My truck's ECM has for some reason or other decided to ignore my o2 sensors, and I am wondering if I could safely drive it for a 2 hour round trip on the highway for Thanksgiving, or if it would run to lean and create more problems.
My truck's ECM has for some reason or other decided to ignore my o2 sensors, and I am wondering if I could safely drive it for a 2 hour round trip on the highway for Thanksgiving, or if it would run to lean and create more problems.
Always buying things I dont need to impress people I dont know
What do you mean by ignoring your o2's?
T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
It's neither sending,or receiving signal from them. Checked all wires and fuses and have continuity, but when hooked up to a scan tool o2 signal voltage reads 0 for both. The sensors are new Densos, less than 100 miles on them.
Did it start after you swapped the sensors? Isn't there case ground and harness ground sensors?
Slowest in Oklahoma...
What'd you torque them to?
It started right after I swapped tunes, check engine light came on right as I was pulling out of the post office sending my core back.I figured it was probably the Bosh o2's I had, unlikely they both fail at the same time, but stranger things have happened. So I swapped in these Densos, and same problem. Tightened them in till they were just snug with the wrench. Took it to a shop the other day after I looked at all the connections and fuses, they hooked up a scan tool and checked all the wiring. Only thing they could think was the computer, so I sent in for a new tune, which hopefully will clear up the issue.
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