Chevy Silverado 4.3L / 8.1L 2001, Secondary Air Injection Pump by World Source One®. World Source One® Secondary Air Injection Pump. But you’d have to fix it by the time the smog test is needed again, in two years. Designed to replace your worn out factory emission part Optimizes engine cooling performance. If this is the first time this has happened, I think there’s probably a second way to get around all this. The O2 sensor monitor has run, and PASSED, but the converter monitor wont run. The monitor should run when the engine has reached normal operating temperature, the inlet air temperature is between 40 and 100 degrees F, and the vehicle is cruising at a steady 40 mph for four minutes. For instance, Ive found marginal O2 or AF (air/fuel) sensors to be the cause. First, make sure that the check engine light is not commanded on. But if you phone you may get someone willing to help. OBD II Readiness Monitors Monitor Status Helping set Monitors. Thousands of miles of driving and with having followed the Chevy Silverado drive cycle, and still not ready OBD-II monitors will require some hands-on investigation. Answer: Your best bet is going to be with a dealer or smog check repair station diagnosis.
#2001 SILVERADO SECONDARY AIR MONITOR DRIVER#
B1239 Air Flow Blend Door Driver Circuit Failure. The air filter was also replaced during that time. Unfortunately, if the website is still like it was when I was going through a similar problem about a year ago, the BAR website isn’t very well organized, almost to the point where it appears the BAR is trying to obfuscate the issues and how the owner can resolve them for some reason. if only the oxygen sensor heater monitor is not ready, but the oxygen sensor monitor, catalyst monitor, evap monitor, secondary air system (if applicable), and egrsystem (if applicable) are ready, then, in almost all cases, the heater monitor will eventually set and be 'ready.' when a heater circuit is getting old, it can be one of the last. That is why troubleshooting is required to determine the cause. any information on this issue would be greatly appreciated.
If all else fails, you might try phoning up the Calif BAR and see if they can offer a solution. hello gm truck club commuinty i’m having issues with a smog readiness monitor not completing. All you want to do is get the car smogged, but no clear way to get past this hurdle.
Maybe get your charging system and battery tested.Īll this sound pretty frustrating. A bad/loose fuse to the ECM, bad battery connections, battery on the fritz that drops out on bumps, etc. And maybe the cat monitor is just the one that takes the longest to complete. The ECM would randomly keep starting over with the monitors. It’s also possible the ECM is losing power for some reason, temporarily. Visit during a day/time when they aren’t very busy. They probably deal with this quit a bit, and they are the experts. In order to be classified as a cold start the engine coolant temperature must be below 50☌ (122☏) and within 6☌ (11☏) of the ambient air temperature at startup. I think if I had this problem I’d visit a Toyota dealership shop and ask them what driving pattern is needed for that monitor to complete. First you can have it reset with a scan tool.
You may just have to repeat that protocol a few times, and keep checking on your own. Do you own an OBD II tool? They aren’t super expensive and are reported to be easy to use. You may have to experiment a bit to get it to set.
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