I just had a dealership tell me that my MAF sensor went bad due to oil from the filter of my Weapon R Special Weapon intake getting on the senor. Can this happen? Will SRI actually cause these to go bad? Is there anything i can do to prevent this from happening agian (other then going back to the stock intake)?

 

its news to me i have never heard of this.... and the filter would have to be dripping w/ oil to cause that.

damn dealers

 

I know if you do a search on MAF sensors you'll come up with a bunch of hits. I do know that A bunch of xb owners were having the same problem with the Injen SRI. I think people started using a breather filter on the one of the hoses. I forget which one, but I have noticed that there are less topics about bad MAF sensors. Do a search or talk to some of the xb owners they might have more info for you.

 

Wouldn't it possible to just clean the MAF? Or is it 100% going bad (aka going into safe mode)?

Cleaning the MAF is super easy an can be done in less than 10 minutes.

 

Some of the xB owners have tried it. Most of them ended up having to go back to the stock set up. Unfortunately my experience with MAF sensors on newer cars is that even when cleaned they don't always work the way they did before.

Check this post
https://www.scionlife.com/forums/vie...&highlight=maf

There are better posts but I am at work so you'll have to a more indepth search yourself. Good luck.

 

My wife's 2001 Corolla had a CEL, took it to Western Auto to use their scan tool. Read that it was running too rich. Bought some spray intake cleaner ($3.00), removed the MAF from the intake, sprayed the cleaner directly on the exposed sensor wires (carefully, they are extremly thin) until they were shiny. I then waited 'til it was dry (which doesn't take long) and reinstalled the MAF. Started the car, CEL gone, throttle response and gas mileage restored. 400 miles later, still no CEL.

Not bad for $3.00 and 10 minutes of my time.

Didn't know if this was the same case or not, but if the CEL code is saying "bad MAF" then it's past the point of cleaning.

I'll always borrow a scan tool to read the code myself before taking it anywhere just in case the mechanic tries to scam me. They will, most of the time, go the route that nets them the most money.

Are the filters coming with that much oil on them to drip?

 

YES, your MAF can be damaged from intake filter oil. My CEL came on a while back (I have the InjenSRI) and when I checked the MAF it was filthy black and oily. I cleaned it with contact cleaner and reset the ECU. The light went out, only to keep coming back on again and again. Cleaning the MAF didn't work any more, it was broken. I tossed my stock airbox on and fooled the dealer into replacing it under warranty.

So in this case, your dealer is right in blaming your aftermarket parts. You should go back to the stock airbox and try to get a different dealer to replace it.

Good luck

-THE DON

 

some people have the darndess luck.

 

can't see this happening, I had a 05 scion tc with a weapon r secret weapon intake and put 13000 on the car and never had a problem!

 

I had a sri and the same thing, it died

 

the dealer told me the same ____. they lied, it's throwing a CEL cause it sees too much air going through, the car just needs to learn it, unplug the battery and let sit, then reinstall and run the car idle for a few mins. the dealers are just being dicks so they can threaten to void your warranty and encourage you to get them to install it for money.

 

the o-ring is small on the maf sensor make sure the sensor is sitting perfectly centered in mount, if its not it will throw a cel.