MAF cleaning is a frequently asked question. Glad to finally get around to making a video on it. I'm sure it's going to help a ton of people out there. :)
It is possible yes because the MAF (along with other sensors) directly control the air/fuel ratio. The ECU uses MAF data to determine how much fuel or air to add or remove at any given millisecond. Other possibile scenarios for your issue include faults with the IAC, air adjustment, timing, head gasket. I always recommend seeking a professional diagnosis though, there's only so much one can do over the internet.
It should work for any car that uses a hotwire type MAF. I believe the Protege uses a VAF so no it wouldn't be the same. However, yours would be the same cleaning procedure as the V6 626/MX-6 (KL-DE) so you can look up tutorials on those.
I think a q-tip would work however it's still not as delicate as a horse hair brush. With a q-tip you have to apply physical pressure to the wire but with a brush there is much less force applied. The force applied can be the difference between a broken wire or not if the wire already has a micro-fracture. The wire certainly can break during normal operation over the life of the car. It's best to do it as gently as possible and nothing beats a horsehair brush for delicate cleaning.
Yes, and I had a major crack in my air intake at one point but it didn't do what it's doing now, I patched the crack, I don't see any disconnected vacuum hoses, I am about to change the Sparks, I will keep updated and will appreciate it if you would do the same
That's great news. Now you know how to fix it if the code ever comes up again. ;) Any chance you remember exactly which code it was so everyone else here can learn from it?
It's a 2.0 automatic. It's funny but when I saw the oil filter, it look like flat all the way around and filters have that oval shape. It looks like the pressure suck in the metal and made the top of the filter flat. thanks for rapid response.
If there's no air leak then I'd check the ignition system by doing a spark test on each plug. If there is healthy spark then move onto the fuel system (possibly low fuel pressure or injectors).
First thing I would look for is an air leak. Does it feel like acceleration takes 2-3 seconds to respond when you go wide open throttle. If yes then definitely an intake air leak or vacuum leak. Everything needs to be air tight all the way from the intake manifold to the air filter box. There are other things that can cause it but I'd start with looking for an air leak as it's the most common thing to check in older cars with old brittle vacuum hoses.
your videos are always helpful for me on my probe. I was at a light awhile back and all of a sudden my car was loud like it had a straight pipe and wouldn't move like it usually does. I think my maf sensor is bad or exhaust gasket somewhere messed up.Replacing whole exhaust soon so will find out what it is
+Jav Munguia You can have the exhaust smoke tested (at the tail pipe) the same way you would smoke test the intake side of an engine (at air filter box). Much safer (and fun) way of going about it. Not every one has a smoke machine but still good stuff to know. :)
I have a 2001 626...4 banger... i have changed the spark plugs and wires ... used lucas gas tune up.. tried premium gas.. and fuel cleaner.. all this made the car run some what better but not really.. it idles really bad when i stop or if im in neutral or park the car putts... cant figure out what it is.. could the MAF be related to this
I replaced spark plugs but didn't replace wires, my dad said they didn't look bad, I thought I noticed one that looked alittle burnt, but im not sure, im about to remove spark plug wires and check again, bad wires could cause a misfire
Has no air leak, had water pump replaced and has new timing belt, It's in time, I just did a compression test, it's getting good compression, my next step is possible oxygen sensor(1&2) or fpr-fuel pressure regulator, im taking it to the exhaust shop I go through and get the exhaust manifold checked out for possible crack or bad gasket, my air intake has no leaks, and tps is newer, it's good, check engine light only comes on and stays on the highway, and when it does I let off the gas and tap on
Hey Devon, my car started running rich Sunday night within a flip of a switch, I replaced the distributor cap and rotor, the spark plugs, but my wires are good, it idles rough and hesitates on acceleration, I took it to the shop and they told me the cap and rotor was bad and I replaced it but still no luck, I cleaned maf sensor and throttle body, any ideas?
I have a 93 mx3 gs 1.8L v6, my car Idles at normal rpm, but it putts alittle and when I accelerate it sputters in every hear until it reaches between 3000-3500 RPMs, any ideas why? Im changing Sparks and wires soon, need some thoughts of what it could be
Sí usted debería restablecer la ECU después de limpiar el MAF. Tengo un video sobre cómo restablecer la ECU. Haga una búsqueda de mi canal para el título de vídeo "Mazda 626 - How to Reset the ECU".
