Poor gas mileage
#1
Racer
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Location: Lexington, KY
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I recall getting VERY good gas mileage in my last 993 i.e. solid 20's for all around driving in town/hwy. On hwy only, I was getting mid 20's.
On this 993, I cannot get over the high teens. What gives?
Thx
On this 993, I cannot get over the high teens. What gives?
Thx
#2
Three Wheelin'
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Originally Posted by Jukelemon
I recall getting VERY good gas mileage in my last 993 i.e. solid 20's for all around driving in town/hwy. On hwy only, I was getting mid 20's.
On this 993, I cannot get over the high teens. What gives?
Thx
On this 993, I cannot get over the high teens. What gives?
Thx
Gerry
(Averaging a solid 24mpg since I got the car almost 2 yrs. ago.)
#4
Racer
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I dont lollygag at all when I am driving in the city. I am always changing the gears to higher gears.
I am going to replace the plugs, rotor cap and see what kind of difference that makes. In my past experience, unless the plugs are just plain foul, it will not make that much difference. And by the idle/general performance of the engine, I doubt that is the case. BUT they need changing anyway.
Thanks all
I am going to replace the plugs, rotor cap and see what kind of difference that makes. In my past experience, unless the plugs are just plain foul, it will not make that much difference. And by the idle/general performance of the engine, I doubt that is the case. BUT they need changing anyway.
Thanks all
#6
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Was getting 18-19 when I first got the car in Dec 06. Had it serviced last month and MPG has increased steadily, averaging 26 on motorways and 20 around town since. New plugs might help?
#7
RL Community Team
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Originally Posted by RallyJon
Once the gas changed for winter, my mileage dropped from ~19 to ~15. All suburban/back roads. Most days, I don't get past 4th gear at all.
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#11
Technical Guru
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Originally Posted by Jukelemon
I am going to replace the plugs, rotor cap and see what kind of difference that makes.
#13
Three Wheelin'
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Good point on the higher ethanol content of winter gas. All my vehicles loose MPG in the winter. As far as the O2 sensors - If you have a 95, you only have one. In a few minutes you can visually inspect it. If its heavily carboned, replace it. If you have a 96+ I understand that you only need to replace the upstream left and right banks. These provide the feedback loops to control fuel trim. The downstream ones monitor cat efficency (pollution) and only throw an MIL light not affecting MPG. Your downstream O2s should never be carboned if your cats are working properly. At ~$100 each for the O2s, be careful blindly replacing these parts unless you are convinced there toast!
#15
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If you drive it properly, your gas mileage is supposed to suck, correct?
rich
96 C4 Cab
Iris Blue/Marble/Marble