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fuel mileage

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mikebough
New User

Dec 12, 2010, 4:04 PM

Post #1 of 3 (1485 views)
fuel mileage Sign In
I have a 98 chevy silerado 4 wheel drive with a 5.7 litre engine. The engine has been recently rebuilt using all gm parts with all new wires and hoses and a new distributer.I changed both catalytic converters and two of the 4 o2 sensors because they showed up as a fault on the computer.
the other 2 sensors don't show a fault but i'm only getting 12 mpg. Could these two be sending a high voltage but not high enough to creat a fault and this is telling the computer to enrich the fuel?

Thanks
Mike


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 12, 2010, 4:17 PM

Post #2 of 3 (1479 views)
Re: fuel mileage Sign In
I don't know what your expecting...........

That is right on the EPA rated mileage for that vehicle

1998 Chevrolet C1500 Pickup 2WD




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Dec 12, 2010, 4:18 PM)


Sidom
Veteran / Moderator
Sidom profile image

Dec 12, 2010, 6:44 PM

Post #3 of 3 (1473 views)
Re: fuel mileage Sign In
Were you getting something different before?

You know what one of the biggest and most overlooked factors in fuel economy is? Tire inflation.

If you have a small car, drop the pressure to 15psi & push it a ways. Then air the tires up to the correct specs for the car and push it. It will be obvious what low inflation does to MPG..

Correct wheel alignment helps as well, even tread pattern will make a difference...


(This post was edited by Sidom on Dec 12, 2010, 6:45 PM)





 
 
 






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