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.

effieiency problems

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Old Jun 21, 2005 | 12:09 PM
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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 Jun 21, 2005 | 12:37 PM
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whats your driving habits like?
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Old Jun 21, 2005 | 01:59 PM
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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 Jun 21, 2005 | 02:02 PM
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It could be the recent mods. Could be bad gas. Could be almost anything.....
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Old Jun 21, 2005 | 02:12 PM
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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 Jun 21, 2005 | 02:14 PM
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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 Jun 21, 2005 | 02:32 PM
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Originally Posted by BillBost37
I'd consider where you picked up the fuel. Sometimes a place with get a bad batch or two.
possible


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 Jun 21, 2005 | 02:33 PM
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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 Jun 21, 2005 | 02:35 PM
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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 Jun 21, 2005 | 07:13 PM
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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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