Jeenyus04

I have a 85 pickup with a 22r. do the o2 sensors even matter in these old of trucks if its just carb'd? i jus wonder if it even needs to be in there or plugged in.(the one on the exhaust manifold) j/w thanks

This ad is not displayed to registered members. Register your free account today and become a member on Yotatech!

Elton

dont think you need one

__________________
My Truck 98 4runner SR5 3.4L 5spd 4x4 E-Locker Mods
Mom 07 Tundra d-cab limited 5.7L 4x4 auto
sister 92 pickup SR5 X-cab 3.0L 5spd 4x4
Papa 89 Pickup SR5 X-cab 4x4 3.0L 5spd/98 4runner SR5 4x4 auto 3.4L
R.I.P 91 4runner SR5 4x4 3.0L 5spd Totaled 5/13/06 My Wreck

the_supernerd

Those are used on California smog 22Rs. It controls the fuel/air mixture and oxygen concentration in the exhaust for the exhaust for the catalytic converter to work properly. The O2 sensor sends a signal to the computer, and the computer controls the EBCV (controls fuel/air mixture) and the EACV (controls exhaust oxygen concentration). It will run without it, but it probably would not run as good without disconnecting some of the other smog controls.

I doubt you would see much of a performance gain by disconnecting them. The system keeps the fuel/air mixture precise as long as it is working properly, so it is not hurting much. Federal smog trucks are only rated at 2 more HP than California smog trucks. The timing advance curve is also different, which would probably account for the extra 2 HP.

__________________
-Anthony
1987 4x4 Carbureted 22R truck
Grill & brush guard | Roll bars | Bed liner | Tubular rear bumper | JVC CD-player | Custom 6.5" rear speaker boxes with 6.5" Sony X-Plods | Polk 3.5" speakers in dash | Fog & driving lights
Future mods:
Dynomax muffler | Spray on bed liner | Custom switch for fog & driving lights