@Greenie : Stuck-open Injector, allegedly fixed, and then a subsequent Rich Fuel CEL code.
I’m surprised about the injector issue. 30+ years now and I’ve never had a problem with an injector driving only 4 vehicles almost 1 million miles now! My experience says Injector failure is extremely rare! And to have such a failure at your extremely low mileage makes it even more rare (I would say)!
Had you been seeing any fuel economy dip before these trips? I would think it would be odd if this problem only occurred on the two trips? Were you towing both times? Not sure if towing could stress an engine enough to cause these symptoms.
What about just a wonky O2 sensor? Have you tried logging their performance on an OBD-2 handheld? O2 sensors live in that harsh environment and are known to be problematic over time. They’re also what the ECM relies on to help determine a “Rich” condition.
I’m surprised about the injector issue. 30+ years now and I’ve never had a problem with an injector driving only 4 vehicles almost 1 million miles now! My experience says Injector failure is extremely rare! And to have such a failure at your extremely low mileage makes it even more rare (I would say)!
Had you been seeing any fuel economy dip before these trips? I would think it would be odd if this problem only occurred on the two trips? Were you towing both times? Not sure if towing could stress an engine enough to cause these symptoms.
What about just a wonky O2 sensor? Have you tried logging their performance on an OBD-2 handheld? O2 sensors live in that harsh environment and are known to be problematic over time. They’re also what the ECM relies on to help determine a “Rich” condition.