Colder weather = Gas Hog! Holy crap this things eating! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-07-2003, 12:23 PM   #1
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Default Colder weather = Gas Hog! Holy crap this things eating!

I noticed since in got colder I have been getting crappy gas mileage. Last week was normal, I used 93 octane and got slightly lower gas mileage with the colder weather. I used 89 saturday and todays tuesday, ran 176 miles, now on half tank, holy crap! Either my Bonny hates the colder weather, I got some bad 89 gas (runs fine though) or theres something really wrong going on here. I used to be able to get 250 or more miles before I reached Half tank. It has dropped to the 40'* and 50'* this week, cold
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Old 10-07-2003, 01:17 PM   #2
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Might also be your Oxygen sensor on the way out, that contributes to poor economy, as well as a dirty fuel injection system
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Old 10-07-2003, 02:02 PM   #3
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i usually get over 300 on a half a tank (even with a heavy foot)
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Old 10-07-2003, 02:42 PM   #4
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me too im at 159 and im at a half tank i usesally get 200 or so. and ive been grandmaing it. i just replaced the o2 sensor. dont feel bad im getting bad gas mileage too i feel ur pain
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Old 10-07-2003, 02:46 PM   #5
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I just bought a new oxegen sensor 4 weeks ago. Its running great, just this week its eating like theres no tomorrow. Can running a higher octane fuel for a week then putting a lower octane fuel cause this.
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Old 10-07-2003, 02:59 PM   #6
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89BonnieSE89, I think your right about dirty injectors. I just remembered before I filled up saturday I ran the tank almost dry. That could very well be it.
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Old 10-07-2003, 06:50 PM   #7
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I get about 250 miles to a tank if I take it easy. Otherwise it'* usually 210-220ish.

About 12mpg.
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Old 10-07-2003, 07:54 PM   #8
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A friend of mine at work told me it depends on where you buy the gas also. I bought this tank at a Sheetz and he says he get way better gas mileage at Exxon. So I guess what I am going to try is put some injector cleaner in and fill it up at and Exxon and see what happens. This car used to get about 430 miles per tank!
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Old 10-07-2003, 08:03 PM   #9
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The */C eats mine.
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Old 10-07-2003, 08:19 PM   #10
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My right foot eats mine. I've gotten 380 once, but i'm normally around 300 with the way i drive. After starting off this last tank last night with seth i wasn't exactly grannying it up to the govenor.....
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