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#16
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE Last edited by Texholdem; 08-13-2008 at 12:52 AM. |
#17
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On my 95 E320 (W124), I would get 27-29 mpg, but that was mostly highway. You're in the 96 W210, which at least looks more aerodynamic - you should be getting good 20's all day long.
Plus, you have OBD II diagnostics, so what could it be that doesn't throw a code? 1. Vacuum line: should give you a mixture code, but easy enough to check all lines (including under the intake manifold, arch your neck and squint really long from the front with a flashlight. Skinny arms can reach under there) 2. Dragging parking brake: jack up wheel, block the others so your car stays put, and rotate the rear wheel in neutral with the brake off. It should spin a turn or two by itself. Adjust with the ratchet device inside the drum. Did someone mess with the adjustment in May, when you had new tires put on? 3. Broken cat: Fortunately I'm not an expert on this one, but I think you will get misfiring with codes first and hear rattling in the exhaust. 4. Fuel leak: won't throw a code, but you would know by now. 5. MAF, ignition problems are code sprouters.
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Prost! |
#18
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Tires can vary a lot in actual size even if nominally the same size. A taller tire will compute to lower economy but actually be better on consumption. The only way to be sure is to measure the actual diamater of before and after.
Or you could check against the mile markers on the interstate. Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#19
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The tread can also affect fuel economy. When I put more agressive tires on the Suburban -- same size as stock, my mileage went down by 4mpg. It has taken a lot of tweaking to get it back up to 16mpg combined. I would also try this to look for fuel leaks. Get some clean cardboard and put the car on top of it. Start and run the car while shining a bright light underneath. You might have a leak that is only happening when the system is under pressure. I would also run the car and really examine all the fuel lines under the hood. I had such a leak in the BMW. I got crappy gas mileage until I found and corrected it. Does this car have a cold engine enrichment booster? If so, it could be stuck open. That was another issue with the BMW that cost me mpg... Check all the temperature senders to make sure they are connected and working.
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"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy" Current Monika '74 450 SL BrownHilda '79 280SL FoxyCleopatra '99 Chevy Suburban Scarlett 2014 Jeep Cherokee Krystal 2004 Volvo S60 Gone '74 Jeep CJ5 '97 Jeep ZJ Laredo Rudolf ‘86 300SDL Bruno '81 300SD Fritzi '84 BMW '92 Subaru '96 Impala SS '71 Buick GS conv '67 GTO conv '63 Corvair conv '57 Nomad |
#20
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What about O2 sensors
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1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual |
#21
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Both O2 sensors were replaced 4 months ago.
Thanks to all for your contributions.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE |
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cat
Texholdem ,
An emission test will reveal if you have a faulty cat... But have you noticed any loss of power ?, mostly when you floor it from 60 miles per hour to 80 miles per hour? |
#23
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I think the next reasonable move is the emission test. Thanks to all.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE |
#24
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#25
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Above the thread are following ads:
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE |
#26
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1994 C280, dark green metallic 105k miles 1991 190E 2.6, Black 191,500 miles (sold to another forum member) 2003 Chevy Tahoe LT, Redfire Metallic 105k miles 1989 Mustang GT Cobra Convertible 43k miles |
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