I need some sure answers on this. If I cant get this smogable for cheap I may just have to 86 (sell/trade combo of both) it for something more streetable. The guy I bought it from said this engine did not require an 02 sensor behind the cat.
I bought a 97 tj with a 97 chevy 5.7 cmpi vortec (AZ) from a truck that I would like to make California smog legal. I have only two 02 sensors befor the cat. I can't get anyone so far to tell me if I need one behind the cat. The guy at the smog station said some chevy trucks didn't have on behind the cat but couldn't tell me if mine was one of them. He recommended that I have it inspected by a ref. I called them to make an appointment but they said their new policy vehicle has to fail at smog station before I can get an appointment. I don't see a third (or fouth) 02 sensor plug coming from the wiring harness (howell). I e-mailed howell and asked them about a rear sensor. Their answer was unclear. They said they make a harness with three and four sensors, but didn't answer my question if I needed the rear sensor for my engine. Has anyone gotten a california smog legal cert for a 5.7 vortec with only the two 02 sensors before the cat?
I bought a 97 tj with a 97 chevy 5.7 cmpi vortec (AZ) from a truck that I would like to make California smog legal. I have only two 02 sensors befor the cat. I can't get anyone so far to tell me if I need one behind the cat. The guy at the smog station said some chevy trucks didn't have on behind the cat but couldn't tell me if mine was one of them. He recommended that I have it inspected by a ref. I called them to make an appointment but they said their new policy vehicle has to fail at smog station before I can get an appointment. I don't see a third (or fouth) 02 sensor plug coming from the wiring harness (howell). I e-mailed howell and asked them about a rear sensor. Their answer was unclear. They said they make a harness with three and four sensors, but didn't answer my question if I needed the rear sensor for my engine. Has anyone gotten a california smog legal cert for a 5.7 vortec with only the two 02 sensors before the cat?
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