K&N Filter Tripping Engine Light
07-09-2009, 12:34 PM
#16
Still plays with cars.
Lifetime Rennlist
Member
Why not buy a new K and N filter. As they come from the factory they are not over-oiled and usually cause no problems. It's usually when the owner/mechanic cleans and (over) oils the filter that things get ugly.
07-09-2009, 12:48 PM
#17
Instructor
Thread Starter
Join Date: Jun 2009
Location: Philadelphia SW Suburbs
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
The PPI mechanic told me the fault was a dirty MAF sensor. He then said it is mostly likely due to the oil in the K&N Filter and to try a paper filter to see if it clears the fault, before going to the expense of new MAF sensor.
Since this seems to be emissions related, it seems to be a quick failure for the Inspection lane in Delaware.
The mechanic told me not to try to clean the MAF, as it is like a filament in a light bulb and breaks easily. Not sure if the CRC cleaner, that some one posted a link for, would work or not. He also said that when you turn off the car, the computer heats up the filament to 1000 degrees (or something like that) to burn off dirt, etc.
I figured I would follow the mechanic's advice and try a paper filter. No one has been able to recommend a paper filter for the K&N kit, so I guess I will put the OEM box back on, no filter in it though, which I need to buy. My local dealer quoted $48 for the filter. Pelican is $20, w/o shipping.
Since this seems to be emissions related, it seems to be a quick failure for the Inspection lane in Delaware.
The mechanic told me not to try to clean the MAF, as it is like a filament in a light bulb and breaks easily. Not sure if the CRC cleaner, that some one posted a link for, would work or not. He also said that when you turn off the car, the computer heats up the filament to 1000 degrees (or something like that) to burn off dirt, etc.
I figured I would follow the mechanic's advice and try a paper filter. No one has been able to recommend a paper filter for the K&N kit, so I guess I will put the OEM box back on, no filter in it though, which I need to buy. My local dealer quoted $48 for the filter. Pelican is $20, w/o shipping.
07-09-2009, 01:14 PM
#18
Race Car
The PPI mechanic told me the fault was a dirty MAF sensor. He then said it is mostly likely due to the oil in the K&N Filter and to try a paper filter to see if it clears the fault, before going to the expense of new MAF sensor.
Since this seems to be emissions related, it seems to be a quick failure for the Inspection lane in Delaware.
The mechanic told me not to try to clean the MAF, as it is like a filament in a light bulb and breaks easily. Not sure if the CRC cleaner, that some one posted a link for, would work or not. He also said that when you turn off the car, the computer heats up the filament to 1000 degrees (or something like that) to burn off dirt, etc.
I figured I would follow the mechanic's advice and try a paper filter. No one has been able to recommend a paper filter for the K&N kit, so I guess I will put the OEM box back on, no filter in it though, which I need to buy. My local dealer quoted $48 for the filter. Pelican is $20, w/o shipping.
Since this seems to be emissions related, it seems to be a quick failure for the Inspection lane in Delaware.
The mechanic told me not to try to clean the MAF, as it is like a filament in a light bulb and breaks easily. Not sure if the CRC cleaner, that some one posted a link for, would work or not. He also said that when you turn off the car, the computer heats up the filament to 1000 degrees (or something like that) to burn off dirt, etc.
I figured I would follow the mechanic's advice and try a paper filter. No one has been able to recommend a paper filter for the K&N kit, so I guess I will put the OEM box back on, no filter in it though, which I need to buy. My local dealer quoted $48 for the filter. Pelican is $20, w/o shipping.
07-09-2009, 01:18 PM
#19
Instructor
Thread Starter
Join Date: Jun 2009
Location: Philadelphia SW Suburbs
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
I guess I figured if I left the oil'd air filter on, it would simply occur again (like on the way to the inspection lane).
I will try soaking the sensor too.
I will try soaking the sensor too.
07-09-2009, 02:48 PM
#20
Drifting
Join Date: Sep 2008
Location: Cary NC
Posts: 3,049
Likes: 0
Received 0 Likes
on
0 Posts
You’ll need a security Torx 20 to take out the sensor, but I guess you could spray the MAF cleaner right through the housing if you don’t have one. You should be able to pick up a can at your local a/p store; ~$6 a can.
07-09-2009, 09:12 PM
#21
Race Director
No need to soak sensor. If problem from air filter oil cleaning it with ...
Get rid of non-stock filter. Stock filter damn good and since dry type no need to worry about oiling filter element *just right*.
Engine air filter most critical of all fiters. You can run engine sans oil filter for a long while with just oil changes but you can't run engine sans air filter long before dirt it inhales affects engine's condition.
Stock filter element relatively cheap. Replace every so often with new one. No need to try to use aftermarket one where you have to clean/oil the darn thing just right to get it to perform at some level that on a good day might be less than stock filter's performance.
Have 222K miles on my 02 Boxster and car on original engine and every mile engine has moved car has been with stock filter installed and filtering air.
Sincerely,
Macster.
07-10-2009, 10:29 AM
#23
i would dump the k&n filter. I burned out 3 MAF sensors, 2 in my es300 and one in the 4runner. Now, Toyotas may be more sensitive than other cars but i never recommend the k&n.
I use the purolator pure one air filters in all teh cars and they work just fine.
I use the purolator pure one air filters in all teh cars and they work just fine.
08-05-2009, 11:57 PM
#25
Racer
Join Date: Apr 2004
Location: Eden, UT
Posts: 398
Likes: 0
Received 0 Likes
on
0 Posts
08-06-2009, 12:24 AM
#26
08-06-2009, 10:17 AM
#27
Newbies Hospitality Director
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Join Date: Apr 2005
Location: Winston-Salem, NC
Posts: 18,085
Likes: 0
Received 32 Likes
on
32 Posts
I have been on Rennlist for a little over 4 years and I have seen NUMEROUS posts about MAF sensor problems on cars with the K&N filter installed. I am amazed that any Rennlister still has a K&N filter installed on their car! <shakes head>
If you want better sound and the same HP gain that the K&N filter gets, simply clip some baseball cards on your rear wheels! At least that HP "gain" is safe!
Todds911, my comments were not intended as a jab at you. I know you are new to Rennlist and maybe the K&N filter was already on the car when you bought it.
If you want better sound and the same HP gain that the K&N filter gets, simply clip some baseball cards on your rear wheels! At least that HP "gain" is safe!
Todds911, my comments were not intended as a jab at you. I know you are new to Rennlist and maybe the K&N filter was already on the car when you bought it.
08-06-2009, 10:36 AM
#28
Parts Specialist
Rennlist Member
Rennlist Member
08-06-2009, 10:53 AM
#29
Newbies Hospitality Director
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Join Date: Apr 2005
Location: Winston-Salem, NC
Posts: 18,085
Likes: 0
Received 32 Likes
on
32 Posts
Hey, the Numerological Rules state that I must be kind today.
Today is an even numbered Thursday (6th) in an even numbered month (8th) in an odd numbered year ('09). If you add up those numbers you get 23. Then you subtract the current week number of the year, which is 32. The result is -9. So I have to follow the "be kind on minus 9" rule.
I don't make the rules, I just follow them!
Today is an even numbered Thursday (6th) in an even numbered month (8th) in an odd numbered year ('09). If you add up those numbers you get 23. Then you subtract the current week number of the year, which is 32. The result is -9. So I have to follow the "be kind on minus 9" rule.
I don't make the rules, I just follow them!