Date: Sat, 02 Jul 2005 18:12:08 +1000 From: pmg <pmgnospamytogroup.com.au> Subject: Re: 900 VERY annoying trouble
Thanks MH I have a manual and it certainly mentions no amm but thanks for the great explanation. But can you solve my problem? Cheers, Pete MH wrote: >> Can someone tell me what an "air mass meter" is? > > It's exactly what the name implies; it measures the mass of air being > sucked into the engine, so the ECU will know how much fuel to inject. > There's a fixed (stoichiometric) 14.6:1 air:fuel ratio. > >> What does it look like, > > Somewhat like a venturi in a carburetor, but with a heated platinum wire > inside it. > >> where does it sit > > Between the air filter and the throttle plate > >> and what does it do? > > The platinum wire is heated to a constant 100deg C. The passing air flow > cools it and changes its resistance, from the change the ECU can > calculate the mass of the airflow. > >> I'm not sure if my Saab has one or not > > Only on 16 valve engines. 8v engines have another type of airflow > sensor; a large baffle plate. Its movement directly controls the fuel > pressure in the fuel distributor > >> I've not heard of it before so I think I don't have one. It is the 8 >> valve motor. > > > You need a manual.... >
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