Hello, no comment from you guys! Is the correct upstream O2 sensor for a 2004 I6 Chevy trailblazer part number 21054 from rockauto? I am going to try again tonight to get fuel trims and engine collant temp on the way home. In case you find flakes of charcoal, this could mean the charcoal canister has leaked or is leaking, and will need to be replaced. I would recheck, just to be sure. Look up your code definition. As the fuel ratio goes rich, the oxygen content decreases, causing an increase in voltage, a corresponding voltage decrease occurs when the mix goes lean oxygen content increases.
Major question I have is how fast should the o2 sensor be switching from rich to lean at idle and at 2000rpm? Due to factors beyond the control of the Big Dog50001 Automotive Channel, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Plus the engine has to be completely warm before the o2 sensor kicks in fully, but I'm sure you know that. But it is raining here this morning, I got my fingers crossed. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. I was recently getting cylinder misfire codes for 3 out of 4 cylinders! During idle there is vacuum with the hose disconnected. Is there possibly some obscure sensor located somewhere that could cause this? Alina- Evaporative emissions are basically gasoline fumes.
Either way from my waveforms in the first post, The highest frequency I measure is 0. Creating a simulated breif short. I live in cold climate and was wondering if the fuel lines icing up would pull these codes? My gauge sits about two ticks left of 210 but I have confirmed that my temps are between 190 and 202 when warmed up, depending on acceleration, speed, etc. Second thing I have noticed recently is my temp gauge sits 1 to 2 ticks to the left of 210 on my dash. I would say, if yours runs quietly, there is probably no manifold leak.
If your spark plugs look good, problems with your ignition system can also preventing a spark. I do know, it likes to be around 600 deg F, I would think it would shut off at the desired temp. Yes i am a single mother so i am trying to fix myself. We have a large number of resources to help you repair the problem. But, the majority has a good point about just doing it when doing the stat because it's right there. By any chance, do you have the infamous cracked exhaust manifold? The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. One line should always have vacuum when the engine is running.
Maybe not at idle or in deceleration when there's no fuel being burned. After about 100-200 km it came back on, Took it back in and they did some kind of update and replaced the sensor again. In my waveforms though it switches from. Hey Guys, I'm not an expert on O2's, but it is my understanding, that the mixture drives the voltage pulses. I dont want to take it in and would rather work on it myself but have found nothing on the net on this code that has been very useful. At idle I lost my nice 50% duty cycle and the frequency is much slower at 0.
That post-cat data is fine. Clean or replace the Purge Valve. I have an 05 Canyon with a 3. You should also check that the spark plug gap is set properly. In the scope displays, there is a difference in reaction time; however, both sensors are new one is not lazy , and probably, fully within spec. Determining the cause of excessive purge flow should be relatively straightforward.
Orvais- Apologies for the delay. Now don't ask yourself; What should you do with P1133 code? The faster the pulse rate, the more efficient is the complete fuel system. The purge valve sticking open is a common issue, but it could be caused by a failed canister. Tubing connects the fuel tank, canister, and engine. Personally I do it with my scan tool over a scope because I want to see what the pcm sees. The Big Dog50001 Automotive Channel assumes no liability for property damage or injury incurred as a result of any of the information contained in this video.
If I knew that i could easily calculate the frequency of expected O2 data. It tracks most things well, but some things on this vehicle I'm not too sure about. And if the sensor is telling the truth. The leak detection pump is part of the evaporative emissions system. I have read a lot about o2 sensors and have seen the term lazy to describe a sensor thrown around a lot. I do use a scope if I want to compare the sensors reading directly to the pcms reading. At this point the purge valve should be closed.
It would also smell of gas but when id look for the leak, I could never find one. Or do you mean how long it takes to transition from lean to rich? Hi Benjamin, I have a 2007 Kia Rio5 and had the P0496 code pop up as well as a cylinder 1 misfire. He wasnt much help when it came to telling me what that code meant. Here is how we suggest you proceed. So a few days later the code comes back again. After about 100-200 km it came back on, Took it back in and they did some kind of update and replaced the sensor again. The holes get clogged with carbon and the exhaust gas flow into the sensor chamber is restricted.
By any chance, do you have the infamous cracked exhaust manifold? Cleaning may or may not be sufficient to restore proper sealing. These codes came on during driving the last 2 times. The gauge was two ticks lift of center. The light has not returned. We know water temp can impact the delivery, but yours is not that far off, I don't think we are going back and forth between closed and open loop. I just replaced my upstream sensor 3 weeks ago, bought it from rock auto.