Lead foot= 15mpg?

[redbird555]

Im getting about 15 mpg in the city. Now as the title suggested I tend to have a lead foot not that I speed but I get up there very quickly mayb losing a bit of tire tread on the way there. Not only that but if i pass somebody its usually dug deep in the throttle. If I go on the highway and put cruise control I get bout 25 mpg doing 75 with an auto and 3.42's. The car has the cat removed and I cant find the harness for the ear o2 sensor on the pass side anyone know where the harness is? But anyway the other 3 are hooked up. Everything seems to be burning normal. my question was is 15 about normal for someone with a lead foot purely city driving. Will that o2 sensormake a HUGEdifference. Thanks Dan

[jabberman]

Re: Lead foot= 15mpg?

What year is your AuToMoBiLe...

[Mr. Logger]

Re: Lead foot= 15mpg?

If it is a rear O2 sensor, it does nothing for performance. Just monitors the cat. Not sure about the mileage ( i guess it sounds right), as I know there is no reason to get in a hurry and mash the gas all the time.

[96firebird311]

Re: Lead foot= 15mpg?

Sounds normal to me. Lead in your feet is the #1 killer to gas mileage...... by far.

[rhouse21]

Re: Lead foot= 15mpg?

if you've got an 02 sensor missing, I wouldn't be surprised if your vehicle was stuck in open-loop mode. It would run in this mode (all of our do every day before they warm up, but the engine would not optimize your fuel/air mixture for best economy and power. You may not be able to figure our what's really going on without plugging up a scan tool and seeing what's on your car's mind.

[RadRacer]

Re: Lead foot= 15mpg?

if you've got an 02 sensor missing, I wouldn't be surprised if your vehicle was stuck in open-loop mode. It would run in this mode (all of our do every day before they warm up, but the engine would not optimize your fuel/air mixture for best economy and power. You may not be able to figure our what's really going on without plugging up a scan tool and seeing what's on your car's mind.

As mentioned before, the rear O2s have no effect on gas mileage; they monitor the cat's efficiency. It won't keep the car in open loop. I too have a lead foot and am getting 20MPG 50/50 city highway. When was the last time you changed plugs, O2's, oil, etc? It may be time to get a tune up.

[ViperRider]

Re: Lead foot= 15mpg?

I don't have a lead foot at all and I get **** for mileage :(

[Smoke Panther]

Re: Lead foot= 15mpg?

my question was is 15 about normal for someone with a lead foot purely city driving.

most definately.

[nascar24jd]

Re: Lead foot= 15mpg?

I changed my O2s and I still get 15mpg. :rant:

[cam98aro]

Re: Lead foot= 15mpg?

i get 20mpg with i guess you could say "country" driving, or a 50/50 mix.. this is driving the car nice and smooth , 15 is just about on par with me if i were to beat the crap out of my car

[loser]

Re: Lead foot= 15mpg?

i get almost 400 miles to a tank and i row through the gears and bark 2cd gear every now and then.

[rhouse21]

Re: Lead foot= 15mpg?

This is taken from Random Technology's website (a major catalytic converter maker).

Virtually all electronic engine control systems automatically adjust fuel flow to precisely maintain the chemically ideal air/fuel ratio of 14.7:1. However, automatic fuel adjustment only occurs during part throttle operation. Major exhaust system modifications-- such as removal of catalytic converters-- often requires reprogramming of the engine control computer to reestablish optimum air/fuel ratios at wide open throttle.

If you spend a lot of time 'enjoying your car' and have never had any computer tuning, this could explain your mileage.

See the whole article at http://www.randomtechnology.com/technical.html

[whitdog54]

Re: Lead foot= 15mpg?

^^ sounds about right with me, not gonna spend money on tuning with just exhaust and intake work though.

[00delbz]

Re: Lead foot= 15mpg?

Im getting about 15 mpg in the city. Now as the title suggested I tend to have a lead foot not that I speed but I get up there very quickly mayb losing a bit of tire tread on the way there. Not only that but if i pass somebody its usually dug deep in the throttle. If I go on the highway and put cruise control I get bout 25 mpg doing 75 with an auto and 3.42's. The car has the cat removed and I cant find the harness for the ear o2 sensor on the pass side anyone know where the harness is? But anyway the other 3 are hooked up. Everything seems to be burning normal. my question was is 15 about normal for someone with a lead foot purely city driving. Will that o2 sensormake a HUGEdifference. Thanks Dan

personally yeah it would, didnt it throw a code??? get a dummy o2 sensor it worked for me.

[redbird555]

Re: Lead foot= 15mpg?

Ive got one in there I finally jacked up the car and poked around for the harness the guy before me installed it. You see when I bought the car it was ready for a turbo the pulmbing was all done the only thing I had to do was find a turbo and brackets. Unfortunetly I didnt have 2 grand. The car runs fine so I dont think the pcm was redone for the turbo however I have been driving nicer and its about 15 mpg mayb a tad more. however I also live in south florida ft. lauderdale to be exact and theres barely a .5 mile between traffic lights. Usually less...