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#1
04-02-2006, 08:39 PM
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bad gas mileage
hey i just had my turbo, manifold, alternator, and alt belt replaced. Well, my check engine light came on like a week or 2 ago and now, it seems to miss on the highway, does not take off nearly as fast, and i get about 90 miles to the tank, which turns out to be an awesome 6 miles to the gallon. i dont think it is a gas leak because i do not smell fuel. Please help if you can.
Thanks Lance 92 talon tsi awd all stock auto 
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#2
04-02-2006, 09:41 PM
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Re: bad gas mileage
Do a basic tune up, like change spark plug, and wire, air filter, gas filter, change oil, balance yur tire ( and aligment ) and put enought air on it, put in a bottle of fulse inject cleaner, clean out the TB. and your car is auto turbo, it will eat alot gas then a manual turbo, dont let the rpm pass more then 2.5k, push the gas pedal slow. Good luck with the car.
__________________
GM FOR LIFE !! NEW 1997 Camaro z28 6 speed illa never going back to import  , but killa alway be nice to any DSM he saw looking for 2002 Trans Am LSX UPGRATE 2010 !! 97 Camaro Z28 95 camaro lt1 1992 Pontiac Firebird v6 auto -sold - Pony 1998 Mustang GT 4.6L Manual. Black 1995 Eagle Talon TSI AWD Turbo manual R.I.P 1994 Mitsubishi Eclipse Manual gray -Sold 1997 Mitsubishi Eclipse RS Auto White - Sold
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#3
04-02-2006, 10:34 PM
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Re: bad gas mileage
it could be the o2 sensor
__________________
1997 Eclipse GS-T Performance modification:-evo3 16g-K&N Intake-HKS SSQV b.o.v vented-2.5'' Dejon tool blow thru upper and lower-Dejon large smic-GM MAF-MAF Translator-HKS 3" Carbon Fiber Titanium TBE-stock fuel rail-Walbro 190 fuel pump-PE 650cc injectors-Accel Thundersport wires-NGK series 7 spark plugs-1g intake mani/head- Interior Modification:-Autometer Boost Gauge http://www.cardomain.com/id/xTeamRedLine23x
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#4
04-02-2006, 10:41 PM
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Re: bad gas mileage
Quote:
__________________
GM FOR LIFE !! NEW 1997 Camaro z28 6 speed illa never going back to import , but killa alway be nice to any DSM he saw looking for 2002 Trans Am LSX UPGRATE 2010 !! 97 Camaro Z28 95 camaro lt1 1992 Pontiac Firebird v6 auto -sold - Pony 1998 Mustang GT 4.6L Manual. Black 1995 Eagle Talon TSI AWD Turbo manual R.I.P 1994 Mitsubishi Eclipse Manual gray -Sold 1997 Mitsubishi Eclipse RS Auto White - Sold
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#5
04-02-2006, 11:01 PM
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Re: bad gas mileage
where is tho o2 sensor at in the car
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#6
04-02-2006, 11:03 PM
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Re: bad gas mileage
and could that cause the mileage to be that bad?
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#7
04-02-2006, 11:24 PM
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Re: bad gas mileage
it's most likely a bad 02 sensor, it's located in the 02 housing right after your turbo (connects to downpipe) When this fails, the car doesn't know the a/f ratio at all so it just goes into "safe mode" and sends as much fuel as possible. 9-10 mpg is about right for a failed 02 sensor. It could also be a bad exhaust leak somewhere around the 02 housing, causing the 02 sensor to get a bad read on air.
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now - 2000 civic soon - 2002 is300 
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#8
04-02-2006, 11:52 PM
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Re: bad gas mileage
"...6 miles to the gallon..."
Owned
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 05 Srt4 Agp 3147 w/supporting mods  97 Mx-5 T28, hks man, ebay int/pipes, rfl bov, xtd 6 puck, 3" magnaflow, msd timing box,
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#9
04-03-2006, 07:37 AM
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Re: bad gas mileage
Go to Autozone and have the codes pulled. Get a new O2 sensor while you're there too.
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95 Talon TSI AWD 97 Eclipse GST 
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