Oxygen / Mass airflow sensors? K&N stuff

the1jferg · **Posted:** Fri Jun 02, 2006 3:54 pm

Any of you folks that had those problems running a K&N :?:

I'm wondering if its really got anything to do with the OILED filter since there are Chrysler TSB's on the issue?????

I've finished my testing...My oil stays WAY cleaner at intervals with a purolator paper over the K&N drop in. It ain't worth the extra mpg's to me.
Maybe I'll drop it in for long trips.

JJsTJ · **Posted:** Fri Jun 02, 2006 4:12 pm

I am done using K&N filters. They can barely be called Filters w/ as much crap as they allow into the engine. I and others have requested the new Amsoil Absolute Efficiency air filter to be made for the the KJ and also a cone style AE to replace the K&N on the FIPK. Hopefully they will come out soon as I gotta get rid of the filter on my FIPK. I had to clean out an oil/dirt residue from the inside of the air tube when I first got our new KJ and it had only been on the vehicle for about 4600 miles. I also saw the same type of residue on my other KJ w/ drop in K&N. For dirty environments it just isn't worth the Small airflow gains. I really can't tell much of a difference in performance or mileage between my factory intake/wix air filter/Flowmaster exh. and our other KJ w/ FIPK/K&N filter/Borla exhaust. They both run pretty much the same.

Here is some reading material on the Amsoil line of performace FILTERS....They actually Filter the air & show an airflow improvement! AMSOIL ABSOLUTE EFFICIENCY AIR FILTERS

BTW, Not available YET for the KJ But you can find them for many other applications, Maybe for your other vehicles?

Guyute1210 · **Posted:** Fri Jun 02, 2006 4:23 pm

I have no problems with dust or oil being in my intake tube on my KJ with the K&N drop-in filter. Maybe it's just the extreme dusty conditions you are in JJ? I've had my drop-in in for almost a year, and i've been checking the air tube pretty regularly and haven't found any dust, but then again, I live in a relatively dust free area of NW PA.

JJsTJ · **Posted:** Fri Jun 02, 2006 4:36 pm

All we have out here are dry, dusty conditions. Regardless, the K&N filter has been proven time and time again to Not filter very well. Filtering is an Air filters 1st job, not increasing airflow. I imagine where others live may make a difference in what they see in their intakes. I know many race cars that use K&N filters and have no problems but they are also running in cleaner conditions and changing oil way more often than a street driven or off roaded vehicle. I am sure those vehicles also see a performance advantage over a more restrictive filter that is made to filter better. I will keep using Wix air filters on myvehicles until I can get the Amsoil brand for them.

As for the sensor issue, Yes, I have read articles stating you shouldn't use oiled air filters in applications where the MAF might be fouled by the oil.
IIRC, there is a write up by Ford about this. (I will see if I can track it down, could have been another car co.)

the1jferg · **Posted:** Fri Jun 02, 2006 4:41 pm

I'm gonna keep mine as a backup.

Jeepjeepster · **Posted:** Fri Jun 02, 2006 5:59 pm

Mine does fine. We have one in all 3 of our jeeps and they are all doing great. One has been in our Grand cherokee for over 50k and now the jeep has 157k with no problems. Burns 0 oil and I have never seen any fine dust in the intake. Ill always use K&N filters, its all about how you oil it.

the1jferg · **Posted:** Fri Jun 02, 2006 6:19 pm

"its all about how you oil it."

:lol:

It also about dust

I'm not speaking for everyone, I'm with JJ. I'm sure it does fine in certain areas and conditions.

japracer4 · **Posted:** Fri Jun 02, 2006 9:29 pm

i agree with ferg. i think it depends on where you live. i've had mi fipk for almost 30k miles and not one problem. it does depend on how you oil it. i've been running their products for atleast 8 years and will continue to do so. good luck to those living in the dust bowls.

the1jferg · **Posted:** Fri Jun 02, 2006 10:44 pm

I have seen many post with sensor problems that I felt were way premature and wanted to find out how many were runnning K&N? Chrysler had aTSB on the subject before.

I've never had a sensor fail before 100K myself.

