Not so good gas mileage?

Reply Subscribe

Thread Tools

Search this Thread

02-07-2011, 11:13 AM

#11

AdderMk2

Banned

Join Date: Dec 2005

Location: Lil' Rhody

Posts: 22,376

Quote:

Originally Posted by enix187

sounds like my car, can't get it above 18mpg on the highway and goes between 9 and 13 around town 9 being me driving the **** out of it and 13 the other extreme. O2's are next on the list when I have the currency to spare, other vehicles are draining my funds. btw, I run premium on 15-16 degrees advance, and adder i know your thoughts on octane and you don't need to recite them

drop your timing to 13 and run 87, and i bet your gas mileage goes up

02-07-2011, 11:30 AM

#12

enix187

3rd Gear Member

Join Date: Apr 2007

Location: NC

Posts: 590

thats on the list to try, the car ran like a dog with 87 at 10

02-07-2011, 02:28 PM

#13

Quickbird144

1st Gear Member

Thread Starter

Join Date: Jan 2011

Location: Orlando

Posts: 109

Glad I'm not the only one!

02-07-2011, 03:27 PM

#14

Bubba 95SN

4th Gear Member

Join Date: Apr 2009

Location: N.C.

Posts: 1,893

Have you took the time to check for codes? SBFTech will show you how.

02-07-2011, 04:13 PM

#15

Quickbird144

1st Gear Member

Thread Starter

Join Date: Jan 2011

Location: Orlando

Posts: 109

Quote:

Originally Posted by Bubba 95SN

Have you took the time to check for codes? SBFTech will show you how.

It's kind of hard to? It comes and goes. One minute it's there, the next it's gone. But It only comes and goes when the car is warmed up. Cold it runs like a champ/

02-08-2011, 07:57 AM

#16

SnakeBite95

Join Date: Feb 2011

Location: PA

Posts: 1

Quote:

Originally Posted by Quickbird144

It's kind of hard to? It comes and goes. One minute it's there, the next it's gone. But It only comes and goes when the car is warmed up. Cold it runs like a champ/

Usually intermittent codes like this means 02 sensors.

02-08-2011, 09:41 AM

#17

Dj_Seph

4th Gear Member

Join Date: Jul 2009

Location: Arizona

Posts: 1,127

Quote:

Originally Posted by AdderMk2

yea, I think you are. I get that kind of mileage with my 347.

I was getting about the same as everett when my car had the stock engine in it.

Do you have 4.10s?

02-08-2011, 09:48 AM

#18

AdderMk2

Banned

Join Date: Dec 2005

Location: Lil' Rhody

Posts: 22,376

Quote:

Originally Posted by Dj_Seph

Do you have 4.10s?

3.73's

02-08-2011, 11:16 AM

#19

Bubba 95SN

4th Gear Member

Join Date: Apr 2009

Location: N.C.

Posts: 1,893

Codes may well be in the memory. Go to SBFTech and READ! Can't make this any more clear. The knowledge you are missing is contained in there. CEL does not have to be lit to mean you have a problem. Tests are the way to keep from spending money for useless parts.