General Maintenance

[subieboy]

http://buildafastercar.com/

Topics include:

Brakes

Drilled Brake Rotors

Effects of Wheel Size/Weight on Performance

How to Clean Your Maf/IAT Sensor

Dynamic Camber - an Analysis of Caster and Kingpin Inclination

Camber

Sway Bar Rate Calculator

Roll Centers

etc

Happy reading, applogoies if posted before

[RS.YES]

What cleaner should I use to clean the MAF?

[albaru]

 RS.YES said:

What cleaner should I use to clean the MAF?

Try CRC Mass Air Flow Sensor Cleaner.

[Guest boostin]

 al']

[quote name='RS.YES said:

What cleaner should I use to clean the MAF?

/quote]

Try CRC Mass Air Flow Sensor Cleaner.

And then go and buy a new AFM. Subaru AFM's are self cleaning.

[albaru]

 boostin']

[quote name='RS.YES said:

What cleaner should I use to clean the MAF?

/quote]

Try CRC Mass Air Flow Sensor Cleaner.

And then go and buy a new AFM. Subaru AFM's are self cleaning.

My MAFs self-cleaned themselves to a sooty carbon black colour. The Cleaner turned them into a purty shiny metal colour ;D

[RS.YES]

Umm where would I find the MAF in a '91 RS? i'm sure its the AFM? Think I might need a new one too cars running rich even when warming up and after boostin it lightly on the motorway.

[Guest boostin]

 RS.YES said:

Umm where would I find the MAF in a '91 RS? i'm sure its the AFM? Think I might need a new one too cars running rich even when warming up and after boostin it lightly on the motorway.

Yup, MAF = AFM.

[R.D]

boostin: why do you not recommend cleaning the MAF? I googled it just before, quite a bit came up on subie owners using a special MAF cleaning spray. Self cleaning how haha? the pics showed layers of crap over the temp sensor bit?

[subieboy]

 R.D said:

boostin: why do you not recommend cleaning the MAF? I googled it just before, quite a bit came up on subie owners using a special MAF cleaning spray. Self cleaning how haha? the pics showed layers of crap over the temp sensor bit?

the newer crop (anything 98 onwards I believe) are very sensitive, they are the hotwire/self cleaning types (especially on BT/GTB BH/BE's onwards). These dont like dirt/liquids etc touching them. They are alos very sensitve to vibrations (hence why poddies killem)...

[Guest boostcut]

when you turn the key off, the wire in the afm heats up (hot wire) and burns the crap off it.

[Divine]

I opened mine up not knowing what I was doing, ripped that plastic cover off, removed the brass seal plate thing, saw there was nothing I could do on the circuit board, taped it back on, now its never run better

[aim]

 boostcut said:

when you turn the key off, the wire in the afm heats up (hot wire) and burns the crap off it.

There sure are some smart cookies in this world

[Guest boostcut]

you can pull the top off the mazda vane type afms and play with the air fuel ratios dyno power did it for me on my gtx when it was leaning out

[R.D]

 boostcut said:

when you turn the key off, the wire in the afm heats up (hot wire) and burns the crap off it.

ah interesting, so that wire bit is responsible for measuring the quantity of air coming through, correct? Which cleans itself, but what about the needle bit that measures air temperature? dirty stuff builds up on that as i saw on the pics, so should that be cleaned?

[Guest boostcut]

the wire bit? as in the mesh? no, it doesnt clean itself. the needle bit? yes. it cleans itself

[R.D]

This is the needle correct? Getting cleaned

[Guest boostin]

Yep, that's the air temp bulb. Having dirt on that doesn't matter, as the air temp doesn't change rapidly.

[RS.YES]

Is this the one just after the air box? I had a look at AFM when I changed my plugs and it looked different....

[Guest boostin]

 RS.YES said:

Is this the one just after the air box? I had a look at AFM when I changed my plugs and it looked different....

Yup, it does, cos it's an entirely different unit.

[RS.YES]

Now that I've just had a look at the engine, that picture is of that black box on the side of the throttle body, right? So that's the air temp thing which self-cleans, so the AFM doesn't need cleaning or would it be better to give it some light sprays of that cleaning agent?

[Guest boostin]

 RS.YES said:

Now that I've just had a look at the engine, that picture is of that black box on the side of the throttle body, right? So that's the air temp thing which self-cleans, so the AFM doesn't need cleaning or would it be better to give it some light sprays of that cleaning agent?

What??

The black box on the side of the throttle is the throttle position sensor.

The air temp sensor is inside the air flow meter and is not self cleaning.

The air flow meter hot wire is the thing that senses the air flow, and is self cleaning.

[RS.YES]

 boostin']

[quote name='RS.YES said:

Now that I've just had a look at the engine, that picture is of that black box on the side of the throttle body, right? So that's the air temp thing which self-cleans, so the AFM doesn't need cleaning or would it be better to give it some light sprays of that cleaning agent?

/quote]

What??

The black box on the side of the throttle is the throttle position sensor.

The air temp sensor is inside the air flow meter and is not self cleaning.

The air flow meter hot wire is the thing that senses the air flow, and is self cleaning.

Cheers boostin' i was just confused. With that info you made it alot clearer heh heh complete noob here