Oil from air filter affecting Air Flow Meter (AFM)

[silver33]

I'm looking at replacing the airbox paper filter with a Unifilter - not the pod type, just the rectangular ones that are straight replacements for the paper type.

Has anyone had a problem with the oil on the filter getting onto the Air Flow Meter and creating problems?

Most people on the forum appear to be using some form of oil based air filters - K&N, unifilter, blitz, etc...

Feedback would greatly be appreciated.

[2rismo]

You should be right if you dont over do it when you re-oil it.

if you're really concerened, re-oil the filter, drive for a while, then clean the AFM.

Adrian

[Sydneykid]

Hi Silver33, this problem is way overated, simple rules apply. Don't over oil the filter and use spray on brake cleaner to clean the afm internals when you do the engine oil change.

Hope that helps

[silver33]

Sydneykid,

To clean the internals of the AFM, do you actually mean taking the airbox out, physically removing the AFM from the car, taking off the mesh and spraying brake cleaner onto the internals, then re-assembling everything?

I've never dis-assembled the AFM before so I'm not sure how sensitive the AFM is, ie is it safe to be spraying things into the AFM and will it require re-calibration?

[sidewaymambo]

you can have the AFM off the air box, spray through the net, do not open it..

[Steve]

silver33, this is a very easy thing to do. Just loosen off the clamps front and back, spray the cleaner at the sensor, and replace the afm.

It has mesh on the front and back, which doesnt need to be removed, but alot of people do remove the mesh to improve flow - not too sure it does much thought(removing the mesh).

If you are still a bit hesitant, someone has posted a thread with detail instructions and photos. Either on performance or maintenance forum.