Date: Mon, 13 Sep 1999 02:40:04 GMT From: David M. Arnold <darnoldnopsampc.com> Subject: Re: Gas Mileage - WHY REDUCED...
Could be a number of things: O2 sensor, computer, cold start valve, injector(s). O2 sensor is a good place to start. Often, the O2 circuitry would lock the mixture rich as a failsafe in the event of sensor failure. Running too rich won't kill an engine, while running too lean can. In article <37DC545E.A9277E17nopsamnet>, timbnopsamnet wrote: > I have a Saab 9000 Turbo - 87 - great shape, high miles... Stick - if > that matters. My gas mileage used to hang somewhere between 24mpg and > 30mpg. Now I am getting 18 or 19. Also leaving sooty residue in > exhaust - > > I am assuming it is running "rich", but what could be causing this... > What should I try! > > Oxygen Sensor? > > Sent via Deja.com http://www.deja.com/ Share what you know. Learn what you don't.
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