Cen-tech it's one from autozoneWhat scanner are you using?
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Cen-tech it's one from autozoneWhat scanner are you using?
Cen-tech it's one from autozone
Yeah it's Harbour Freight this is the only this i could find on it is a YouTube video. https://www.google.com/url?sa=t&source=web&rct=j&url=https://m.youtube.com/watch?v=kEqGMYe4phg&ved=2ahUKEwjduuDt-fT4AhW6g2oFHbz7A4sQtwJ6BAgjEAI&usg=AOvVaw1CQbBccT-Qtg0daNN2by3Q
How old are the O2 sensors?I'm new here so bear with me please. I have a 97 chevy k3500 pickup with 7.4l and automatic trans. It started spitting and sputtering backfires stalls out going down the the road it will shut off and start back on its own. I've replaced the distributor, plugs, wires, fuel pressure regulator, cps, fuel injectors, and ground straps that were missing. The crankshaft position sensor was the last thing I replaced it ran fine after I put in it in on the test drive. When I got in it the next morning same problems came back. I'm lost and need help please.
How can the ground wire test at 11.7 volts? Is it broken or not actually grounded?Ok I've test the voltage on power and ground wires. They both tested fine about 11.7 volts.
Moved the wiring harness all around while testing, to check for broken wires and all seems good.
Hard to know if that's an O2 sensor problem, or a tremendously lean air-fuel mixture, or heaps of misfire.O2B2S1 .155 to .120
That's insane. How do you plan to control the transmission?I'm almost to the point of put a carburetor on it.
I went from the ground wire on the icm plug to the positive side of the battery to see if I had ground. Key on engine off.How old are the O2 sensors?
How can the ground wire test at 11.7 volts? Is it broken or not actually grounded?
Is this with the engine running, or key on--engine off?
Hard to know if that's an O2 sensor problem, or a tremendously lean air-fuel mixture, or heaps of misfire.
That's insane.
11.7v when checking from the battery to the ground is VERY low. What did it read when you went to the battery ground instead? Getting a "voltage high" code when the voltage is reading that low is very suspicious. What was your knock count reading?I went from the ground wire on the icm plug to the positive side of the battery to see if I had ground. Key on engine off.
I have no idea how old the O2 sensors are.
I don't want to spend the money to change it over,but I have to get the truck up and running soon and that is an option.