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Old 03-23-2008, 12:25 PM   #1
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Default mpg (UPDATE: still low :(

well filled up today to check the numbers again after the spark plug/wire switch, i now get 16.5 miles/gallon. what is the next area to check?
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Old 03-23-2008, 12:26 PM   #2
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How do you drive and is it freezing there, is it all city or all highway or mixed?
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Old 03-23-2008, 12:30 PM   #3
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i drive normal, no WOT and whatnot.

temperature has been 30-50*F.

mostly highway.
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Old 03-23-2008, 12:43 PM   #4
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For those conditions, you're about 10mpg low, even with winter blend.

You should be able to pull 28-32 highway on long trips. 25 is reasonable for 'mostly highway' driving.
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Old 03-23-2008, 12:54 PM   #5
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something is definitely off. i get 18-19 almost all city.
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Old 03-23-2008, 01:08 PM   #6
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I get about 24-25 with city/highway mixed driving in the winter. The same route in the summer gets about 28. I have been thinking mine was a little low. You are definitely extremely low. I am no expert but I would check plugs/wires/O2 sensor.
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Old 03-23-2008, 01:23 PM   #7
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Those are the first thing on the hit list.

How old are your plugs, wires, and O2, and what brand are they?
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Old 03-23-2008, 03:08 PM   #8
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everything i would imagine is original, i will get out and check later tonight, working on the kitchen tile currently.

EDIT: where is my O2 located?
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Old 03-23-2008, 04:28 PM   #9
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The O2 you're lookin for is on top of the rear exhaust manifold.
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Old 03-23-2008, 05:06 PM   #10
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Quote:
Originally Posted by gonzo4191
everything i would imagine is original, i will get out and check later tonight, working on the kitchen tile currently.

EDIT: where is my O2 located?
This is on a 97, but should be close to the same. It'* right in the center of the picture, the silver thing sticking out of the red manifold. This is the rear one near the firewall.

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