BradyPPC Posted December 1, 2009 Report Share Posted December 1, 2009 Ever thought of removing the Maf screen? While the maf screen is mainly there to straighten airflow across the mass air meter in order to provide a stable reading, it can also block debris from entering into the motor. In this case, the car had a tear in the intake boot allowing dirt and debris to enter the engine behind the air filter. The dirt contaminated the mass air meter and caused a lean condition coupled with a bad hesitation under load. Cleaning the mass air meter and sealing the intake boot cured the problem. Large chunk of dirt. http://i548.photobucket.com/albums/ii353/brady/Tech/Maf%20Screen/DSC02988.jpg Dirt, debris, and general grime. http://i548.photobucket.com/albums/ii353/brady/Tech/Maf%20Screen/DSC02989.jpg Tear in the boot that allowed the dirt past. http://i548.photobucket.com/albums/ii353/brady/Tech/Maf%20Screen/DSC02991.jpg Quote Link to comment Share on other sites More sharing options...
DTM Brian Posted December 1, 2009 Report Share Posted December 1, 2009 Excellent post Brady. Please leave the screen in your maf's. Quote Link to comment Share on other sites More sharing options...
neonkiller Posted December 1, 2009 Report Share Posted December 1, 2009 Brady I miss you. Come spring the VW will be there to finally get the rear end fixed... Quote Link to comment Share on other sites More sharing options...
SRTstan Posted December 2, 2009 Report Share Posted December 2, 2009 how did you get that much debri on your maf screen?? I have done tune ups on a could of friends cars that the air filter hadnt been replaced in a couple years and there screens didnt even look close that bad Quote Link to comment Share on other sites More sharing options...
3.1cutlass Posted December 2, 2009 Report Share Posted December 2, 2009 In this case, the car had a tear in the intake boot allowing dirt and debris to enter the engine behind the air filter. The dirt contaminated the mass air meter and caused a lean condition coupled with a bad hesitation under load. Cleaning the mass air meter and sealing the intake boot cured the problem. Tear in the boot that allowed the dirt past. http://i548.photobucket.com/albums/ii353/brady/Tech/Maf%20Screen/DSC02991.jpg Hello McFly!!!! Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted December 2, 2009 Report Share Posted December 2, 2009 how did you get that much debri on your maf screen?? I have done tune ups on a could of friends cars that the air filter hadnt been replaced in a couple years and there screens didnt even look close that bad reading owns you dont it........:gtfo: Quote Link to comment Share on other sites More sharing options...
Cordell Posted December 2, 2009 Report Share Posted December 2, 2009 If the tear was behind the MAF this thread would be pointless. I understand some of the pros to leaving the screen in, but didn't the Z06 come without a screen? Quote Link to comment Share on other sites More sharing options...
SRTstan Posted December 2, 2009 Report Share Posted December 2, 2009 reading owns you dont it........:gtfo: yea im not a big fan of it im more in for the pics Quote Link to comment Share on other sites More sharing options...
3.1cutlass Posted December 2, 2009 Report Share Posted December 2, 2009 Tear in the boot that allowed the dirt past. http://i548.photobucket.com/albums/ii353/brady/Tech/Maf%20Screen/DSC02991.jpg See that. Its in the first post too. Quote Link to comment Share on other sites More sharing options...
Billiumss Posted December 2, 2009 Report Share Posted December 2, 2009 Seen that many times. VERY COMMON. The screen does not keep the MAF "clean", its main purpose it to make sure the MAF gets "straight" air for a better signal, a by-product of having it there is to keep big stuff out of the engine. The K&N Airfilter for the F-body allows this to happen all the time since the filter is not the correct height and doesn't seal to the lid properly. Regular maintance will prevent stuff like this. Quote Link to comment Share on other sites More sharing options...
Sully Posted December 2, 2009 Report Share Posted December 2, 2009 Oops. Guess I shouldn't have taken that out. Oh well. If the engine goes, then it'll be time to go bigger! Quote Link to comment Share on other sites More sharing options...
BradyPPC Posted December 2, 2009 Author Report Share Posted December 2, 2009 Brady I miss you. Come spring the VW will be there to finally get the rear end fixed... Sounds Good! Quote Link to comment Share on other sites More sharing options...
BradyPPC Posted December 3, 2009 Author Report Share Posted December 3, 2009 If the tear was behind the MAF this thread would be pointless. I understand some of the pros to leaving the screen in, but didn't the Z06 come without a screen? The biggest reason for the screen is to straighten out airflow. If the airflow is is stable across the meter without a screen, there is no need for one. In this case the screen had the added benefit of keeping crap out of the motor. Quote Link to comment Share on other sites More sharing options...
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