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what type of oil is better, what about filters?
Over-oiling is no doubt a problem in some cases, true... However, there is
a lot of dicussion in the Ford Mustang Groups (yeah I know, but they have MAFs
as well) is that it is actually oily cotton fibers that become dislogged from
the filers during use. These fibers then land on the hot wire of the MAF, and
over time as this happens a few (who knows how many) times, the hotwire
becomes saturated with carbon from trying to burn off the oil/fibers.
For those that do not know, upon starting a car that has a MAF, the hotwire
heats up to a specific temperature (I think it is something close to 1000
degrees, someone correct me if I am off). Once the wire is hot, the computer
checks the resistance across this wire, which tells the computer what the
ambient air temperature and barometric pressure is, as well as possibly a few
other measurements that I do not recall... With this type of system, the
computer calibrates the duration time of the injectors as well as alters the
timing relative to what information it gathers from the hotwire. If the wire
is dirty, the resistance will be more, which will throw everything the EFI
tries to do off.
I do not have one of these cars, so I have not experience with this, but I
have been told that once the hotwire is saturated with these oily threads, the
impedence is permanently affected, and therefore the MAF is unuseable... Does
anyone have any experience with cleaning these once they have reached this
point?
--
Regards,
David Utley
-----------
Cable Volkswagen
405-470-3129
1-800-522-6793
Quoting Brian Wagner <brian_wagner@sbcglobal.net>:
> David,
>
> I have a K&N on my 01 1.8t, the reason they kill the MAF is becasue people
> over oil them. And when over oiled the oil cakes the MAF sensor itself and
> you throw CEL's.
> Best way to avoid that is to clean properly and oil the filter, then let sit
> for a day. Now comes the fun part, put the filter in an old pillow case and
> swing it around for a few minutes. Due to centripital force (sp) any loosely
> bound oil will be flung off. Install in the car and go. The Airaid you speak
> off is a guaze type filter also offering now additional bebefits over the
> K&N.
>
> And if the MAF does become saturized you can clean it with 99% Isopropyl
> Alcohol, just make sure it is dry before you reinstall it.
>
> If you get any MAFS through the shop you think are broader line send them my
> way, after you have replaced it on the customers car.
>
> Brian
>
> David Utley <mr.utility@highstream.net> wrote:
> Sometimes I am distracted way too much to read this list and really
> understand
> it... I apologize for the confusion...
>
> Suprisingly, I have an opinion on that too... :-)
>
> Mann and Knecht are both used by the factory... Dealer filters are the bomb,
>
> and usually if you buy three or more, they will give you a jobber discount.
> About 6.50 ea... Deutsch and (I have discovered recently) Bosch filters are
> made by the same folks that make Purolator. While I have not torn open a
> Deutsch or a Bosch, the Purolator was almost as bad as the Pennzoil filter I
>
> looked at... WIX, of all the aftermarket stuff I have looked at was pretty
> good. I would used it in a pinch... I personally would use factory above all
>
> else...
> --
> Regards,
> David Utley
> -----------
> Cable Volkswagen
> 405-470-3129
> 1-800-522-6793
>
>
> Quoting David Utley :
>
> > Those with MAFs on their cars say stay the hell away from K&N... Others
> > argue
> > that the same allows too much debris through the medium, and the top end
> > suffers excessive wear... I don't know myself, I am actually using K&N,
> and
> >
> > got a bit better pedal repsonse from it. If you do get one, I recommend
> > cleaning it like every other oil change, as it seems there is less
> > contamination if it is oiled more frequently...
> >
> > PS.. There is a company called airraid (or something close) that is taking
>
> > K&N to task, with another medium on the clean side that is supposed to do
> > away
> > with that possiblility completely... I just did a search on google and
> could
> >
> > not find anything for them... I have something on them at a catalog at
> home,
> >
> > remind me directly and I will send the info to you if you like...
> > --
> > Regards,
> > David Utley
> > -----------
> > Cable Volkswagen
> > 405-470-3129
> > 1-800-522-6793
> >
> >
> > Quoting A J :
> >
> > > Whats the best filter to use ??
> > >
> > > Aaron in SJ-
> > >
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