwin. Nary a problem. The more I read the less I ever want a new truck again.

 

[WXman]

It does not make sense that it would. There is the same amount of filter media, the lack of the pleats ability to move around does not change that.

Yeah that's what I'm thinking. The filter in my truck right now was changed at a GM dealership while they had it on the lot for sale. Who knows what brand it is! But truck seems fine.

 

[Units]

Will be using @OLEJOE ’s idea, I’ve got the Fleetguard filter I just bought, I ordered another Fleetguard and one of the new non oiled mopar filters, I’m gonna run them all and see if there is a difference in MAF readings. My saga of course has not been rectified, dealer was dumb and tried to sell me $850 dollars worth unnecessary repairs, stuff I had already checked. As for the TSB for frequent regens, “there is certain parameters it has to meet” blah blah blah. Will have a new exhaust sooner than later.

 

[OLEJOE]

Will be using @OLEJOE ’s idea, I’ve got the Fleetguard filter I just bought, I ordered another Fleetguard and one of the new non oiled mopar filters, I’m gonna run them all and see if there is a difference in MAF readings. My saga of course has not been rectified, dealer was dumb and tried to sell me $850 dollars worth unnecessary repairs, stuff I had already checked. As for the TSB for frequent regens, “there is certain parameters it has to meet” blah blah blah. Will have a new exhaust sooner than later.

Keep me posted on your progress. My truck is doing great right now but I have had some times that the DPF percentage on the SG would jump up while on the highway and then start coming back down. These erratic events are what makes diagnosing the issue make me want to pull my hair out. Thankfully all of my regens are occurring with nothing showing on the EVIC gauge at 24-26 hours. Even though my truck has been able to maintain the timed regens I know it’s just a matter of time before it clicks the other way and I’ll be going down the rabbit hole.

 

[Ostracize]

Keep me posted on your progress. My truck is doing great right now but I have had some times that the DPF percentage on the SG would jump up while on the highway and then start coming back down. These erratic events are what makes diagnosing the issue make me want to pull my hair out. Thankfully all of my regens are occurring with nothing showing on the EVIC gauge at 24-26 hours. Even though my truck has been able to maintain the timed regens I know it’s just a matter of time before it clicks the other way and I’ll be going down the rabbit hole.

My 21 does the same thing. I have noticed that if I have more than a week of putt around town between highway speeds the next time it is on the highway the soot load jumps up 1 or 2 EVIC levels.

If I stay above ~65mph for more than ~20 mins it will passive and drop 1 level (and another 20-30 for the 2nd drop if it went up 2) to get back to "0" on the EVIC.

This behavior is not a one-off and has been consistent for the last 60K.

I honestly think it has a very hard time measuring soot load with city driving + short drive cycling + erratic EGTs... etc. Which causes a false or delayed "0" soot display.

 

[OLEJOE]

My 21 does the same thing. I have noticed that if I have more than a week of putt around town between highway speeds the next time it is on the highway the soot load jumps up 1 or 2 EVIC levels.

If I stay above ~65mph for more than ~20 mins it will passive and drop 1 level (and another 20-30 for the 2nd drop if it went up 2) to get back to "0" on the EVIC.

This behavior is not a one-off and has been consistent for the last 60K.

I honestly think it has a very hard time measuring soot load with city driving + short drive cycling + erratic EGTs... etc. Which causes a false or delayed "0" soot display.

I think the EVIC gauge is driven entirely by differential pressure, so when easing around in town it’s not getting enough turbo boost pressure to increase the dp between the inlet and outlet of the DPF. That’s why it jumps up when you get back out on the highway and then comes back down after passively regening. I’m talking about mine jumping up on the highway and then passively regening back down which keeps me with anxiety because I don’t know when it’s going to jump and be the new norm. When that happens or if it does happen, it will get a lighter more efficient exhaust system.

 

[Trash Panda]

I think the EVIC gauge is driven entirely by differential pressure, so when easing around in town it’s not getting enough turbo boost pressure to increase the dp between the inlet and outlet of the DPF. That’s why it jumps up when you get back out on the highway and then comes back down after passively regening. I’m talking about mine jumping up on the highway and then passively regening back down which keeps me with anxiety because I don’t know when it’s going to jump and be the new norm. When that happens or if it does happen, it will get a lighter more efficient exhaust system.

