Topic: Mass Air Flow Sensor Contamination with Supercharged 2.4L

[TecSolOnt]

   Probably with some guidance on the steps involved I could replace it.   That hose material looks like it might be prone to failure,  it feels like I could poke a hole easily thru it with my finger, seems very dried out, not flexible at all. May be the heat of the engine has impacted the flex hose,  looks like the ribs just broke and then pushed out thru the fabric opening a hole. As I mentioned before there was never any work done around this outside of Dave/Randy installing it and it has gotten worse (MAF issue) over time so perhaps the hose is just aging and breaking down, so one rib breaks then the next.  Where this is broke is probably at a point near the engine where the heat would be just about the highest.

  Makes a lot of sense now why I might be getting the occasional issue with something  contaminating my MAF and it doesn't seem to be oil.  This would certainly defeat the air filter.  I couldn't see the issue until I happened to be checking the clamps and the broken rib caught my finger.

  Muffler tape might seal it up where the ribs are protruding.   Trouble is the material on the hose itself seems to be aging very quickly ,  like more ribs could come thru so probably better to replace it.

[Critterman]

I would replace it, Dave is out today, but as when he sees this I am sure he will come up with an answer.

[TecSolOnt]

  Thanks Critterman !  Look forward to resolving it with Dave. 

  Dave I sent you an email ,  hoping to get some info on the flex hose to replace it.  Thanks!
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 Update 1- talked to Dave and they are shipping me the replacement hose.  Sounds like the older style hoses were susceptible to the heat and deteriorated over time.  I do think with some elbow grease I can get this one off and replaced without removing the S/C  -  so in the end for those of us with S/C's another way to have your MAF get contaminated !   Looks like the heat from the engine eventually caused the metal ribs of the hose to break down and pop open  which in turn tears the fabric on the hose and lets dirty air get by. 

  Thanks to all for their input trying to figure this out and to Dave and staff at DDM !

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  Update 2 - June 19th - got the new hose from DDM which is wrapped in foil to deflect  the heat  from the engine -  replaced the old one ,  a bit of work removing the S/C tubing back to the air filter and manipulating the old hose off and the new one on -   the old hose had a hole in it at least an inch wide ,   just rotted out from the heat coming off the exhaust nearby ,  the ribs broke opening the hose - quite a bit of dirt and dust in it so no wonder the MAF was constantly getting contaminated - this probably started just a year after having DDM put in the S/C as that was when I had the first issue with the MAF , just got worse as time went on - trouble is the hose broke on the exhaust side of the engine and you can't see it looking under the hood , you have to reach down and feel around the area where the hose and pipe come together   - hopefully the new upgraded hose lasts !