holy mileage increase!! (look at my cat, page2!!) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-16-2005, 03:29 AM   #1
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Default holy mileage increase!! (look at my cat, page2!!)

so i did my 120k tuneup...

replaced many a things, along with the o2 (oxygen sensor)...

i was averaging about 225 miles to a tank, about 12mpg... and i figured it was just cuz i drive like a devil...

after the o2 change, i saw an IMMEDIATE increase from 225 miles to 375 miles out of my tank...

now im thinking, WHY DIDNT I DO THIS SOONER!!!

i wasted so much gas... so im passing this on to you... think you got bad mileage, change the damn $30 part!!!!
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Old 04-16-2005, 10:04 AM   #2
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yea i only get about 12 miles to the gallon lol. Isnt there two of them or no?? Also i thought they were like 50-60?
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Old 04-16-2005, 10:59 AM   #3
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You thought 12 was normal for hard driving? Man I get like 17 city with a heavy foot, and 23 highway. I am so glad you got that fixed.

If you have two, only one will affect gas mileage. The one before the cat.
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Old 04-16-2005, 11:15 AM   #4
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ok thank you
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Old 04-16-2005, 01:11 PM   #5
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How long was it like that? Running that rich is BAD news for the Cat.
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Old 04-16-2005, 02:29 PM   #6
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Quote:
Originally Posted by jwikoff99
You thought 12 was normal for hard driving? Man I get like 17 city with a heavy foot, and 23 highway. I am so glad you got that fixed.

If you have two, only one will affect gas mileage. The one before the cat.
95 Only has one O2 sensor.....
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Old 04-16-2005, 02:46 PM   #7
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Quote:
Originally Posted by willwren
How long was it like that? Running that rich is BAD news for the Cat.
since i bought the car... prolly the original one... you shoulda seen it..wow

cat will be replaced.. no worries there...but has anyone noticed how much cash im dropping on this freaking car!!
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Old 04-16-2005, 02:55 PM   #8
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Quote:
Originally Posted by harofreak00
Quote:
Originally Posted by willwren
How long was it like that? Running that rich is BAD news for the Cat.
since i bought the car... prolly the original one... you shoulda seen it..wow

cat will be replaced.. no worries there...but has anyone noticed how much cash im dropping on this freaking car!!
Don't even go there.......LOL
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Old 04-16-2005, 04:25 PM   #9
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But that'* all cash that you won't have to drop for a very long time again, and your fuel savings will pay it back over time.
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Old 04-16-2005, 04:46 PM   #10
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This just in, 24 mpg.
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