Gas milage question..

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May 28, 2002 | 02:04 PM

MarkLT1

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From: More cowbell...

St. Jude Donor '04

Gas milage question..

Last summer I had my water pump replaced.. Noticed a good increase in gas milage after the replacement: I was up around 26-28mpg on the highway.. Now, however, I am back down to around 18-22mpg.. does this sound low for an LT1 auto, with 3.07 gears?? What might be the culprit??

May 28, 2002 | 02:08 PM

Bravery

Pro

Joined: Apr 2002

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From: Alexandria VA

Re: Gas milage question.. (MarkLT1)

I see 28-30 on the highway and have the same car basically (95 auto 307).

Mike

May 28, 2002 | 03:18 PM

VQT88Vette

Melting Slicks

Joined: Jun 2000

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From: Las Vegas NV

Re: Gas milage question.. (MarkLT1)

Mark,

When my car was running I got about 19-21 mpg to and from work. You know the traffic on Route 1, NJ already. On strictly highway run averaging between 65-70 mph, I got ~24-26 mpg. This was real calculation of mileage and gallons used after each fill up.

I got a L98 with 3.07 rear also.

[Modified by VQT88Vette, 2:21 PM 5/28/2002]

May 28, 2002 | 07:31 PM

MarkLT1

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From: More cowbell...

St. Jude Donor '04

Re: Gas milage question.. (VQT88Vette)

Thanks guys... looks like something is robbing my gas milage.. I'll have to look into it.

May 28, 2002 | 07:39 PM

Drewdog

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From: Cleveland

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Re: Gas milage question.. (MarkLT1)

I replaced my fuel filter and my idle improved and I think mpg did a little, not positive tho.

May 29, 2002 | 12:21 AM

vader86

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From: Athens AL

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Re: Gas milage question.. (Drewdog)

O2 sensor could do it, faulty injectors too

May 29, 2002 | 01:38 PM

PTz-92-LT1

Racer

Joined: Apr 2002

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From: Micco FL

Re: Gas milage question.. (MarkLT1)

Manual trans will out perform auto. On my 92 LT1 auto, overall average is 20-22. Highway only is generally 24-28 depending how close to 100 I get for how long! City driving can be terrible, particularily if there are a lot of those peski 5.0's around. Have averaged 3-7 in the light to light setting.