effieiency problems - 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 06-21-2005, 01:09 PM   #1
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Default effieiency problems

I need some ideas on what to replace. I just ordered an O2 sensor and a new CAT is on the way also.

I took a trip yesterday over to the shore yesterday, so the tank was use for 1/4 city, 3/4 highway. I got 17.somthing mpg. AHH...I noramally will get 18ish CITY and 25ish highway. Although the tank before this one I got 16something city.

What has gone bad. I just cleaned the K&N before the road trip (gutted the air box too).

any ideas on why my gas mileage is so bad?
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Old 06-21-2005, 01:37 PM   #2
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whats your driving habits like?
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Old 06-21-2005, 02:59 PM   #3
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those two tanks my driving was "nicer" than normal because I had passengers. And even when I am alone and drive the **** out of the car I have never seen it bad.
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Old 06-21-2005, 03:02 PM   #4
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It could be the recent mods. Could be bad gas. Could be almost anything.....
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Old 06-21-2005, 03:12 PM   #5
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hmmm..I guess I will have to see how everything pans out after my new O2 sensor and CAT get here and are installed.
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Old 06-21-2005, 03:14 PM   #6
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I'd consider where you picked up the fuel. Sometimes a place with get a bad batch or two.

A quick bit of humor: Guys...he'* got an SE..how bad could his driving habits be?
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Old 06-21-2005, 03:32 PM   #7
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Quote:
Originally Posted by BillBost37
I'd consider where you picked up the fuel. Sometimes a place with get a bad batch or two.
possible


Quote:
Originally Posted by BillBost37
A quick bit of humor: Guys...he'* got an SE..how bad could his driving habits be?

a$$...
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Old 06-21-2005, 03:33 PM   #8
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Quote:
Originally Posted by BillBost37
I'd consider where you picked up the fuel. Sometimes a place with get a bad batch or two.

A quick bit of humor: Guys...he'* got an SE..how bad could his driving habits be?
Shaddap you!!!

STOP THE SUPERCHARGER OPPRESSION!!
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Old 06-21-2005, 03:35 PM   #9
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I've said it before and I'll say it again. The only thing that whines louder than our SUPERCHARGERS are the people that don't have them.

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Old 06-21-2005, 08:13 PM   #10
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Quote:
Originally Posted by BillBost37
I've said it before and I'll say it again. The only thing that whines louder than our SUPERCHARGERS are the people that don't have them.


ouch BURN!!!!!!!!!!
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