I think I have bigger problems now than O2 sensors. I was accelerating down the highway when it shuddered a little bit, in fact my first thought was I had a tire going flat. I took my foot off the accelerator while I ruled that out. When I pressed on the pedal again, there was no response, no power, nothing. Engine was still running, though roughly. I started to pull over, and was on the shoulder when the engine died, (still had electrical – the radio was on) and I coasted / braked (no power) to a stop. Puzzled, I tried to start it. It was hard to hear over the traffic noise going by, but it made a chattering, clanking noise and wouldn’t start. Ended up having my truck towed home.
I gave it a quick look over it this morning before I went to work, and plugged in my OBD. Only code was P1191, HO2 Heater circuit open, downstream sensors. Spark plugs and wires were tight (both are a year old). Fuses were fine. Vacuum hoses OK. No obvious sign of anything wrong. I was able to start it by giving it a lot of gas, and pumping the accelerator. It made a funny whirring noise while starting, runs very rough, and died when I let it idle. My first thought was the timing chain broke, but since it starts, have ruled that out.
Yesterday I added a can of Seafoam to the gas, and was planning on doing the treatment this weekend. Hah, famous last words. Would the Seafoam cause something? Would the O2 sensors screw it up badly enough to stall it? Any ideas or opinions on what may have happened or what to check? Anybody else experience something similar? This is a new one on me. Thanks.
I gave it a quick look over it this morning before I went to work, and plugged in my OBD. Only code was P1191, HO2 Heater circuit open, downstream sensors. Spark plugs and wires were tight (both are a year old). Fuses were fine. Vacuum hoses OK. No obvious sign of anything wrong. I was able to start it by giving it a lot of gas, and pumping the accelerator. It made a funny whirring noise while starting, runs very rough, and died when I let it idle. My first thought was the timing chain broke, but since it starts, have ruled that out.
Yesterday I added a can of Seafoam to the gas, and was planning on doing the treatment this weekend. Hah, famous last words. Would the Seafoam cause something? Would the O2 sensors screw it up badly enough to stall it? Any ideas or opinions on what may have happened or what to check? Anybody else experience something similar? This is a new one on me. Thanks.