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 Message Boards » » engine check light: mass air flow controller Page [1]  
jblee
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OBD II test showed mass air flow controller error.
What do I have to do?

9/30/2005 10:40:34 AM

Tuite
All American
1073 Posts
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Replace it?

Or read manual to see how you can test your current one.

9/30/2005 10:48:50 AM

69
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15861 Posts
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yeah, its a pretty cut and dry good or bad. there is a certain resistance across two of the terminals and if it is not correct then you have to replace it. look it up

9/30/2005 10:56:49 AM

tchenku
midshipman
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i'd clean it with some carb cleaner first... might be a cheap fix

$.79/can

9/30/2005 11:45:11 AM

Seotaji
All American
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would throttle body cleaner be safer?

or how about electrical contact cleaner.

9/30/2005 12:52:43 PM

Poe87
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electrical contact cleaner or rubbing alcohol are best to clean the hot wire elements in the MAF. What vehicle this is on might make a difference as to whether or not it can be cleaned.

[Edited on September 30, 2005 at 1:23 PM. Reason : ]

9/30/2005 1:23:42 PM

69
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it is also very easy to destroy those tiny little wires with a high pressure spray

10/1/2005 12:21:24 AM

optmusprimer
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i suggest going to the quarter wash and hitting it with the high power soap spray!

10/1/2005 12:36:55 AM

jblee
All American
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what wire? where?
do u mean cleaning the air filter area will fix it?

10/1/2005 11:34:56 PM

optmusprimer
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yeah take off your air filter

go to the car wash

start the engine and spray into the air inlet

youll be good to go

10/2/2005 12:17:57 AM

beethead
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dont forget to use soap, too

10/2/2005 3:55:35 PM

optmusprimer
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definitely follow up with the spot-free rinse

10/2/2005 8:15:35 PM

Poe87
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still don't know year, make, model


but the quarter car wash works on everything.

10/3/2005 1:07:23 AM

jblee
All American
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this is not being funny

but it's 99 honda civic hx

10/3/2005 8:19:51 AM

Biofreak70
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i had a problem with that (I believe- it's been a while) with my integra... i never figured out what to do before i wrecked it

oh, and I tried alot of stuff, including replacing it itself- it ended up (combined with something else) giving me reaaaaally funny idling problems (Like reving up to 5k rpm and then dropping down to almost stalling when I wasn't on the gas- haha got a lot of people thinking I wanted to race them)

[Edited on October 3, 2005 at 9:24 AM. Reason : hbvu]

10/3/2005 9:22:20 AM

jblee
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i changed 02 sensor from honda and same problem happened.
took it to merchants and they said the new 02 sensor has problem
will honda replace it for free?

10/7/2005 10:22:05 AM

ScHpEnXeL
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Quote :
" what wire? where?
do u mean cleaning the air filter area will fix it?"


take the sensor off, its a big ass hollow cylinder (well, probalby not so big on that car lol). there are some very very thin wires running across the diameter of it, those are what are being suggested to clean. its not quite as "cut and dry" as somebody said earlier, you usually need an o-scope to actually tell if its working right. touching the wires is pretty much going to fuck them up, spraying them with a good cleaner is the only hope of fixing it...used parts should be cheap and easy to find that car though so you might want to start looking for one.

other possibilities include some kind of fucked up wire, but i doubt it

10/7/2005 10:49:31 AM

Seotaji
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if you can determine that the part is the problem, i believe honda won't have a problem replacing it.

unless your reciept says otherwise.

10/7/2005 2:33:19 PM

Poe87
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Quote :
"you usually need an o-scope to actually tell if its working right. touching the wires is pretty much going to fuck them up, spraying them with a good cleaner is the only hope of fixing it"


mass air meters output a DC voltage, easily monitored by a generic volt meter. The wires are not that fragile that they can't even be touched. I cleaned the wire elements in my air meter with rubbing alcohol and a q-tip. No harm done.

10/7/2005 5:16:17 PM

ScHpEnXeL
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on the f-body i was told you needed an o-scope to see if it was actually working...but oh well, it can't be that expensive to just replace the damn thing on his car lol

10/7/2005 5:17:38 PM

optmusprimer
All American
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Quote :
" i was told"


everyone listen up, if you dont KNOW something, then keep your speculation to yourself. otherwise post a disclaimer that you "dont really know what you are talking about, but..."

10/7/2005 7:00:14 PM

ScHpEnXeL
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it was from a mod on the damn camaro forum asshole, he knew what he was talking about. sure you can see if its getting voltage, but the actual output was a wave that was best looked at with a 'scope. its not worth fucking with if you dont have one already, this guy obviously has no f'ing clue about his car anyways so he should replace the thing and be done with it or take it to somebody to fix

10/7/2005 7:08:43 PM

optmusprimer
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Quote :
"take it to somebody"


i agree, someone who knows what they are doing.

you arent the only one that was addressed to, just another nail in the coffin

10/7/2005 7:26:05 PM

Poe87
All American
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lol

10/7/2005 8:40:03 PM

jblee
All American
1275 Posts
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so Honda messed up on installing? or installed defective O2 sensor?

10/9/2005 12:55:41 AM

Seotaji
All American
34244 Posts
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take it to a shop.

10/9/2005 1:59:16 AM

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