deeweezygs

iTrader: (4)

ok CL i did some searching and couldnt find answers only debates lol
i have a 99 gs300 with stock motor
im gettin right about 15mpg which is problem 1.....i know thats bad for a 3.0l sedan
problem number 2....fuel light comes on and i run out of gas way too soon....like right under 1/4 tank
that happened beginning of the year though....i fill up before i get to 1/4
i put 15gallons last time and only had 221 miles
main concern is the milage
2nd concern is why gauge is acting like that
i remember readin long time ago about it not being the fuel pump but its a secondary jet or pump in the fuel line....but cant find that same thread again

thanks in advance

abounly

iTrader: (27)

1. GS don't get that good of mpg. Could be better by your driving style.
2. The light suppose to come on around 1/4 to warn you. You can drive an extra 30-40miles before you need to fill.

I have a 430 and i'm getting 18.6 mpg with a light foot.

USMCLexus

I'm getting around 22-23 mpg combined, city and highway. I wonder if the car is screaming for a tune-up?

SBMGS300

lucky you man, i'm getting anywhere between 16-18 mpg in a 2000 gs300 stock with 186k. any advice on how to get the mpg more towards your range? aside from usual tune up tips and having a light foot?

deeweezygs

iTrader: (4)

wow thats what im trying to say....15mpg is not RIGHT....idc who says GS dont get good milage.....i would expect about 19-20.....not 15!
yea what advice do you have?
lite foot i get same milage.....i barely get on it actually=/

af1c331

iTrader: (2)

I was easily getting around 21-23 MPG in my stock GS for the longest time (mileage between 150K-190K), however!!! Now i get around 15-16, WTF?

chicov8

im getting about 13-15mpg city driving in 430 (short trips) and 25-28mpg highway
im gona clean maf, TB, seafom, change spark plugs and fuel filter and see if it helps

deeweezygs

iTrader: (4)

wow please keep us posted on results chicov8

af1c331 exactly my point....its just not normal and gotta be a way to fix this but seems normal tune up doesnt do it.....your fuel gauge off as well?....mine runs out of gas before it gets to E....id guess a lil under a 1/4 tank

MikeFoxx

iTrader: (8)

Dee... When did u have a tune up and what did that consist of? Cause honestly thats the first thing i'd do. How u drive is a factor but what ur driving is the biggest. Cant run a mile under 6 minutes with beer and hot links if u know what im saying. **** has to breathe right... The car has lungs bro urs seems lower than normal to say the least.

Thats like drivin a lifted truck chipped

clos430

iTrader: (21)

What kind of driving do you do ? City/hwy ? I do half n half and I'm getting 20 + mpg on my 430. I know I read somewhere on here about gas gauges not reading right, I think it had to do with people replacing the fuel pumps and some how messing up the hanger assemblies can't exactly remember

neegroy

iTrader: (19)

right before i got in the office, i just checked to see the mpg lol im getting an astonishing 11.3!****!!!


YAY!!!

4.3 v8 hence i dont expect much "fuel economy" anyway lol.

BLK13X

01 GS3 w/ around 134k here, driven on the weekends mainly and sometimes during the week.

I usually cover around 500~550km on one tank (level to bottom of gauge), so about 11L/100km or 21~22mpg in your speak

GS4_Fiend

iTrader: (22)

I get 19-22 mpg on my gs430. 60% highway

vwynn

iTrader: (4)

~20 is the normal combined mpg if you drive freeway a lot. thats what i get boosting it here n there.

check your gas tank floater n see if its still good maybe?

whytry

iTrader: (1)

Any updates on this?

I have a whole thread dedicated to this same problem!! All of the sudden my MPG is down a little more than 10%....

https://www.clublexus.com/forums/gs-...-pls-help.html