How to clean MAF under $10 w pics
06-03-2008, 11:24 AM
#1
Write up: How to clean MAF under $10 w pics
I've seen a lot of people asking about how to clean the MAF, so I decide to do my own and show it to them.
Things you need during the cleaning:
CRC MAF cleaner
Torx screwderiver #15
10mm wrench
Preparation:
Park you car under a shade or a place that isn't dusty.
Disconnect the bettary using the 10mm wrench to avoid damaging the ECU.
Location:
The Mass Air Flow sensor is located on a tube between the engine filter box and the throttle filter.
Things you need during the cleaning:
CRC MAF cleaner
Torx screwderiver #15
10mm wrench
Preparation:
Park you car under a shade or a place that isn't dusty.
Disconnect the bettary using the 10mm wrench to avoid damaging the ECU.
Location:
The Mass Air Flow sensor is located on a tube between the engine filter box and the throttle filter.
Last edited by jasonmax; 06-03-2008 at 09:53 PM.
06-03-2008, 11:25 AM
#2
Remove the MAF:
1. Clean the area around the MAF and blow away the dust on it.
2. Press the clip on the socket and pull upwards to dissconnect the MAF.
3. Unsrew to screws that hold the MAF using the Torx screwderiver #15. Pull the MAF upwards to remove from the housing. If it's difficult to pull it out, twist the MAF 90 degree, so you can pull it out with your both hands.
4. Remove the MAF carefully from the housing and make sure you don't drop it. Clean the housing and cover it with a damp towel to prevent dust getting in.
1. Clean the area around the MAF and blow away the dust on it.
2. Press the clip on the socket and pull upwards to dissconnect the MAF.
3. Unsrew to screws that hold the MAF using the Torx screwderiver #15. Pull the MAF upwards to remove from the housing. If it's difficult to pull it out, twist the MAF 90 degree, so you can pull it out with your both hands.
4. Remove the MAF carefully from the housing and make sure you don't drop it. Clean the housing and cover it with a damp towel to prevent dust getting in.
Last edited by jasonmax; 06-06-2008 at 09:35 PM.
06-03-2008, 11:25 AM
#3
Clean the MAF:
1. A MAF has two air tunnels on it, so you have to clean both of them.
( red arrows show how air flows through the MAF)
Only 5.5th gen has this intake air temp sensor, 5th gen has seperated one.
2. Take you MAF cleaner and put the pipe on it, so you can reach small areas. When you clean the MAF, DO NOT touch anything in side the tunnel with the pipe because that can damage the sensor.
3. Keep blowing the cleaner for 2-3 seconds to each tunnel, and you can also clean the resistor at the same time. After cleaning the MAF, let it sit for 15 minutes to dry. I prefer to put it like this, so dust won't get in.
Reinstall:
When you put the MAF back, just make sure the air flow direction is correct, with two tunnels/holes facing to the air filter.
Relearn procedure:
After putting the MAF back to the car, perform the ECU reset and Idle relearn procedures.
1. A MAF has two air tunnels on it, so you have to clean both of them.
( red arrows show how air flows through the MAF)
Only 5.5th gen has this intake air temp sensor, 5th gen has seperated one.
2. Take you MAF cleaner and put the pipe on it, so you can reach small areas. When you clean the MAF, DO NOT touch anything in side the tunnel with the pipe because that can damage the sensor.
3. Keep blowing the cleaner for 2-3 seconds to each tunnel, and you can also clean the resistor at the same time. After cleaning the MAF, let it sit for 15 minutes to dry. I prefer to put it like this, so dust won't get in.
Reinstall:
When you put the MAF back, just make sure the air flow direction is correct, with two tunnels/holes facing to the air filter.
Relearn procedure:
After putting the MAF back to the car, perform the ECU reset and Idle relearn procedures.
Last edited by jasonmax; 01-16-2010 at 07:31 PM.
06-03-2008, 11:54 AM
#5
So... any thoughts after it was cleaned? Because I sprayed mine with the CRC too and did nothing. Perhaps mine is already gone... but I ordered a new one and JUST received it via FedEx from DaveB as I'm typing this reply lol. Imma install it @ lunch! w00t w00t! Fingers crossed! Hopefully no more 15-17mpg!
06-03-2008, 12:47 PM
#9
So... any thoughts after it was cleaned? Because I sprayed mine with the CRC too and did nothing. Perhaps mine is already gone... but I ordered a new one and JUST received it via FedEx from DaveB as I'm typing this reply lol. Imma install it @ lunch! w00t w00t! Fingers crossed! Hopefully no more 15-17mpg!
06-03-2008, 02:08 PM
#11
I just install my new MAF and maxi is pulling like a champ! I guess I had a bad MAF the whole time with no codes. Moral of story is... it doesn't matter how you clean it or what you clean it with... when it craps out, it's just out, period! <--- That's the case for me at least. Time to see what MPG I gonna get!