So, how does you earl it??? Share the trick. I've been spraying mine with PAM :lol:

JJsTJ · **Posted:** Fri Jun 02, 2006 11:18 pm

Regardless of how you oil it, It still lets too much crap through. If you are not wheeling in dusty conditions you are lucky and may not have a problem. But if you Are in the desert like me and pretty much Every trail you go on is dusty constantly than your engine is sucking in way too much dirt. Those driving in dirty city conditions are probably also going to be ingesting way more garbage than your engine should. I once swore by K&N and used them on many vehicles over the years. I refused to believe my eyes on one vehicle and just kept on using it, that was in New Jersey in not so dusty conditions as it rains there a lot. Then here in Cali I did the same on another street driven vehicle, just ignoring it. Since I started wheeling a Jeep here I can no longer just look the other way and ignore what I am seeing.
BTW, No dirt in my intake since switching to a Wix air filter And I noticed the throttle body is clean now too. I switched about 5k miles ago and cleaned the throttle body, still clean. Noticed the same build up of crap on the throttle body of our newer KJ w/ around 5k miles on it running the FIPK.

tommudd · **Posted:** Fri Jun 02, 2006 11:26 pm

I am running a Rustys air tube and K&N filter with home grown air box, had it on for about 45000 miles now just checked it tonight and NO OIL in the air tube at all. It is one of those things that some like, some do not. I noticed a difference myself. I have ran K&Ns on 5 different vehicles (1 GMC , 2 Fords, 2 Jeeps , now all of them I put well over 175,000 miles and no problems. Guess I need more proof. Maybe its how much oil you put on them to begin with??

the1jferg · **Posted:** Sat Jun 03, 2006 7:51 am

I'm Still waiting for folks who had sensor problems to chime in.

I'm not debating, just trying to get some info

I know, (for me), my oil is cleaner at change with paper, I never had much build up in the TB or air tube either, but there is still residue in there (mine).

My rig don't display codes like you guys. Its the mighty 02 model...It works till it don't.

JJsTJ · **Posted:** Sat Jun 03, 2006 9:58 am

Just for S's&G's, here are the pics it took a while back. K&N cleaned and re-oiled w/ K&N cleaner and oil aprox. every 5-6k miles or as needed based on visual inspection. (lots of dusty wheeling on this KJ)
There were about 31,000 miles on the vehicle and filter when these pics were taken. Note, Inside of air tubing had been wiped out on a couple of occasions but throttle body and air box at throttle body were not. I had also always checked the tightness of the clamps though. I didn't trust them as they were loose from the factory when I 1st got the Jeep.
On to the pics.....

And another note, you can ask anyone that has seen my engine compartment, it is one of the cleanest they have seen. I clean under my hood more than I clean the outside of my Jeep. I am also constantly checking fluid levels, filters, tightness of fittings and hardware under there, crazy? maybe...... I am just funny that way.

KY Liberty · **Joined:** Sat Jul 09, 2005 1:46 pm **Posts:** 1195

The inside of the tube of my K&N FIPK is completely clean with 45k miles on it. 25k miles have been with the ram-air hood dumping a huge amount of air into it. I have to clean, and re-oil mine every 1500 miles because the top is black. It is actually much cleaner inside than the stock intake was. I blame that on the people that changed my oil. The didn't close one of the latches on the air box after they checked the filter. I noticed when I was installing the FIPK. I live and stay on road in KY though, and there isn't much of a dust problem, just pollen. The pollen is too big to go through the filter. If you live where there is a lot of fine dust, I would think you should use one of the off-road bags with it. Or else stay with the stock intake which isn't bad at all, and has a higher intake to keep out water if you off-road, and take in cooler air from between the hood and grill.

Littlehorn · **Posted:** Thu Jun 08, 2006 2:19 pm

I feel a difference between the K&N drop-in and the OEM Paper filter. I feel the engine runs rough with the K&N (like there is too much head pressure?) and then that the paper one really doesn't let enough air through. I run mine a little fast.

So, might the engine need a slight tuning adjustment for the K&N drop in?

Chris

Currently 8,000 miles on my KJ

Oxygen / Mass airflow sensors? K&N stuff

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