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R33 Afm

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Stephen Thorpe Proficient

Stephen Thorpe

Posted
Posted
Is this the R33 AFM? (Circled red)

http://i300.photobucket.com/albums/nn37/no...ous_azn/AFM.jpg

If so, how do I open it and clean it? I have CRC MAF.

That is the Airflow meter, not sure what you mean a CRC AFM, but this one looks standard.

In my opinion you can not open the AFM box itself, so do not try... There are some people that can repair if there is a problem but it is filled with hard resin and needs to be looked at by a professional.

I believe it can be re-built but not by you if you don't know how.

They either work or they don't, sometimes they will cause a rough idle and hesitation but they will normally either stop the car or not.

As for cleaning the AFM, only do this when the engine is cold, (at least an hour after turning off) with the Ignition Key off.

Pull the airbox cover off like you have.

Remove the following;

2 bolts holding the lower half of box at front of car

1 bolt on the aft outside

1 on the aft inside.

Hose Clamp that holds Hose to the AFM

Squeeze Tab on Electrical Plug, Push in and then pull terminal up to disconnect AFM from Car Loom.

Then lift the box gently off it's mounts and remove it from Car.

Turn box over and spray Electrical Contact Cleaner down the AFM (probe hanging in the inlet tube) and into the gauze that opens into the Airbox. Use the spray in the reverse direction of Airflow and do not touch the Probe, just use the spray and make sure you get a non residue drying type of cleaner.

Spray both sides of Electrical connection, the 3 pins need to look really clean.

Let it dry for a minute, then re-assemble in reverse... making sure you hear a click on the Electrical re-connection.

Should run a bit smoother now, especially if you have an oiled Air Filter element installed in Airbox.

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eeiko321 Experienced

eeiko321

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Posted

yep thats the air flow meter alright........................

have a look.......

not being able to see your car........

i feel that there is more to it than just an air flow meter......

alot of people having the same symptoms as yours, end up cleaning with AFM withought any improvement....

but it doesnt hurt to try

let us know how you go

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