crappy gas mileage - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-21-2007, 10:00 AM   #11
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Quote:
Originally Posted by jhill52788
there is a weird smell sometimes that comes out of my vents but idk what it is, and its only sometimes. and im not sure when the o2 sensor was changed last? The weather is crazy, it was almost 70 last week then snowed the other day. i guess ill get some gas cleaner stuff and put it in that seems to help out my friends
As for the wierd smell from your vents, I doubt that has anything to do with your gas mileage. You may want to address that in another thread. But be a bit more specific about when it happens and whether the occurances are random or happen when you have the heat or A/C on, etc.

O2 sensor... Like Vital says, it would help us to help you if you would go to the top of the page, click on "Profile" and put your car'* year and trim level in a signature line. That having been said, and since I haven't read all your other posts:
What is your mileage?
How long have you personally had this car?
And what mechanically have you done to the car, if anything?
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Old 03-21-2007, 10:01 AM   #12
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He'* a 95 SE in the meantime of adding it.

Recent items done were cleaning of MAF and IAC. This helped idle and caused a heavy foot problem IIRC.
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Old 03-21-2007, 01:25 PM   #13
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Usually in the case of the 94-95'* if there are no other known issues and no codes... And the Mileage has suddenly tanked... The O2 is usually suspect to failure...

If you replace it Please use AC Delco..


Anyone in the area have a scantool that will read the 95?

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Old 03-21-2007, 01:43 PM   #14
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Nope. No one around with one. You coming up early?
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Old 03-21-2007, 11:32 PM   #15
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i just filled up again today with 16.5 gallons
gonna see how this tank holds up? and if it sucks again i guess ill replace the o2 sensor ...wish me luck haha
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Old 03-22-2007, 12:18 PM   #16
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Luck on the tank or sensor? Sensor is cake..I've got the tool for that. (If you didn't already guess that one..lol)
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Old 03-23-2007, 12:38 PM   #17
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the tank haha. i figured you had the tool haha
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