'97 E320 / Mass Air Meter: Can it be cleaned??

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T.G. Lambach - 16 Jun 2005 23:55 GMT

My car has done 37,825 miles; its check engine DTC P0170 diagnosis is
that its Air Mass Meter is causing a Fuel Trim Malfunction reading.

Given its low mileage, I suspect its "hot wire" has a bit of dirt on it.

I've read that some ES300 Lexus owners in England have very very
carefully cleaned the "hot wire" of their cars' meter and so save the
replacement cost.

Anyone successfully done that to his M-B?

Tom

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the guvnor - 16 Jun 2005 23:59 GMT

>My car has done 37,825 miles; its check engine DTC P0170 diagnosis is
>that its Air Mass Meter is causing a Fuel Trim Malfunction reading.
[quoted text clipped - 6 lines]
>
>Anyone successfully done that to his M-B?

You can clean them with brake cleaner, sometimes, but it's really only
a short term cure.

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CaptainW116 - 17 Jun 2005 01:49 GMT

Doesn't the platinum wire have a burn off cycle when the engine is shut
down to clean the insulating jacket?

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Øyvind Syljuåsen - 17 Jun 2005 11:23 GMT

> Doesn't the platinum wire have a burn off cycle when the engine is shut
> down to clean the insulating jacket?

Yes, but I think a ´97 M104 should have Hot Film Meter (HFM;
http://www.pvv.org/~syljua/merc/sensors_airmass.pdf ) instead
of wire (but can be cleaned the same way I suppose?)

br,
syljua
W140 S320 1998

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Dori A Schmetterling - 17 Jun 2005 17:24 GMT

Most of the year I'd be saying "br" or even "bbbbbbrrrrrrrrrrrrrr" if I were
living in Oslo...

:-)

DAS

For direct contact replace nospam with schmetterling
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> br,

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