Wasting gas!

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Jan 16, 2011 | 03:42 PM

Tr777

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From: Tx

Wasting gas!

Ok guys so my sc300 is wasting a lot of gas. I dont know the average mpg but I'm only getting around 250 to 300 miles from my tank. What is an inexpensive thing I can do to get better gas mileage? Or something that isn't so pricy?

Jan 16, 2011 | 04:12 PM

jadu

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From: CALI

40psi on tires all around and in can of seafoam.. see if that helps

Jan 16, 2011 | 04:28 PM

CrimsonSC3

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From: FL

how many miles do you have? you could have a bad O2 sensor... if one or both goes bad you will waste a ton of fuel... i had the same thing happen on my supra... i had a bad O2 sensor and was only getting 200 MPT when i would usually get around 300 MPT

Last edited by CrimsonSC3; Jan 16, 2011 at 04:34 PM.

Jan 16, 2011 | 04:37 PM

Bender25

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From: Ca

Try changing the dizzy cap and rotor, I went from getting 240-260 miles per tank to about 350 miles per tank after changing those. Plus they only cost about $20 for both from autozone

Jan 16, 2011 | 05:13 PM

Kira X

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From: 東京都

I get pretty bad mileage too. My car gets about 15-16 MPG on the highway and in town. Will a Check Engine Light come on if you have a bad O2 Sensor?

Jan 16, 2011 | 05:17 PM

ScBouncE

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From: NJ

Ive been having this same problem. I would be lucky if i got 280 per tank. Idk if its because i have an exhaust leak or what or if i need a tune up or something. maybe new spark plugs??

Jan 16, 2011 | 06:40 PM

CrimsonSC3

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From: FL

Quote:

Originally Posted by Kira X

I get pretty bad mileage too. My car gets about 15-16 MPG on the highway and in town. Will a Check Engine Light come on if you have a bad O2 Sensor?

you would think that yes if the O2 sensor is bad the check engine light would come on but ive seen it several times where the check engien light does not come on and the sensor was still bad

EDIT: also im in the 375-400 or better MPT range on my SC300

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Jan 16, 2011 | 08:24 PM

SC510

Intermediate

Joined: Jan 2009

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From: Bay Area, CA

Quote:

Originally Posted by SEXC

Fast take-offs, hard stops and turning too fast will also affect your gas mileage.

it's hard not to do that though. lol. but my car has had bad mileage when i got it.

but i figure it's due for a tune up. changing spark plugs, hoorah!!! (no not really)

Jan 16, 2011 | 08:53 PM

#10

dreamsc300

Driver

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From: wa

i'm only getting 265 mpt and at seventeen i was forced to put my car on cl today because i just can't afford to drive it anymore

Jan 17, 2011 | 09:39 PM

#11

Tr777

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From: Tx

Wasting gas

I changed one o2 sensor and it was on the exhaust manifold for cylinders 1-3. I haven't changed the other ones. Could that be the problem and the check engine light did come for that one. Should I change the 02 sensor for 4-6 on the exhaust manifold or the rest of them on the car? Oh and the car has 192,800 miles.

Last edited by Tr777; Jan 18, 2011 at 05:40 AM.

Jan 18, 2011 | 09:01 AM

#12

Tr777

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From: Tx

Quote:

Originally Posted by Bender25

Try changing the dizzy cap and rotor, I went from getting 240-260 miles per tank to about 350 miles per tank after changing those. Plus they only cost about $20 for both from autozone

What is that and where are they located?

Jan 18, 2011 | 03:28 PM

#13

CrimsonSC3

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From: FL

Quote:

Originally Posted by Tr777

What is that and where are they located?

lol yeah he didnt really do that one well huh... distributor cap (dizzy) and rotor... thats where all your spark plug wires plug into... if your looking at your motor its sitting on the left side of the motor.