fuel milage

i have 96 s 10 chev pick up it has the 4 cyl motor and ac. it has one hunded and five thousand miles on it . i have put new plugs new air filter in it and it runs fine and has good power i don,t see any or smell any fuel leaks but this truck only gets 10 miles to the gallon ,whats up or wrong.
thanks andy

 

If the oxygen sensor has 105K on it I'd consider that part of the tune-up
It's due, and an old one can ruin your mileage
It may not be the reason, but if it has 105K on it, it's not helping

 

thanks i had recently had replaced both 02 sensors because the engine light was comming on to replace them,after replacing them the light has gone off but the milage is still the same .thanks andy

 

Has it ever gotton more than 10 MPG?
How long have you had it?

 

i have had it 6 months gas milage has been the same during that time .thanks andy

 

I Put Ac Deco Sensors ,plugs, And New Air Filter,and Cleaned The Injecters,there Are No Leaks And I Have A Locking Gas Cap,truck Runs Fine.still 8 0r 9 Miles To The Gallon. Could It Be My Compter Chip Is Not Good .help Andy

 

Did you replace the fuel filter?

 

Dirty fuel filters don't cause a decrease in gas mileage.

 

i replaced the fuel filter

 

How did you calculate that you only get 10 mpg? You're saying that you put 10 gallons and you only drive 100 miles before you have to put 10 more gallons in?

A bad temperature sensor can cause poor gas mileage (keeps the computer thinking the engine is cold), but it should trigger the CEL. The AC on small engines will cause a fairly large drop in mileage also.

 

A bad/missing gas cap can also allow the gas to evaporate, but that should also trigger the CEL.

 

i fill it with gas then reset trip milage counter to 0 drive 20 miles go back fill up again and it takes 2 gallons,2 into 20 is 10 got me . thanks

 

Check for brakes dragging, parking brake is releasing properly, proper tire pressure, wheels are aligned, etc.

 

it had k kumho 793 p215175r15 all season radial tires with mag type wheels on it when i brought it,not the stock wheels ,would that cause that bad of gas milage difference from the stock tires.thanks again

 

thanks to every one who helped me on this hair puller,the it result was it had to be AC DELCO sensors( i used stanard brand the first time)and after installing them you need to unhook the positive batt cable for a couple of minutes and reconect and the system wil reset.i also done that with the standard sensors the first time.the problem was when i put the ac delco sensors on as i stated in few replys or posts back ,i did not do the batt thing i went back and done that today and i am good to go .thanks again

 

im having a similar probem with my car im just wondering, did replacing the oz sensor and resetting help? did it fix the mileage problem? please tell me.

 

your way of testing the gas mileage sucks, unless you fill the tank to the very top of the filler neck before you go and when you come back, you never know where the level in the tank is at when it shuts off. also the data you are collecting is not worth while. the level of where you fill it to when you get back to the pump has to much effect in the calculations because you are basing it off such little gas used. do it off almost a whole tank then get back to us

what sensor are you talking about. unhooking the battery would could cause you to loose fuel trims which fix themselves eventually anyways

in statistical math terms your population size is to small and a small change will have a big effect on your results

 

If the tires are bigger than the size posted on the inside of the driver's door that will affect mileage due to the fact that the tire has to rotate less times to go a mile. I had a truck that called for 195/75/15 tires but had 215/75/15 tires and that resulted in going 1.1 miles for every mile posted on the odometer.