I have mazda 626 1995 DX automatic trans. the MAF might be malfunctioning because when I read error code it gives me the no. of MAF error (reading check engine light flash), the problem is that when check engine light goes off the car goes unsteady and when it turns on the car gos smooth and good. I cleaned the MAF with electric cleaner and check the o ring for sealing but the problem still goes from time to time.. what MAF I should buy that matches my car?. Thanks.
5:58 Your vehicle can use the same exact part # as the one I have. Remove it and see if it's gunked up or if one of the wires is broken. A gunked up hotwire can set intermittent codes, it's definitely worth looking into cleaning. So yes you'll definitely want to use this video as a reference for yours. If cleaning doesn't help and it's still out of spec even with a good o-ring and requires replacement then I've provided the part # at the time specified in the video. Good luck! :)
@@DJDevon3 I cleaned it many times with electric cleaner .. it didn't work ... anyway.. I found many brands of MAF on the web Duralast $115, Dorman $77 and Walker $52.. is it ok to purchase Walker ?..
Have 2000 626 Mazda transmission and timing belt already replaced, Son said that he saw white smoke and a bang and like something fell off. 1st thought was oil filter, but no. Oil was all over passenger underside. Doesn't look like oil pan gaskets. Any thoughts? Thanks!
I4 or V6? Automatic or Manual? Possible backfire due to timing belt slipping. If you recently had the timing belt serviced it's possible the timing tensioner or spring wasn't properly calibrated which can cause the timing belt to jump time which can cause a backfire. Ensure the PCV valve and breather hose aren't clogged as that can contribute to block and head pressure which technically could cause a blow out. Do a compression test to ensure cylinder health. Also check the catalytic converter and exhaust pipe. I have actually heard of the exhaust pipe exploding right before the cat due to a clogged cat.
Jeff Rodiguez I don't understand what you mean. Where exactly was oil coming out of the crank case? Do you mean it was coming out of the oil pan / sump? If you have a bad leak around the oil pan you'll obviously need to address that. What would cause the oil filter to collapse I'm not sure. I would do some internet searches. I've never come across that issue before.
moog More likely to be a vacuum leak but sure could be MAF or clogged catalytic converter or bad timing or bad fuel pump or like one of 30 other things. You have to do diagnostics to rule in/out one culprit at a time. Since you have a 96 you can put an OBD-II scan tool on there and get a lot of information in one shot.
arturo heredia-enriquez The 2.0L manual transmission is still a MAF just a slightly different design. The 2.5L (V6) has a VAF. I do have one and can make a video on that if that's what you mean.
Sounds like a misfire. Remove and inspect the spark plugs for oil fowling. Is there oil on the either end of the plug? Do a spark test and make sure it's not intermittent spark loss because of a bad distributor or coilpack. You can't just replace the plugs you have to do a spark test. Look up some videos on the subject if needed.
I was told by my mechanic that it's possibly the exhaust manifold, it's eating through gas and smells like gas only through the exhaust, I was told it's possibly the o2 sensors, because of the gas eating and gas smell issue
moog Air filter box will not cause an issue other than perhaps debris getting inside or a mouse or squirrel nest. Air is only measured between the engine and the MAF. The air box is not part of the measured air.
No i figured that also just saying. the problem started when the fellow sprayed degreaser on the Engine at a car wash it has been doing it ever since. Something simple electrical.
MAF cleaning is a frequently asked question. Glad to finally get around to making a video on it. I'm sure it's going to help a ton of people out there. :)
You uploaded this video at the perfect time for me! Thanks so much man.
Thank you. My check engine light is now off. I never touched the little coils either MAF cleaner worked perfectly.
It is possible yes because the MAF (along with other sensors) directly control the air/fuel ratio. The ECU uses MAF data to determine how much fuel or air to add or remove at any given millisecond. Other possibile scenarios for your issue include faults with the IAC, air adjustment, timing, head gasket. I always recommend seeking a professional diagnosis though, there's only so much one can do over the internet.
Thanks for your video!
It should work for any car that uses a hotwire type MAF. I believe the Protege uses a VAF so no it wouldn't be the same. However, yours would be the same cleaning procedure as the V6 626/MX-6 (KL-DE) so you can look up tutorials on those.
Thank you for your help. This is a very good video!
I think a q-tip would work however it's still not as delicate as a horse hair brush. With a q-tip you have to apply physical pressure to the wire but with a brush there is much less force applied. The force applied can be the difference between a broken wire or not if the wire already has a micro-fracture. The wire certainly can break during normal operation over the life of the car. It's best to do it as gently as possible and nothing beats a horsehair brush for delicate cleaning.
