O2 Sensor advice

[gr3k0sLaV]

ok wondering,

do our cars have one or two O2 sensors, it seems whenever i look at my manifold I see one O2 sensor protruding out of it.

I fear its malfunction as lately my fuel economy has DROPPED, the car has been fully tuned, valve adjustment, new fuel filter and all that ,

but my exhaust smells REALLLY bad,!!

now ive also read that swapping O2 wires can increase performance or something?

need some advice

[carotman]

your car has only one sensor

[gr3k0sLaV]

sweet, how about the wiring, modifying and whether or not it is registering correctly?

i feel my fuel mixture is running way to rich, and the horrid and overpowering smell of my exhaust seems to point to that.

[87accordlxph]

Adjust the fuel/air mixture screw.
It's a black screw btw or add more air like a K&N filter.

[shepherd79]

chris, change your O2 sensor. don't adjust anything.
you can get O2 sensor for cheap.
if your car was fine and not it is getting low performance i would say change your O2 sensor.

[netfreak]

Eh, dont they have two sensors? I had an engine warning light come on a while back for my secondary O2 sensor... but i think the secondary is near the back of the exhaust

[locknload68]

Fuel injection has two sensors, carbs only have one.

[YK86]

Actually, 86-87 EFI use one, 86-89 carbed uses one, and 88-89 EFI use two.

[Immeraufdemhund]

that's unfair.. i want 2 O2 sensors... i need one for each atom in that molecule

[locknload68]

Sorry about that, I wasn't aware of the differences. Thanks for correcting me

[smufguy]

that is funny though cause right after our 3g, the 4g efi came with the same shit as the 86-87 emission stuff. the 4g has the same one O2 sensor. what did they do in 88-89?????