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Joined: May 2002
Posts: 6,007
isaac
ECelica Admin
isaac Dec 9, 9:18pm - #67215 
2001 Absolutely Red Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT

Joined: May 2002
Posts: 6,007
Los Angeles, CA
MAF Sensor - How To Clean

Cleaning the MAF Sensor
Pictures & Edits by jummywummy@hotmail.com

The Mass Air Flow sensor is crucial to the fuel systems operation. This is the sensor that the engine computer uses to measure how much air is entering the engine so that it may properly deliver the proper amount of fuel. A dirty MAF sensor hot wire may cause several problems to include: difficult start, poor acceleration, pinging, rough idling, to name a few. This whole procedure should take you less than ten minutes.

Use Q-Tips and "CRC Mass Air Flow Sensor Cleaner" . A cleaner that will not attack plastic or leave a residue on the wires. Its available for about $8 USD at your local auto parts retailer.

Pics are self explanatory

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1. Locate the MAF Sensor on the air Intake pipe just behind the Air Filter box. Remove the MAF Sensor from the air Intake pipe by removing the two Phillips screws.


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2. Disconnect the MAF Sensor wire harness by pressing the tab and pulling.


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3. Spray cleaner on to the platinum wires liberally to clean off any built on dirt residue. You may want to remove the rubber o-ring around the housing to prevent the possibility of the cleaning agent making it brittle.


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4. Inspect the platinum hot wire inside the MAF housing. You can see the air temperature thermistor on the side in this view.

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5. Replace the cleaned MAF sensor back into air Intake pipe.


6. Put it all back together and you're done.


Here is a before and after MAF cleaning dyno chart plotting torque over RPM.

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There's no magical power gain, but it's a good idea to keep your engine maintained.

Check the MAF for dirt and deposits every time you check the Air Filter, and that should help keep your engine running at top Performance.

...

CRC Mass Air Flow Sensor Cleaner is available for about $8 USD at your local auto parts retailer.
MAFCleaner.jpg
Joined: Jul 2003
Posts: 2,043
trog2233
ECelica Staff
trog2233 Dec 10, 1:20pm - #67216 

ECelica Staff
2004 GMC Canyon Z-71

Joined: Jul 2003
Posts: 2,043
Williamsport, PA
Awesome...i've had to do this for awhile...now i think i will grin
Joined: Nov 2003
Posts: 53
gtsbryan
Member
gtsbryan Dec 24, 10:17pm - #67217 

Member
2000 Toyota Celica GTS

Joined: Nov 2003
Posts: 53
san diego ca 858
you always have some valuable info GREAT WORK man.. DYNO and everything what else can you ask for!!
Joined: Jun 2003
Posts: 260
calidrifter
El Guapo
calidrifter Jan 19, 5:56am - #67218 
El Guapo
1997 Nissan 240SX

Joined: Jun 2003
Posts: 260
Chatsworth, CA
Be careful when you do this cause if you mess up you just cost yourself a $200-$300 core.

Touge Knights - Canyon Driving Team!
Joined: Feb 2004
Posts: 8
joelcelica
New Member
joelcelica Feb 20, 12:57pm - #67219 
2001 SILVER Toyota Celica GT
New Member
2001 Toyota Celica GT

Joined: Feb 2004
Posts: 8
lillinois,USA
Man Isaac I have been trying to figure out what was wrog with my car for the longest time now, thanks you just saved me some money cause I was gonna take it to the shop, who knows what they would have came up with and charged me.
Joined: Feb 2004
Posts: 255
YoshiVS
Member
YoshiVS Feb 27, 4:30pm - #67220 

Member
2000 Toyota Celica

Joined: Feb 2004
Posts: 255
WI
Awsome work!

Something I have to look out for now...

[Linked Image]
With Style, Comes Speed
Veilside Celica GTS
Joined: Jan 2004
Posts: 98
BAC
Member
BAC Jun 4, 10:06pm - #67221 

Member
2000 Toyota Celica GT

Joined: Jan 2004
Posts: 98
California
i tried to disconnect it but had a hard time taking it off...is it really supposed to be hard to diconnect it??? or is it unnessary to do so?
Joined: Nov 2003
Posts: 2,224
oas
Specialist
oas Jul 23, 5:20am - #67222 
Specialist

Joined: Nov 2003
Posts: 2,224
noob question, if i buy a new Intake do i get a new maf then since i tried to look on some pics and to me its seem like its sitting on the Intake or is it just me thats sleeeeepy
Joined: May 2002
Posts: 6,007
isaac
ECelica Admin
isaac Jul 23, 10:20am - #67223 
2001 Absolutely Red Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT

Joined: May 2002
Posts: 6,007
Los Angeles, CA
Joined: Jul 2014
Posts: 1
redalpha
New Member
redalpha Jul 19, 6:17pm - #450140 
New Member

Joined: Jul 2014
Posts: 1
usa
That was very useful information for finally solving a long term problem of mine.
Thanks!
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