Yes, and I had a major crack in my air intake at one point but it didn't do what it's doing now, I patched the crack, I don't see any disconnected vacuum hoses, I am about to change the Sparks, I will keep updated and will appreciate it if you would do the same
That's great news. Now you know how to fix it if the code ever comes up again. ;) Any chance you remember exactly which code it was so everyone else here can learn from it?
It's a 2.0 automatic. It's funny but when I saw the oil filter, it look like flat all the way around and filters have that oval shape. It looks like the pressure suck in the metal and made the top of the filter flat. thanks for rapid response.
If there's no air leak then I'd check the ignition system by doing a spark test on each plug. If there is healthy spark then move onto the fuel system (possibly low fuel pressure or injectors).
First thing I would look for is an air leak. Does it feel like acceleration takes 2-3 seconds to respond when you go wide open throttle. If yes then definitely an intake air leak or vacuum leak. Everything needs to be air tight all the way from the intake manifold to the air filter box. There are other things that can cause it but I'd start with looking for an air leak as it's the most common thing to check in older cars with old brittle vacuum hoses.
That's odd usually it's the other way around because heat increases resistance in wiring. I'd look into the IAC more so than the MAF for that one.
your videos are always helpful for me on my probe. I was at a light awhile back and all of a sudden my car was loud like it had a straight pipe and wouldn't move like it usually does. I think my maf sensor is bad or exhaust gasket somewhere messed up.Replacing whole exhaust soon so will find out what it is
+Jav Munguia You can have the exhaust smoke tested (at the tail pipe) the same way you would smoke test the intake side of an engine (at air filter box). Much safer (and fun) way of going about it. Not every one has a smoke machine but still good stuff to know. :)
I have a 2001 626...4 banger... i have changed the spark plugs and wires ... used lucas gas tune up.. tried premium gas.. and fuel cleaner.. all this made the car run some what better but not really.. it idles really bad when i stop or if im in neutral or park the car putts... cant figure out what it is.. could the MAF be related to this
I replaced spark plugs but didn't replace wires, my dad said they didn't look bad, I thought I noticed one that looked alittle burnt, but im not sure, im about to remove spark plug wires and check again, bad wires could cause a misfire
Has no air leak, had water pump replaced and has new timing belt, It's in time, I just did a compression test, it's getting good compression, my next step is possible oxygen sensor(1&2) or fpr-fuel pressure regulator, im taking it to the exhaust shop I go through and get the exhaust manifold checked out for possible crack or bad gasket, my air intake has no leaks, and tps is newer, it's good, check engine light only comes on and stays on the highway, and when it does I let off the gas and tap on
Nick Stufflebean i have this problem but it's non of what you said i did everything including the 2 o2 sensors
Hey Devon, my car started running rich Sunday night within a flip of a switch, I replaced the distributor cap and rotor, the spark plugs, but my wires are good, it idles rough and hesitates on acceleration, I took it to the shop and they told me the cap and rotor was bad and I replaced it but still no luck, I cleaned maf sensor and throttle body, any ideas?
I have a 93 mx3 gs 1.8L v6, my car Idles at normal rpm, but it putts alittle and when I accelerate it sputters in every hear until it reaches between 3000-3500 RPMs, any ideas why? Im changing Sparks and wires soon, need some thoughts of what it could be
Sí usted debería restablecer la ECU después de limpiar el MAF. Tengo un video sobre cómo restablecer la ECU. Haga una búsqueda de mi canal para el título de vídeo "Mazda 626 - How to Reset the ECU".
DJ, I have a 95-GLX Euro Specked , the sensor does not have screws on top, how do I remove it to clean it thanks?!
I would pose that question to Mazda626.net where there are many many European members. I didn't even know about that issue.
Ok bro, apprecaite the response as always!
I have mazda 626 1995 DX automatic trans. the MAF might be malfunctioning because when I read error code it gives me the no. of MAF error (reading check engine light flash), the problem is that when check engine light goes off the car goes unsteady and when it turns on the car gos smooth and good. I cleaned the MAF with electric cleaner and check the o ring for sealing but the problem still goes from time to time.. what MAF I should buy that matches my car?. Thanks.
5:58 Your vehicle can use the same exact part # as the one I have. Remove it and see if it's gunked up or if one of the wires is broken. A gunked up hotwire can set intermittent codes, it's definitely worth looking into cleaning. So yes you'll definitely want to use this video as a reference for yours. If cleaning doesn't help and it's still out of spec even with a good o-ring and requires replacement then I've provided the part # at the time specified in the video. Good luck! :)
@@DJDevon3 I cleaned it many times with electric cleaner .. it didn't work ... anyway.. I found many brands of MAF on the web Duralast $115, Dorman $77 and Walker $52.. is it ok to purchase Walker ?..
