Fuel Question

[cadgear]

Do any of you other late Lumina drivers get horrible mileage? Such as in the under 10MPG highway driving.

I ask because ever since I got my 99 Lumina, I noticed that my guage can go from F to E in way under two hundred miles. However, I've been driving on E in city traffic for the past 45 or so miles...think my sending unit is bad? I do. But its a four hundred dollar part from GM, which means its two hundred from NAPA which means its four hundred to have it installed


Any other tips on this?

[SlamminMOfo]

gas mileage bites... There is a new fuel pump, fuel filter, plugs, wires. next I may try the O2 sensor for better mpg.

[(99luminaLS)]

i have the same problem with my 99 lumina i only put around 165 miles on a full tank of gas, which is very sad

[jeffcoslacker]

Wow! You guys got something wrong!(duh)

I get high 20's on the highway, and probably about 18-20 on the street.

I think you are on the right track. O2 sensors and hogged air filters are known fuel mileage culprits.

I highly recommend the K+N panel filter. Doesn't cost much when you consider it is the last air filter you're gonna buy for it, and give a noticeable performance and mileage boost.

[jeffcoslacker]

I think it is just a GM trait to have wierd fuel gauges. Every one I've ever had, when it shows half a tank, you can put in a few gallons and show full, but actually have to put in over half the capacity to top it off. And I'll run for days with the needle sitting on empty. I don't get scared until the needle starts bouncing. Then it's time to get some gas, or walk.