But anyways! Mad props for the step by step with color pix!
But anyways! Mad props for the step by step with color pix!
06-03-2008, 03:30 PM
#12
Didn't reset the ECU or do an idle relearn either. Cleaning the MAF didn't seem to affect anything other than getting rid of the bog.
--------------------
You don't have to worry too much about how you reinstall the MAF, it only bolts up with it in the correct position.
06-03-2008, 05:20 PM
#13
Hey! Great write-up op! You made the process so easy I immediately ran to my car and brought my MAF inside to clean...however, to my surprise I noticed that my MAF was slightly different than yours...there is no resistor as yours has shown in the picture! I was wondering if you could tell me the value that yours is reading across that resistor? If anyone knows the value of the resistor that is on the MAF please let me know I would like to put a replacement in before I order a new MAF....might as well try! Thanks
06-03-2008, 05:27 PM
#14
Or is this a Thermistor of some type??? Is it replaceable? The help is much appreciated
EDIT: This is the thread that I read about a Thermistor that is the main difference between 2k2 and 00 MAFs...I have an 00 is this the reason there is no "therm/resistor in that spot?
http://forums.maxima.org/showthread....+for+2k2's
EDIT: This is the thread that I read about a Thermistor that is the main difference between 2k2 and 00 MAFs...I have an 00 is this the reason there is no "therm/resistor in that spot?
http://forums.maxima.org/showthread....+for+2k2's
Last edited by Nakulbhatt87; 06-03-2008 at 05:30 PM.
06-03-2008, 08:56 PM
#17
but this is a good write up for those who want to clean their MAF.
06-03-2008, 08:58 PM
#18
Hey! Great write-up op! You made the process so easy I immediately ran to my car and brought my MAF inside to clean...however, to my surprise I noticed that my MAF was slightly different than yours...there is no resistor as yours has shown in the picture! I was wondering if you could tell me the value that yours is reading across that resistor? If anyone knows the value of the resistor that is on the MAF please let me know I would like to put a replacement in before I order a new MAF....might as well try! Thanks
I think the Nissan X-Trail uses the same MAF because I used to drive that car, and I had the MAF replaced.
I don't know if the QR25DEs use the same MAF as ours, but the X-Trail was QR25DE.
06-05-2008, 06:10 PM
#25
I've got a 2000 I30. I am thinking that it's just a thermistor as stated in http://forums.maxima.org/showthread.php?t=258878&highlight=2k1+MAF+upgrade+ for+2k2's....the pictures don't work on this page so I couldn't be exactly sure from the pictures. Thanks for the help everyone, and sorry for the pestering I just want to be absolutely sure. Thanks
06-05-2008, 10:10 PM
#26
Member
Join Date: May 2008
Location: Shelbyville, TN
Posts: 32
coming from someone who in no way claims to be mechanically suave, would you recommend for me to do this? i just don't want to mess anything up... I drive a 2000 Max and it has roughly 133k miles.
and I have noticed that I do bog around 3500rpm
and I have noticed that I do bog around 3500rpm
Last edited by Bradbmx1; 06-05-2008 at 10:12 PM.
06-06-2008, 04:49 AM
#29
Great writeup, good pictures!
I cleaned it last night and this morning felt better response, nice! Did not reset ecu or idle relearn procedures.
I wonder how frequently this can be done?
I cleaned it last night and this morning felt better response, nice! Did not reset ecu or idle relearn procedures.
I wonder how frequently this can be done?
06-06-2008, 06:16 AM
#30
06-06-2008, 06:18 AM
#31
cleaned the MAF last night while we installed an RSB on my buddies accord
took 20 minutes all together and most of that was waiting for it to dry
DEF feel a difference
no more hesitation from a stop, and more consistent power curve. I dont feel as many jumps in power, now its a smooth acceleration
thanks for the write up, ive wanted to do it but was tooooooooooooo lazy to get off my *** and do it until this write up
took 20 minutes all together and most of that was waiting for it to dry
DEF feel a difference
no more hesitation from a stop, and more consistent power curve. I dont feel as many jumps in power, now its a smooth acceleration
thanks for the write up, ive wanted to do it but was tooooooooooooo lazy to get off my *** and do it until this write up
06-06-2008, 06:36 AM
#32
That stuff dries in seconds, more like evaporates.
I'm lucky to exceed 12% here.
06-07-2008, 08:57 AM
#36
06-07-2008, 08:58 AM
#37
it's easy to do, so I think I'll do it every other oil change.
Last edited by jasonmax; 06-07-2008 at 09:00 AM.
06-07-2008, 09:02 AM
#38
