Only getting 200 Miles on a full tank, wtf?
#1
10-06-2010, 11:03 AM
Only getting 200 Miles on a full tank, wtf?
I own a 2004 g35 coupe, 5AT. Complete stock car, no mods at all yet, and all tires are 30 psi. It has 98,000 miles on it. I use 93 octane gas( BP Ultimate with that invigorate stuff ). My gas milage is terrible, around 10 MPG. What can i do to check/fix my MPG?
p.s. it costs 45 bucks a week to fill her up and I dont drive hard at all :|
p.s. it costs 45 bucks a week to fill her up and I dont drive hard at all :|
Last edited by Smitty50; 10-06-2010 at 11:08 AM.
#2
10-06-2010, 11:16 AM
#3
10-06-2010, 11:21 AM
#5
10-06-2010, 11:44 AM
#7
10-06-2010, 04:05 PM
30 PSI? That's a little low.... although that's certainly not going to be the sole contributing factor to you getting such extremely bad gas mileage as you are.
The recommended pressure is 35 PSI.
Is your Check Engine Light on?
Give us some info about the cars history..... did you buy it new? How long has it been having such poor fuel economy?
I've seen situations in the past where a person buys a car from a shady used car dealer, and the car had a problem that was causing the Check Engine Light to be on, and the dealer would just smash the bulb in the dashboard for the Check Engine Light, so a buyer wouldn't know there was a problem with the car. That actually happened to my dad when he bought some old piece-o-junk used GMC Sonoma a few years ago.
The recommended pressure is 35 PSI.
Is your Check Engine Light on?
Give us some info about the cars history..... did you buy it new? How long has it been having such poor fuel economy?
I've seen situations in the past where a person buys a car from a shady used car dealer, and the car had a problem that was causing the Check Engine Light to be on, and the dealer would just smash the bulb in the dashboard for the Check Engine Light, so a buyer wouldn't know there was a problem with the car. That actually happened to my dad when he bought some old piece-o-junk used GMC Sonoma a few years ago.
Trending Topics
#10
10-06-2010, 04:46 PM
Join Date: Feb 2009
Location: Rio de Jeneiro or East Coast
Posts: 1,083
Received 96 Likes
on
70 Posts
Consider cleaning you throttle body and O2 sensor. These are largely ignored when looking at mpg and even some power gains. When cleaning the throttle body, be careful that you use a cleaner that won't damage the sensor, otherwise you can worsen a problem or create one where none existed.
With respect to the sensor, have it checked or check it yourself to see (sometimes codes won't register it as bad) if it's "switching" correctly. I believe it's a Bosch planar type (not sure, does anyone know this??), so readings could be tricky since it may use newer "wide band" technology. >50% of newer cars now use these b/c of their efficiency and effects on mpg, emissions, power, etc.
I've done everything others have suggested above, plus this and a few other things (e.g., run Sea Foam thru my vacuum line and gas tank), and average about 450 miles per tank with 40% city/60% highway in somewhat rough (potholes, bad roads, very steep inclines) terrain.
Good luck and I hope this helps
Isa
With respect to the sensor, have it checked or check it yourself to see (sometimes codes won't register it as bad) if it's "switching" correctly. I believe it's a Bosch planar type (not sure, does anyone know this??), so readings could be tricky since it may use newer "wide band" technology. >50% of newer cars now use these b/c of their efficiency and effects on mpg, emissions, power, etc.
I've done everything others have suggested above, plus this and a few other things (e.g., run Sea Foam thru my vacuum line and gas tank), and average about 450 miles per tank with 40% city/60% highway in somewhat rough (potholes, bad roads, very steep inclines) terrain.
Good luck and I hope this helps
Isa
Last edited by Infiniti Chica; 10-06-2010 at 05:05 PM.
#11
10-06-2010, 05:11 PM
I own a 2004 g35 coupe, 5AT. Complete stock car, no mods at all yet, and all tires are 30 psi. It has 98,000 miles on it. I use 93 octane gas( BP Ultimate with that invigorate stuff ). My gas milage is terrible, around 10 MPG. What can i do to check/fix my MPG?
p.s. it costs 45 bucks a week to fill her up and I dont drive hard at all :|
p.s. it costs 45 bucks a week to fill her up and I dont drive hard at all :|
i had a similar issue but it had something to due with my gas tank , dont remember what but it would say i had a full tank but it only filled up 3/4 of the way, took it to the dealership and the said that my gas guage inside the tank was off
#13
10-06-2010, 05:37 PM
Registered User
#14
10-06-2010, 08:14 PM
30 PSI? That's a little low.... although that's certainly not going to be the sole contributing factor to you getting such extremely bad gas mileage as you are.
The recommended pressure is 35 PSI.
Is your Check Engine Light on?
Give us some info about the cars history..... did you buy it new? How long has it been having such poor fuel economy?
I've seen situations in the past where a person buys a car from a shady used car dealer, and the car had a problem that was causing the Check Engine Light to be on, and the dealer would just smash the bulb in the dashboard for the Check Engine Light, so a buyer wouldn't know there was a problem with the car. That actually happened to my dad when he bought some old piece-o-junk used GMC Sonoma a few years ago.
The recommended pressure is 35 PSI.
Is your Check Engine Light on?
Give us some info about the cars history..... did you buy it new? How long has it been having such poor fuel economy?
I've seen situations in the past where a person buys a car from a shady used car dealer, and the car had a problem that was causing the Check Engine Light to be on, and the dealer would just smash the bulb in the dashboard for the Check Engine Light, so a buyer wouldn't know there was a problem with the car. That actually happened to my dad when he bought some old piece-o-junk used GMC Sonoma a few years ago.
Nope no engine lights at all, I have yet to see one yet
I just bought it over a month ago from a 1 owner old person. He babyed the hell out of it so it seems like he treated it well.
Over 2 weeks the MPG is just been terrible and being 17 my job isnt paying enough for my gas :\
Thats a scary story right there that would be the worst for me. But nothing at all. Everything is stock in the car and in tip top shape as far as im concerned.
#15
10-06-2010, 08:17 PM
Consider cleaning you throttle body and O2 sensor. These are largely ignored when looking at mpg and even some power gains. When cleaning the throttle body, be careful that you use a cleaner that won't damage the sensor, otherwise you can worsen a problem or create one where none existed.
With respect to the sensor, have it checked or check it yourself to see (sometimes codes won't register it as bad) if it's "switching" correctly. I believe it's a Bosch planar type (not sure, does anyone know this??), so readings could be tricky since it may use newer "wide band" technology. >50% of newer cars now use these b/c of their efficiency and effects on mpg, emissions, power, etc.
I've done everything others have suggested above, plus this and a few other things (e.g., run Sea Foam thru my vacuum line and gas tank), and average about 450 miles per tank with 40% city/60% highway in somewhat rough (potholes, bad roads, very steep inclines) terrain.
Good luck and I hope this helps
Isa
With respect to the sensor, have it checked or check it yourself to see (sometimes codes won't register it as bad) if it's "switching" correctly. I believe it's a Bosch planar type (not sure, does anyone know this??), so readings could be tricky since it may use newer "wide band" technology. >50% of newer cars now use these b/c of their efficiency and effects on mpg, emissions, power, etc.
I've done everything others have suggested above, plus this and a few other things (e.g., run Sea Foam thru my vacuum line and gas tank), and average about 450 miles per tank with 40% city/60% highway in somewhat rough (potholes, bad roads, very steep inclines) terrain.
Good luck and I hope this helps
Isa
My driving is basically 60% city, 40% highway. Mostly smooth roads.