Interesting Service Bulletin - Did anyone know about this?
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Northstar Engines and System Technical Discussion Discussion, Interesting Service Bulletin - Did anyone know about this? in Cadillac Engine Technical Discussion; Subject: Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES) Light On as a Result of the Use ...
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    codewize's Avatar
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    Interesting Service Bulletin - Did anyone know about this?

    Subject:
    Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES) Light On as a Result of the Use of an Excessively/Over-Oiled Aftermarket, Reusable Air Filter

    The use of an excessively/over-oiled aftermarket, reusable air filter may result in:
    ^Service Engine Soon (SES) Light On
    ^Transmission shift concerns, slipping and damaged clutch(es) or band(s)
    ^Engine driveability concerns, poor acceleration from a stop, limited engine RPM range

    The oil that is used on these air filter elements may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.

    When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively/over-oiled air filter. The MAF, GPS reading should be compared to a like vehicle with an OEM air box and filter under the same driving conditions to verify the concern.
    The use of an aftermarket reusable air filter DOES NOT void the vehicle's warranty.

    If an aftermarket reusable air filter is used, technicians should inspect the MAF sensor element and the air induction hose for contamination of oil prior to making warranty repairs.

    Transmission or engine driveability concerns (related to the MAF sensor being contaminated with oil) that are the result of the use of an aftermarket reusable, excessively/over-oiled air filter are not considered to be warrantable repair items.

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    Re: Interesting Service Bulletin - Did anyone know about this?

    If that ever becomes a problem. Re-clean and properly oil your filter.
    Then, Just spray electrical contact cleaner on the MAF wires (inside). Clear the codes and drive on.

    Rich

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    codewize's Avatar
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    Re: Interesting Service Bulletin - Did anyone know about this?

    Well I'm still running with the filter the way it came. I haven't serviced it yet. I have no code but I do have a transmission problem that I don't want them to blame on the Volant CAI.

    I have no drivability issues but I do have an axle seal leaking at 45k. That's definitely not normal and has been caused by something.

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    Re: Interesting Service Bulletin - Did anyone know about this?

    I can't see how this would effect the transmission.

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    Exclamation Re: Interesting Service Bulletin - Did anyone know about this?

    Quote Originally Posted by wydopnthrtl View Post
    If that ever becomes a problem. Re-clean and properly oil your filter.
    Then, Just spray electrical contact cleaner on the MAF wires (inside). Clear the codes and drive on.

    Rich

    Be carefull with what type of cleaner you use. They now make acleaner specifically fo this purpose. I have seen MAF sensors destroyed by use of electrcal cleaners, brake cleaners, contact cleaners, etc. Not all cleaners are the same, either in how they clean or their composition.


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    Re: Interesting Service Bulletin - Did anyone know about this?

    I believe NAPA used to make one but pulled it. Too many problems associated with using it. The ol' MAF is a fairly sensitive unit doing quite a job. Best to take care around 'em. Gentile puff of air - not out of a can either. K_C

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    Re: Interesting Service Bulletin - Did anyone know about this?

    Fram used to market an Air Hog too, but I haven't seen 'em around much anymore. There was also a blue-colored filter (or maybe that was the Air Hog). I don't trust any filter I can look through, like those low-filtration cotton-gauze designs. I don't leave the cleanliness of my engines up to a thin film of oil. Oil is designed to lubricate metal-to-metal contact, not to filter dirt particles from air.

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    Re: Interesting Service Bulletin - Did anyone know about this?

    Quote Originally Posted by jadcock View Post
    Oil is designed to lubricate metal-to-metal contact, not to filter dirt particles from air.
    Not entirely true. Oil bath filters existed before paper - long before you and I were born

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    Re: Interesting Service Bulletin - Did anyone know about this?

    The filter that came with my Volant is a blue-gray kind of color. I have replaced the factory air box for now. I may put the Volant back in this summer.

    I wanted to make a few dyno runs anyway, one with each, so I figured now was a good time to put the factory box back in.

    I will say this, the car definitely pulls harder with the Volant box in there. The power-band moves up a little but having gone back I can tell the CAI was doing it's job. Which is why I'll put it back in later.

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    Re: Interesting Service Bulletin - Did anyone know about this?

    Quote Originally Posted by EcSTSatic View Post
    Not entirely true. Oil bath filters existed before paper - long before you and I were born
    Yes, but the key is they were designed as such...not an oil coating to make up for the lack of filtration provided by the cotton-gauze media.

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    Re: Interesting Service Bulletin - Did anyone know about this?

    Quote Originally Posted by darien99 View Post
    I can't see how this would effect the transmission.
    The tranny is computer controlled. Exact same thing can happen to some Fords.

    Of coarse.. the *real solution* is not to oil your filter like a 16 yr old who thinks more is always better.


    Good points DocHemi. I also assume people know not to TOUCH the MAF wires. Just a little *light* spray is all it takes guys.

    Rich

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