Have 2000 626 Mazda transmission and timing belt already replaced, Son said that he saw white smoke and a bang and like something fell off. 1st thought was oil filter, but no. Oil was all over passenger underside. Doesn't look like oil pan gaskets. Any thoughts? Thanks!
I4 or V6? Automatic or Manual? Possible backfire due to timing belt slipping. If you recently had the timing belt serviced it's possible the timing tensioner or spring wasn't properly calibrated which can cause the timing belt to jump time which can cause a backfire. Ensure the PCV valve and breather hose aren't clogged as that can contribute to block and head pressure which technically could cause a blow out. Do a compression test to ensure cylinder health. Also check the catalytic converter and exhaust pipe. I have actually heard of the exhaust pipe exploding right before the cat due to a clogged cat.
I poured oil back in crank case and immediately began to come out of oil crank case. What do you think?
Jeff Rodiguez I don't understand what you mean. Where exactly was oil coming out of the crank case? Do you mean it was coming out of the oil pan / sump? If you have a bad leak around the oil pan you'll obviously need to address that. What would cause the oil filter to collapse I'm not sure. I would do some internet searches. I've never come across that issue before.
Ok, I replaced the spark plugs, no more sputtering when accelerating, but it still putts when idling sometimes
@devon hey man just resently i got a p0171 kode. when the kar is hot it stil idle i park at 1100. there are no air leaks. u think the maf i dirty?
buenas amigo luego de limpiar estos sensores hay que resetear la ecu, si es si por favor me dice como hacer el reset
I have 626 96. idles great, but on acceleration bogs down. Possible MAF?
moog More likely to be a vacuum leak but sure could be MAF or clogged catalytic converter or bad timing or bad fuel pump or like one of 30 other things. You have to do diagnostics to rule in/out one culprit at a time. Since you have a 96 you can put an OBD-II scan tool on there and get a lot of information in one shot.
i have 1998 mazda 626 2000cc manual transmission car. is the MAF sensor same in automatic and manual transmission cars?
In some years no. In the 1998 yes. Part # FSD713215
thnx mate !
there was but on my scan tool i had selected the wrong car type and it brought that up. PO 325 code.
i erased it and has not came back on.
Hey, will this procedure work for the 1996 Mazda Protege LX?
please make another video refering to the other kind of MAF SENSOR, the one su call : flag type which is used on the standard transmission
arturo heredia-enriquez The 2.0L manual transmission is still a MAF just a slightly different design. The 2.5L (V6) has a VAF. I do have one and can make a video on that if that's what you mean.
Sounds like a misfire. Remove and inspect the spark plugs for oil fowling. Is there oil on the either end of the plug? Do a spark test and make sure it's not intermittent spark loss because of a bad distributor or coilpack. You can't just replace the plugs you have to do a spark test. Look up some videos on the subject if needed.
I was told by my mechanic that it's possibly the exhaust manifold, it's eating through gas and smells like gas only through the exhaust, I was told it's possibly the o2 sensors, because of the gas eating and gas smell issue
p1131. The check engine light came back on, though. The car is running lean. I can hear a hiss, so there is a vacuum leak somewhere.
Check for ECU leaks, loose spark plugs, spark plug coils, and a loose PCV valve.
The fuel pump was replaced as well. Knock sensor possiblity
moog Is there a knock sensor code?
thanks!!!
how about a q-tip?
I hooked the MAF engine died. No problem there. I just bought the car off a friend noticed that the air filter box will not seal as well.
moog Air filter box will not cause an issue other than perhaps debris getting inside or a mouse or squirrel nest. Air is only measured between the engine and the MAF. The air box is not part of the measured air.
good video thx=)
@devon kode readr said system lean
Omar, Test throttle position sensor, injectors, and fuel pressure regulator.
I don't think your issue is MAF related.
ok wil do.
Oh ya my car is a 1998 626 LS 4 banger.
No i figured that also just saying. the problem started when the fellow sprayed degreaser on the Engine at a car wash it has been doing it ever since. Something simple electrical.
moog Take it in for service. There's too many things to check.
Yeah about 20 different things and there's not enough room in a TH-cam comment to cover them. Recommend you seek a professional for service.
Unhooked My bad