Thread: Cleaning the MAFS for better overall driveability & performance.

I have been having some hesitation problems lately and also this weird "dead" spot from about ~4500-6500 RPM. The car would still pull in this range but just not as hard. My oxygen sensor was not working and I replaced that but I still was not satified with the performance I was getting. I took off the MAFS and inspected the little coil elements through the small hole. They looked O.K. but very dirty, black/brown in color. I srayed some brake cleaner in there and followed up with some compressed air. The coil elements in the MAFS became much cleaner upon reinspection, much more silver in color. I Reinstalled the MAFS and took the car for a ride and it made a huge difference! No more "dead" spot and way better driveability. Just thought I'd share since this issue comes up often.

i have made alot of money from that tasty bit of info. especally on ford products

Thanks for sharing I will try this tonight.


Dudeman

I thought it wasn't recommended to spray the actual sensor with anything?

Might be safer to use the CRC MAF sensor cleaner. I dont know the difference in formulation between the two, but i use the MAF cleaner and it works fine, never tried the rake cleaner though.

Yea, I can see this being a problem on cars that are running blow through. PCV vapors if circulated through the intake can gum up the maf as well as coating everything in the intake system in a fine mist of oil.

I had mine setup that way because I need that oil coating haha. Keeps them pipes from rusting. Not really, but I will be addressing the issue.

I hold the MAFS so I can spray through it parallel with the ground. I make sure the part the pigtail plugs into is facing up. At this point I don't really think that much brake cleaner is getting into the electronics part of the sensor, I just blast the small metal coils with the cleaner. I used CRC brakleen in the green can.

I agree, the Maf Sensor cleaner is made for that, brake cleaner is not. For a couple bucks more, might be a little safer with something made for it, and you won't take the chance of ruining a good MAF.

ive used brake cleaner on all the ones ive done with no problems, brake clean is really fast drying so it really wont do any harm, cleans them up nicely. just yeah make sure you hold the electronics part up and you will be fine. Its pretty much sealed anyways so it really wont get in there.

brake cleaner is alot safer than carb cleaner.
carb cleaner will melt plastic. brake cleaner will only if you let it sit and dry several times
we use brake cleaner at the shop for tbs and mafs

the only mafs im worried about using actual maf cleaner on are n60 and q45 and 01 and up maxima stye