Why does my jimmy **** so much?

[Fear Of Theive 10+ year member]

f150=13mpg....

 

[Captain_Ahab 5,000+ posts]

My '95 Blazer has the 4.3 V6 Vortec and it sucks at gas also. I think I average 19mph on the highway. One time I filled completely up and actually ran it out of gas. Averaged 17.6 with normal driving (city and highway).

 

[Max_Power 10+ year member]

thats pretty good mileage in your jimmy //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Jmac 10+ year member]

didn't mythbusters test that and found there was no difference at all?

Fail ...
Mythbusters did HIGHWAY driving. City driving involves much lower speeds, which means aerodynamics will not play as large of a factor, and idling for long periods of time.

There are many other factors such as your car's aerodynamic properties (height, width, drag co-efficient, etc.), the speed you're travelling at, and the amount of power your air conditioner uses (dependent on AC setting, size, efficiency, maintenance, etc.)

Believe it or not, Mythbusters is not always as cut and dry as they make it out to be.

 

[Scoobydoo 5,000+ posts]

pretty sure it isnt a federal crime to mess with your cars exhaust system

she is in canada anyway

 

[Trez0r 10+ year member]

pretty sure it isnt a federal crime to mess with your cars exhaust system
she is in canada anyway

ha..

***:

 

[VinnyG 10+ year member]

im not the one who punched it out we actually had to take it to my friend who runs an auto shop and he told us

 

[IgnoreMe 5,000+ posts]

pretty sure it isnt a federal crime to mess with your cars exhaust system
she is in canada anyway

it sure is a federal crime. messing with a cat is a BIG no no.

mechanics cant even do it without proper documentation.

 

[Jmac 10+ year member]

Usually I turn my vehicle off but than at times when im picking someone up or whatever it may be I leave it on, but, isn't it true that when you turn your vehicle off and start it your actually wasting more gas than saving by turning it on again?

Depends on the engine and how long it idles. Generally, if you idled for over 30 seconds, odds are you would have saved gas by turning the engine off.

 

[Trez0r 10+ year member]

Depends on the engine and how long it idles. Generally, if you idled for over 30 seconds, odds are you would have saved gas by turning the engine off.

definately nice to know

 

[IgnoreMe 5,000+ posts]

Maybe where you live, but here on planet Earth it is just a citation that results in a fix-it ticket.

are you in canada?

i can guarantee if you are talking about the US though, its a federal crime...

 

[Jmac 10+ year member]

THANK GOD someone said it. i dont know why people dont do this. its not perfect, but it gives you a **** good idea. i also find, people who only fill up their tanks with $15 at a time complain about bad gas mileage alot.
for example: my girlfriend has a 4cyl mitsu mirage. she complained about gas mileage, and she would always fill up with $15-20 at a time. she said "i get horrible gas mileage)...so we filled it up. full tank. we then waited until it was empty. highway/street average was 32mpg...i should of slapped the *****.

Tank sensors aren't always accurate, so relying on that method obviously isn't going to be accurate.
If, however, you fill it up, then drive for X distance, then fill it up w/ Y volume until it is full again, you can divide X by Y to get a fairly accurate idea. Since gasoline (or diesel) is a liquid and, thus, expands and contracts w/ temperature, it's not going to be completely accurate.