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[VZ] Cleaning MAF Sensor and Replacing Air Filter

wassaby

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Step 1. Take off air intake guard.

Step 2. Undo bolt connecting the MAF sensor to the Air intake to the engine. Disconect MAF wires.

DSC05856.jpg

Step 3. Undo Air box cover, 3 screws. Put a rag in the pipe coming out of the engine to stop crap getting into the engine. Replace Air filter and clean bugs out of the bottom of the air box.

DSC05847.jpg

Step 4. Clean the MAF senor and connection with CRC MAF sensor Cleaner. Do not touch the MAF senosr at all other wise you will be up for a new one. It will dry in a few minutes by itself.

DSC05849.jpg


Step 5. Put everything back together. Make sure you have a good seal between the engine air intake pipe and the MAF sensor pipe.


After doing my sv6 i notice it to run and drive a lot smoother. Will be doing it every service from now on.

Enjoy
 

shaune_m

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Great Thread mate thanks.
Will give it a go shortly. Did you notice a big improvement?
Cheers
 

QldKev

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Good article.

I recently did this to my LS1 VX as it had a slight flat spot of idle. This car has 115,000 on it with more than half the k's I have put on it. It had not been done in the time I have had it. On removing the MAF I noticed a slight film of dust on the criss cross air intake bit. I used carby cleaner and left it to dry.

Over the last 200km (since I did it) it seems to have cleared up the flat spot sensation up, I have actually been getting slightly better fuel economy (dropped from 18L to 16L around town) and it idles a bit higher. Prior to this the idle also did not seem to udle up much for cold mornings (I am in Qld) where now it does idle about 900rpm when I first start it.

I will be doing it again (if I don't go mafless prior)

Qldkev
 

Dayvo

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I tried some of that cleaner today . Mine was pretty black . Havn't taken it for a drive yet . Mine had something that looked like part of a rose petal stuck to it . That could have had something to do with the uneven idle i was having trouble with . Know idea how it got there
 

DoggFather

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You see how you have a pic on step 4, do I just spray the whole inside with CRC MAF cleaner? IE the black plastic parts
 

DoggFather

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Also the MAF would be still connected to the top half of the air box right?
 

drewwy

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Yes it would. If u want to clean out your intake tube dismantle intake tube from throttle body and maf and clean out by hand. Just remember to assemble ur maf sensor the right way around it should have an arrow on it with direction of air flow and as wassaby said DON'T touch the sensors on maf if you have maf off completely you can spray it from both sides
 

Shooter03

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Cheers mate, doing it when I get home tonight.


Posted with my iPhone 4s through tapatalk
 

exanVZ

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Sorry to bump such an old thread, just wanted to say thanks for this advice.
I've had problems with misfiring on my VZ and a mechanic has already checked the coils and a few other things. He suggested I try this (not sure why he didn't?) but this guide was extremely helpful.

I will be sure to update this post if the situation improves.

Cheers!
 
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