The title basically says it all. Can that be right? I've read that people on here have gotten up to mid 20's out of their carb'd camaros. I'm new to cars completely so I wouldn't know how to make my mpg better. Anyone wanna help me out??

 

could be a bad o2 sensor.

 

there's no catalytic convertors on my car so i dont think i have one

 

The cats would have nothing to do with the o2 sensor. It is located on the exhaust manifold.

 

ive heard some cars having them before and after the convertors so i figured it would. again im new to cars so im learning as i go along. how would i be able to check if it were working or not?

 

See what codes you pull with computer diognostics.

 

yes,mid 20s mpg is common with carbed 305s-o2
sensor does control the mixture within a narrow band
but not enough to affect the mileage to the level you
are experiencing...
you might have no power getting to the ECM-in that


case the metering rods will be stopped in the full rich
position and the distributor will not give full advance.
those conditions will give the bad gas milage
Does the CEL come on with the ignition on/engine not
started? Try to pull codes-if ECM does not respond that
is a good sign the ECM is not getting power or is bad
(bad ECM is very rare)
BTW no tools are needed to pull codes-you just
jumper two terminals on the ALDL plug under
the dash.

 

no check engine light. the choke lights been on for a week now even after checking the fuse, replacing the choke heater relay and replacing the alternator. But that wouldn't have much to do with my gas mileage situation.

i've never pulled codes before but ill look into it within the next few days. the wiring is pretty screwy as it was a project car before i bought it. its possible the cel may have been disconnected along with a number of other things as there are disconnected wires all over.

my neighbor told me the other day my car isnt giving me the power from me driving by it should and i think i agree with him. when i try and open it my car up on the road to test the power and pick up when flooring it, it doesnt respond the way i feel a v8 should

 

where would the o2 be if i had headers?

 

If there is no power to ECM wouldn't it run terrible, or even not run at all?

 

the carbed ones will run even if the ECM is missing
from the car-the main things on the engine that the ECM
controls are distributor advance,the primary metering
rods,and emissions valves.Engine will run pretty bad
but probably will be drivable.
Fuel injection engines will not run if ECM power is
missing
sabresfan,many headers have a bung to screw in the o2
sensor but some do not-sometimes the bung is there
but needs drilled out if an o2 sensor is to be used.

 

My car was running very good after a ccc qjet rebuild, but my mileage was not up to par. I was getting about 12 mpg? I replaced the o2 and it seems to be better now. If my ECM wasn't functioning, it wouldn't run as smooth as does right?

 

how would i be able to check to see if my ecm is functioning properly?