how many problems are associated w/ bad fuel econ? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-01-2004, 02:53 AM   #1
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Default how many problems are associated w/ bad fuel econ?

I know a fuel filter/pump and the o2 sensor are just a few, my car is gettin TERRIBLE gas milage, sometimes I find myself at the gas station 2wce a day! I need to know what parts I will need to fix this immediately! it'* become'n too expensive.
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Old 01-01-2004, 03:25 AM   #2
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It'* gotta be a leak, have you checked the mileage?

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Old 01-01-2004, 04:10 AM   #3
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The filter and pump won't affect your fuel mileage. They can't make you run rich, or 'waste' fuel.

O2 sensor, or an ignition problem. (ICM, coils, wires, plugs). You may also have very poor compression.
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Old 01-01-2004, 06:02 AM   #4
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twice a day :o OUCH!! As in filling from empty to full??
I thought once a week sucked!!!
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Old 01-01-2004, 02:47 PM   #5
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Assuming you don't have any trouble codes, I would start with the oxygen sensor. Does your exhaust stink like unburned fuel?
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Old 01-01-2004, 03:40 PM   #6
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yup, now that U mention it, It does smell wierd.
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Old 01-01-2004, 04:01 PM   #7
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Rotten eggs? Sulphur? This is either a sign of a bad O2 or a bad cat.
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Old 01-02-2004, 12:40 AM   #8
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how much for the coverter? the o2'* nothin' it'* simple, I need to get all these things new just so I'll feel that much better I'll get the o2 replaced as fast as this weekend maybe the coverter too.

Oh, and yes it does smell like sulphur and rotton eggs and gas an.............
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Old 01-02-2004, 01:24 AM   #9
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The oxygen sensor is cheap and easier to replace than the cat. You really need a lift and some welding tools to do exhaust work.

I would start with the oxygen sensor first.
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Old 01-02-2004, 01:38 AM   #10
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Absolutely. I was just saying a Cat could make the same smell. But it can't affect your mileage unless it'* clogged. You would feel a lack of performance if that were the case.
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