Need help with horrible gas mileage!
Thread Starter
Joined: Jan 2002
Posts: 3,950
From: Brooklyn, NY
Re: Need help with horrible gas mileage!
Originally posted by slammed95
Over the last 6 months I have been getting less and less miles per tank. Exact same driving style and trips. The only mod I've added since was a budget y-pipe in january.
I used to consistently get between 340-380 miles per tank, or roughly 22mpg. Then I noticed my gas mileage started to go down a little every few weeks, and I was getting like 300 or even 280 miles per tank. I had the car checked out and everything was fine except for an O2 sensor which made the CEL come on and it was replaced.
When I filled up the tank yesterday with the usual 15.5 gallons of 91 octane, I only had 227 miles on the last tank! That comes out to like 14.6 mpg!WTF! This is very frustrating and expensive.
I removed my cone filter and reinstalled the stock intake box with a new paper element and I got back a lot of low end torque, and hopefully it might help with mileage.
Anyone have any idea on what could be wrong with my engine? The CEL hasn't come on and I have had a few tuneups and the mechanic says everything seems to be fine. I have done checks of the o2 sensors, knock sensor, intake temp sensor, maf sensor as instruced by the chilton manual. Any help would greatly appreciated. Thanks
Over the last 6 months I have been getting less and less miles per tank. Exact same driving style and trips. The only mod I've added since was a budget y-pipe in january.
I used to consistently get between 340-380 miles per tank, or roughly 22mpg. Then I noticed my gas mileage started to go down a little every few weeks, and I was getting like 300 or even 280 miles per tank. I had the car checked out and everything was fine except for an O2 sensor which made the CEL come on and it was replaced.
When I filled up the tank yesterday with the usual 15.5 gallons of 91 octane, I only had 227 miles on the last tank! That comes out to like 14.6 mpg!WTF! This is very frustrating and expensive.
I removed my cone filter and reinstalled the stock intake box with a new paper element and I got back a lot of low end torque, and hopefully it might help with mileage.
Anyone have any idea on what could be wrong with my engine? The CEL hasn't come on and I have had a few tuneups and the mechanic says everything seems to be fine. I have done checks of the o2 sensors, knock sensor, intake temp sensor, maf sensor as instruced by the chilton manual. Any help would greatly appreciated. Thanks
AIR FILTER?
Senior Member
Joined: Jan 2002
Posts: 8,653
someone is stealing your gas! - lol j/p ......try using 93 octane and ease up on the accelerator.........also its gettin warmer and more and more people are driving around----> more traffic-----> more stoping and going .....etc - could be that
Senior Member
Joined: Dec 2001
Posts: 814
Originally posted by slammed95
I found a 95 gxe 5 speed for 5k with 100k miles, and I'm seriously contemplating replacing my auto 95 gxe because of this problem.
I found a 95 gxe 5 speed for 5k with 100k miles, and I'm seriously contemplating replacing my auto 95 gxe because of this problem.
where do you buy gas from
Its got to be those Mongrels who work for OPEC.
i had problems with this once, then i went crawling back to chevron and he redeemed me with my usual 400 miles on a tank.
DONT GO TO RACETRACK. stay away from those kinds of places.
i had problems with this once, then i went crawling back to chevron and he redeemed me with my usual 400 miles on a tank.
DONT GO TO RACETRACK. stay away from those kinds of places.
Check your tire pressure, alignment, and fuel filter. I had my tranny replaced a while back and Nissan didn't tighten the fuel filter line they disconnected when they were done. It would only leak when I really got on the gas, but it still sapped my milage. I also just got an alignment and that added about 25 miles per tank. Low tire pressure will suck it down too. Good luck.
Senior Member
Joined: Sep 2000
Posts: 149
Do you have stock or aftermarket rims? I just got some 17"
and I have started to notice less mpg also. I kind of chalked it up to the new rims and tires because they were a little taller than the stocks I took off. I don't know, it is terribly concerning though.
and I have started to notice less mpg also. I kind of chalked it up to the new rims and tires because they were a little taller than the stocks I took off. I don't know, it is terribly concerning though.
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