Gas Mileage Concerns

[Brady]

So its me again the pre noob to the supra ranks with yet another infantile question for you gurus...

So I've gone about 200 miles on this last tank of gas and I have maybe halfway between quarter tank and empty left so ( 1/8 tank left ).

I've done some lookin around here and I read that some of you fucks are cruisin past the 400 mile mark on one tank and I know thats not jus an NA thing. What the deal?

My first thought was my o2 sensor, am I onto something?

Also some context : I've only used Premium gas since I've owned it ( 2.5 months) I have NO MODS, BONEASS STOCK, I'm not drivin crazy havent even taken it past 4k rpm yet. Any recommendations? Thanks alot

 

[aye mate]

#1 Don't call anyone here a "fuck" thats not the way to make friends and people want to help you

#2 When was the last time the car had a tune up? Airfilter, fuel filter, plugs and wires, trans oil, differential oil, oil filter and oil change. Getting a new o2 sensor from MDCmotorsports wouldn't be a bad idea either.

 

[Brady]

its a term of endearment in my book, all apologies for bein seemingly offensive

i guess ill plan on a tuneup soon

can i have a link to MDC por favor?

thanks

 

[hellraiser456]

your CEL on?

if so your engine is probably in a "safe" mode..and will dump more fuel into the engine so it doesn't run lean....or so im told as i have a downed knock sensor.

a tune up would be a good idea...its amazing how much it helps...

Is there any other strange symptoms other than gas mileage?

 

[madseacow]

boost leaks.

 

[swaq]

can i have a link to MDC por favor?

http://www.mdcmotorsports.com

 

[Brady]

Hey I dont know what a CEL is, as for other symptoms ummm

it pulls to the right (alignment issue I guess) iono

sometimes it idles hella low and rough and i have to gas it otherwise itll stall out but thats kinda intermittent

 

[Brady]

Ok by the way after browsing MDC it looks like they have 2 diff o2 sensors and both are for the 7M-GE and they exclude my beautiful homestate of Cali so I'm guessing those will not work eh?

Oxygen Sensor NGK/NTK O.E. Replacement Oxygen Sensor (Before Converter) - 3.0L 7M-GE L6 Mdls exc CALIFORNIA

Oxygen Sensor BOSCH Universal Type Oxygen Sensor (before Catalyst) - ALL non-Turbo Mdls exc CALIF.

 

[ViR2]

Just one more Q, do u have white smoke coming out of your tail pipe???

 

[Brady]

nope, freshly installed HG and resurfaced head and valve job

 

[johnathan1]

CEL=Check Engine Light

http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx

 

[ViR2]

then maybe when when instaling engine belt your mechanic missed one tooth, but then aceleration would slow as crap...

 

[mkIIIman089]

Do this and tell us what you come up with:

http://cygnusx1.net/Supra/TechTips/engine_error_codes.aspx

 

[Big Wang Bandit]

Stop whining, I get about 200 miles to a tank city/highway.

lol

 

[aye mate]

its a term of endearment in my book, all apologies for bein seemingly offensive

I was f-ing with you, you f-ing f. :lol:

I usually get around 300 miles per tank, which is right around 20mpg.

 

[s383mmber1]

:icon_bigg You know who i would have killed to get 200 to the tank?

I got 100 miles to the tank once! That was welll worth it though..... :icon_razz


Do a full basic tune up and come report back!