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Date:         Tue, 11 Sep 2007 17:11:57 -0700
Reply-To:     Michael Elliott <camping.elliott@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Michael Elliott <camping.elliott@GMAIL.COM>
Subject:      Re: My poor MPG, O2 sensor seems okay
Comments: To: Joseph Fortino <fortino1@EARTHLINK.NET>
In-Reply-To:  <24102114.1189555223616.JavaMail.root@elwamui-sweet.atl.sa.earthlink.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Interesting hypothesis. If the fuel pressure was low, would mpg be low yet engine power pretty darn normal?

-- Mike "Rocket J Squirrel" Elliott 71 Type 2: the Wonderbus 84 Westfalia: Mellow Yellow ("The Electrical Banana") 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano KG6RCR

On 9/11/2007 5:00 PM Joseph Fortino wrote:

> dude from the stats on your van,, 15mpg thats kinda low > fuel pressure reg?? putting out correct PSI? > > THESE vans keep us thinking all the time.. > > Joe > > -----Original Message----- >> From: "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM> >> Sent: Sep 11, 2007 4:42 PM >> To: vanagon@GERRY.VANAGON.COM >> Subject: Re: My poor MPG, O2 sensor seems okay >> >> On 9/11/2007 2:48 PM Jack R. wrote: >> >>> Changes in your AFM? >> My O2 sensor works and indicates that the mixture is not too rich or too >> lean. I've had the van for a few years and the mileage hasn't changed >> for better or worse. It just stays worse. >> >>> Vacuum leak? >> Would this result in a too rich or too lean mixture? >> >>> Air filter? >> Clean. >> >>> Weight change? >> You saying this van makes my ass look big? >> >> I've always gotten this mileage but I always carry about the same amount >> of gear, so no data there. >> >>> Bad sensor or wire, thus sending weak signal to your computer? >> The fact that the ECU is keeping the mixture neither too rich nor too >> lean suggests that the loop is closed and the ECU is able to "see" the >> sensor. >> >>> Wheel alignment? >> I've had the wheels aligned at least once since I got the van, and did a >> tire change, the wheels are wearing normally, and the mileage has not >> gone through any changes. >> >>> Tire Pressure change? >> Keep 'em aired per sticker. >> >>> Tire balance? >> Two sets of tires, no vibration, no change in the mileage since I've >> gotten the van. >> >>> Bad shock? >> This can affect mileage? How would I know? >> >>> AC Compressor, Alternator, PS Pump... going bad, adding resistance? >> Hm. Engine has surprisingly not overheated even after climbing Sherman >> Grade up Highway 395 to Lee Vining in 109F heat so if there is something >> dragging on the engine I've got good a cooling system. But you're right, >> any extra drag can haul down mileage. However, if something is going >> bad, it's doing so very very slowly because I've had the van for a few >> years and the mileage hasn't changed. No A/C. >> >>> Fouled plug(s), or bad wires or bad distributor cap? >> Plugs are clean, wires seem to be peachy, dizzy cap is clean. >> >>> Bad Fuel injector(s), causing imbalance at load. (run up to three >>> consecutive takes of Techron or other Fuel Injector Cleaner) >> Hm. Hadn't thought of that, either. I'll run some cleaner. >> >> These are great suggestions. Only thing you didn't think of was bad ju-ju. >> >> -- >> >> Mike "Rocket J Squirrel" Elliott >> 71 Type 2: the Wonderbus >> 84 Westfalia: Mellow Yellow ("The Electrical Banana") >> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano >> KG6RCR >


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