280zxt mpg

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06-10-2002, 09:53 AM

mck2

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280zxt mpg

I topped up the fuel, drove 25 miles on the freeway at 3500 rpm. Returned the same way. Averaged 13 mpg. What's wrong? Sensor?

06-10-2002, 09:54 AM

mck2

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Re: 280zxt mpg

Forgot to mention the plugs look like it is running rich. I use the car on tracks at 5000 rpm so I dont want to go too lean.

06-10-2002, 09:36 PM

lifegrddude

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Join Date: Oct 2001

Location: San Diego

Posts: 1,220

Re: 280zxt mpg

What kind of tranny are you using? My car is averaging around 17-19 miles per gallon. If I floor it around town then it goes to 15. It's a 3spd auto.
82ZXT

06-17-2002, 03:30 PM

ScottOmatic

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Re: 280zxt mpg

You may have a faulty fuel chip, The previous owner of my car
had his go defective and was running full rich all the time. Those cost some serious money to replace too.

Z U L8R

06-18-2002, 03:29 AM

tickwon

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Re: 280zxt mpg

It might be an O2 sensor. Find out the last time you changed that...changing that would impove gas mileage.

Chris
1981 280ZXT

Chef Tickwon
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