HELP! getting only 265 miles on full tank

Reply Subscribe

Thread Tools

Search this Thread

10-04-2011, 07:41 PM

#41

Mac.World

Junior Member

Join Date: Oct 2011

Location: Central Cali

Posts: 49

Long time listener, first time caller... Just bought my 98 SE and it appears to be getting approx 22mpg. Needs a lot of TLC though. First post. More to follow.

10-04-2011, 09:25 PM

#42

01max5spd

Junior Member

Thread Starter

Join Date: Dec 2010

Location: philly

Posts: 81

Calculated my mpg recently and i get about 17.5 mpg, 95% city driving with a lot of stop and go... Still really bad compared to most of you guys..

10-06-2011, 10:30 PM

#43

TravisCadello

Senior Member

Join Date: Oct 2009

Posts: 1,432

mines in perfect health condition everything is new and i get 16MPG i got 260 out my last full tank of regular gas but im moving heavy 20 inch rims and a heavy foot.

12-07-2011, 06:09 PM

#44

Jac Abyssal

Newbie - Just Registered

Join Date: Aug 2011

Location: Texas

Posts: 2

I have a 95 auto (bought it 4 months ago) and when I first got the car I was getting 27 mpg for mostly hwy driving. This last tank I only had 19 mpg, 90 percent of that was hwy. The things I have replaced since buying the car, knock sensor, coil on cylinder 2, new plugs, pcv valve, fuel filter and air filter. The cel works and is off while running. While in gear at red lights every once in a while it will seems like the engine hiccups (happens maybe once a min or less). I have checked for vacuum leaks and I have found none. Idle seems to be normal ( about 800-900 rpm). Tires are in good shape and I check them every couple of days. . The car drives fine but it is using to much fuel. The only things I have been able to think of is that the cat is clogged, the MAF is not reading right.

12-08-2011, 02:42 AM

#45

Leo_Koneval

Senior Member

iTrader: (4)

Join Date: Jan 2009

Location: Everett, Washington

Posts: 1,804

Wow you guys get that high of a MPG!? I've been getting 220-230 miles a tank. I assumed it was because of colder weather but I guess its time to check for codes.

Probably the knock sensor...........................................

12-08-2011, 06:32 AM

#46

Wizxon

Junior Member

Join Date: Sep 2011

Posts: 70

Quote:

Originally Posted by Leo_Koneval

I get around what your getting too on my 97 4th Gen GLE.

But I need to replace spark plugs, and I get a code for EGR valve, and a knock sensor as well.

12-17-2011, 11:44 AM

#47

Jac Abyssal

Newbie - Just Registered

Join Date: Aug 2011

Location: Texas

Posts: 2

Well I think I have found part of the issue. It seems that I may have a cat that is getting clogged up. One other issue I found is that the gas cap wasn't holding a very good seal so I replaced that. I will most likely delete the cat and wire in a resistor for the o2 sensor just so that I do not have an engine light.

12-28-2011, 09:14 AM

#48

53jimc

Junior Member

Join Date: Nov 2010

Posts: 22

Quote:

Originally Posted by armatis

1. Fill up your tank, write down mileage.
2. Drive your car, and when it gets low, fill it up again, write down both how many gallons you put in, and write down mileage again.
3. Subtract old mileage from new mileage.
3. Divide number of miles driven by number of gallons you put in to fill it up.

(miles/gallons=mpg)

*One other little piece of advice, fill it up the same way every time. I always just let it "click" off and don't top it off. Consistency helps accuracy.