There are days I’m convinced the EVIC is driven by the observations of a drunken gnome who lives in the DPF and sends smoke signals to the ECM to read.

 

[Units]

This is gonna be a long post.
So I bought several different air filters after having frequent regeneration issues over the last 2 weeks and popping a check engine light for frequent regenerations. I had been buying the Fleetguard air filter for several years, since the whole glue strip issue reared its head.

The filter on the left (Fleetguard) is the one I just installed and was having all the issues with, it was made in USA and no glue strips. The one in the middle is the Fleetguard air filter from my second order, made in Mexico, along with the updated dry mopar air filter on the right with the glue strips, made in Canada. All filters purchased from Geno’s. The following is the addendum letter that came with the new mopar filter from Geno’s:

The Fleetguard filter that I initially used (on the left and from USA) had no glue strips but had glue between the vertical pleats and was lightly oiled. The filter in the middle ( from Mexico) has zero glue anywhere and seemed to be heavily oiled (this one I decided not to use). The mopar(on the right and un oiled) has glue strips on the pleats and in between the vertical pleats.

Seeing the addendum that came with the mopar filter, i decided to swap that one in for the Fleetguard I had been using, being full aware of the issues that had been had with the filters with glue strips. I cleaned the MAF and the MAP sensors in the lid of the air intake and stuck in the new filter and went for a test run, I did my commute that I usually do for work but did the whole round trip, about 50 miles, mostly interstate. And wouldn’t you know it, passive regen worked just as normal and I did not get the soot loading like before. Got back home and stuck in the Fleetguard filter from before and did the same run and had soot loading, not as dramatic as before but it was definitely soot loading. I can only figure it was the oil in the filter getting on the sensors, why it just started to happen now with the same filter I had been using for years is beyond me. Maybe it’s an outlier, who knows. I’ll check back when I get more seat time with the mopar filter. I do have my new exhaust system on the way because I’m over all this air filter confusion and constant worry about the Dpf.

 

[Trash Panda]

This is gonna be a long post.
So I bought several different air filters after having frequent regeneration issues over the last 2 weeks and popping a check engine light for frequent regenerations. I had been buying the Fleetguard air filter for several years, since the whole glue strip issue reared its head.
View attachment 94415
The filter on the left (Fleetguard) is the one I just installed and was having all the issues with, it was made in USA and no glue strips. The one in the middle is the Fleetguard air filter from my second order, made in Mexico, along with the updated dry mopar air filter on the right with the glue strips, made in Canada. All filters purchased from Geno’s. The following is the addendum letter that came with the new mopar filter from Geno’s:
View attachment 94416
The Fleetguard filter that I initially used (on the left and from USA) had no glue strips but had glue between the vertical pleats and was lightly oiled. The filter in the middle ( from Mexico) has zero glue anywhere and seemed to be heavily oiled (this one I decided not to use). The mopar(on the right and un oiled) has glue strips on the pleats and in between the vertical pleats.
View attachment 94417
Seeing the addendum that came with the mopar filter, i decided to swap that one in for the Fleetguard I had been using, being full aware of the issues that had been had with the filters with glue strips. I cleaned the MAF and the MAP sensors in the lid of the air intake and stuck in the new filter and went for a test run, I did my commute that I usually do for work but did the whole round trip, about 50 miles, mostly interstate. And wouldn’t you know it, passive regen worked just as normal and I did not get the soot loading like before. Got back home and stuck in the Fleetguard filter from before and did the same run and had soot loading, not as dramatic as before but it was definitely soot loading. I can only figure it was the oil in the filter getting on the sensors, why it just started to happen now with the same filter I had been using for years is beyond me. Maybe it’s an outlier, who knows. I’ll check back when I get more seat time with the mopar filter. I do have my new exhaust system on the way because I’m over all this air filter confusion and constant worry about the Dpf.

Well, that’s good you seem to be experiencing a change for the better.

It’s concerning that a simple air filter can affect these trucks so drastically. Maybe I will have to try the updated mopar filter on my 22 that I’m battling as well. Or maybe I’ll just rip the bandaid off and get that small exhaust setup myself.