MAF Question
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 67
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From: around
MAF Question if your MAF is going out or missing up and u unplug it would it still run the same as if it was plugged up or does that mean thats not the problem
the car runs okay until you go half throttle or more and it smokes just a little on the left side only when you go hard on the throttle.
i hope that makes sum kinda since
the car runs okay until you go half throttle or more and it smokes just a little on the left side only when you go hard on the throttle.
i hope that makes sum kinda since
Banned
Joined: Aug 2011
Posts: 1,127
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From: IL
you can i am 99.9% sure but i think it will have a ses code. i bet that is why it is smoking. if you want performance i would buy a new 100mm maf by any company. i heard the maf is a bitch to get out of the lid. you have to heat the lid up to get it out and the same to get it in.
This is the lt1 section so his car wont have a LID, and a 100mm tb would be a waste on a stock motor, since its more than just plug in and go. When you unplug you MAf it will then run in speed density mod. To determine if the MAF has issues a live data stream should be used to determine the values are correct. Car will most likly run rich in speed density mode as well.
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 67
Likes: 0
From: around
This is the lt1 section so his car wont have a LID, and a 100mm tb would be a waste on a stock motor, since its more than just plug in and go. When you unplug you MAf it will then run in speed density mod. To determine if the MAF has issues a live data stream should be used to determine the values are correct. Car will most likly run rich in speed density mode as well.
Live data stream??? would the snap-on tell me if the MAF is causing issues
you can i am 99.9% sure but i think it will have a ses code. i bet that is why it is smoking. if you want performance i would buy a new 100mm maf by any company. i heard the maf is a bitch to get out of the lid. you have to heat the lid up to get it out and the same to get it in.
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Registered User
Joined: Aug 2011
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I believe a MAF will only throw a code if the circuit is broken/shorted, or once the readings get outside of a certain range, so you can have a 'bad' MAF without a code, unplugging it should most definately turn on the engine light, since this breaks the circuit.
Does anyone posting even know how to diag the MAF? Or understand what it does? Codes don't always pop when there is an issue with a part. That is why proper diag is need to be certine what the issue is. For all we know the map sensor can be clogged.
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The MAF runs a current through a filament, then measures what is needed to keep the filament at a certain temperature. More/less air changes the amount of current needed to keep it at a given temperature, allowing it measure the amount of air passing.
Or were you not talking to me?
Or were you not talking to me?
You left out it measures in grams. Lol Anyway we don't have all the info needed to be able to give a correct answer. You need to start with a scanner and some live data while the car is having issues, remember to record so you don't crash into someone. Then go from there. Good luck
Registered User
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You left out it measures in grams. Lol Anyway we don't have all the info needed to be able to give a correct answer. You need to start with a scanner and some live data while the car is having issues, remember to record so you don't crash into someone. Then go from there. Good luck
100% agree more info is needed to diagnose, as well as an understanding of what the data represents.
That's a waste of time and money. Stop giving out bad advice to people. Have it diagnosed or have someone help you so your not wasting time and money. A MAF is an electrical part and once installed can not be returned first off. Second without diag your wasting your time.
That's a waste of time and money. Stop giving out bad advice to people. Have it diagnosed or have someone help you so your not wasting time and money. A MAF is an electrical part and once installed can not be returned first off. Second without diag your wasting your time.
Registered User
Joined: Aug 2011
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Have you ever had one go bad on you? I have and they don't always throw a code unfortunately. Point is try a KNOWN GOOD ONE regardless of whether you buy one from autozone or borrow a buddies, it takes 2 minutes to swap it out....besides, obviously you don't tell them you installed it if you are returning one
Having someone help you do a correct diagnosis is still the best option.
