AIR/FUEL issue MAF sensor and O2
Thread Starter
Staging Lane
Joined: Mar 2007
Posts: 65
Likes: 0
From: Charlotte
AIR/FUEL issue MAF sensor and O2 I just got a set of headers installed on my 02 Camaro and had it tuned up by Nick Williams. The car ran great for 2 days then it all went downhill. I was told by Nick that the MAF was de-screened which i found to be true yesterday. Now I am aware that the screen is there to produce a laminar flow to allow the MAF to gain an accurate reading. However I think the issue might be a little deeper. I recently put K&N recharge kit with the oil on the air filter. Perhaps i didn't allow sufficient drying time and the oil coated the wires on the MAF. Anyone had this issue? if so how did you clean the sensor?... Or it could simply be the screen.
Now this wasnt the only issue the Bank 2 sensor 1 is throwing a code, i will be switching it out today. Pretty sure silicone from the header seal clogged it up
.... anyways let me know what you guys think. Also if anyone has a screen they would like to sell, please send it my way. Any help is appreciated.
Now this wasnt the only issue the Bank 2 sensor 1 is throwing a code, i will be switching it out today. Pretty sure silicone from the header seal clogged it up
.... anyways let me know what you guys think. Also if anyone has a screen they would like to sell, please send it my way. Any help is appreciated. 
TECH Senior Member
iTrader: (10)
Joined: May 2005
Posts: 5,353
Likes: 2
From: Bossier city,LA barksdale AFB
pulling the screen on a car isnt going to do that sorry. Hell i have descreened and ported a stock maff and remove the center bar and the wide band showed like .01 difference 
Yes it will lean it out, but very very little not enough to hurt or do anything to your car.
Im sure its you 02's
Thats why im tuned in SD and im in open loop untill 1200rpms. dont have to worry about maff crap and wont kill 02's at idle
Yes it will lean it out, but very very little not enough to hurt or do anything to your car.Im sure its you 02's
Thats why im tuned in SD and im in open loop untill 1200rpms. dont have to worry about maff crap and wont kill 02's at idle
Banned
Joined: Feb 2007
Posts: 453
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I just got a set of headers installed on my 02 Camaro and had it tuned up by Nick Williams. The car ran great for 2 days then it all went downhill. I was told by Nick that the MAF was de-screened which i found to be true yesterday. Now I am aware that the screen is there to produce a laminar flow to allow the MAF to gain an accurate reading. However I think the issue might be a little deeper. I recently put K&N recharge kit with the oil on the air filter. Perhaps i didn't allow sufficient drying time and the oil coated the wires on the MAF. Anyone had this issue? if so how did you clean the sensor?... Or it could simply be the screen.
Now this wasnt the only issue the Bank 2 sensor 1 is throwing a code, i will be switching it out today. Pretty sure silicone from the header seal clogged it up.... anyways let me know what you guys think. Also if anyone has a screen they would like to sell, please send it my way. Any help is appreciated.
Now this wasnt the only issue the Bank 2 sensor 1 is throwing a code, i will be switching it out today. Pretty sure silicone from the header seal clogged it up
.... anyways let me know what you guys think. Also if anyone has a screen they would like to sell, please send it my way. Any help is appreciated. Go to the auto parts store and find a cleaner made for cleaning the MAF. The nasty oil from you KN filter got on the heating elements (if the screen was in it might not have happened). Clean the MAF, go easy on the wires, no touching with any object. Allow to dry per instructions on the can and reinstall.
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i am running open loop too, and i love not having my o2's anymore, and ther runs a lot better... also just spray some brake cleaner on the sensor it will work just fine...
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Verdad Gallardo Brake cleaner is good for a lot of stuff, but do not spray it on a the heating elements of your MAF. If you did and it worked, lucky you but its not good advice. A residue can be left behind and cause damage or hot spots on the wire and heating element and will damage the MAF. Get the right stuff for the job.
That's all fine but there is a right way to fix things and the wrong way, I prefer the right way. Too each there own. I try to give accurate repair information and diagnostics on here so people can fix their cars right the first time.
mine was fixed the right way the first time no issues happend.... not trying to argue i dont really think i was in the wrong or have gave bad info to anyone....but its all good, everyone does have their own views..
The wideband's not gonna show you a difference when you're riding around because the car is in closed loop and correcting itself. Maybe you got the only LS1 ever that was not impacted by MAF modification.
Descreened and "ported" MAFs like that are goofy at low airflow, frequently not repeatable, and have excessively rich trimming and WOT until tuned.
This is the kind of mod which, if you really feel it necessary should happen just prior to tuning, and definitely not afterwards.
Thread Starter
Staging Lane
Joined: Mar 2007
Posts: 65
Likes: 0
From: Charlotte
Thanks for all the help with this guys. Im new to the whole tuning deal, most of the things i have done with my car in the past have been suspension or rear end related. I have the o2 switched out and there was a ton of residue on the bank 2 sensor. Also I will be purchasing some MAF cleaner from the store later this afternoon, hopefully this will correct that issue. I have another quick question, when you have a tune done where is it stored in your vehicle? also will disconnecting the battery erase the program or is it stored in memory? my assumption is its like any other computer we use, its stored even when there is no power supplied to the system; therefore it cant be changed unless it is deleted or written to directly...
Banned
Joined: Feb 2007
Posts: 453
Likes: 0
Thanks for all the help with this guys. Im new to the whole tuning deal, most of the things i have done with my car in the past have been suspension or rear end related. I have the o2 switched out and there was a ton of residue on the bank 2 sensor. Also I will be purchasing some MAF cleaner from the store later this afternoon, hopefully this will correct that issue. I have another quick question, when you have a tune done where is it stored in your vehicle? also will disconnecting the battery erase the program or is it stored in memory? my assumption is its like any other computer we use, its stored even when there is no power supplied to the system; therefore it cant be changed unless it is deleted or written to directly...
