Thank you @2001LC!! The amount of time, detail, and dedication you have put into figuring out this problem is absolutely remarkable.
I'd like your thoughts on one more aspect of this stumble and stalling issue in the hot afternoon summer sun, when idling at a stoplight. I've had the stumble & stall happen more than two dozen times in the past 6 years that I've owned my 2006 LX, and on two of those occasions (and only two), it sounded like fuel was boiling in the gas tank. The last time was in July 2022 and I actually got video looking down into the fuel filler neck, where you can see fuel shooting across. It was pretty wild. I haven't heard any fuel gurgling or boiling since then but the stumble & stall issue is still very present every summer. I've also seen my fuel economy drop in the past 1.5 - 2 years from around 14 - 15 mpg down to 12 - 13 mpg. I did put on an Ironman 4X4 front bumper in Feb (2025) but the fuel economy had been dropping for more than a year prior to that. Vehicle exhaust is very strong.
Are the fuel boiling (3 years ago) and current low fuel economy, signs of a bad charcoal canister? Does the fact the fuel was boiling at one point change the diagnosis of a failing fuel pump, or is boiling fuel another byproduct of a failing fuel pump?
Thanks again!
I'd like your thoughts on one more aspect of this stumble and stalling issue in the hot afternoon summer sun, when idling at a stoplight. I've had the stumble & stall happen more than two dozen times in the past 6 years that I've owned my 2006 LX, and on two of those occasions (and only two), it sounded like fuel was boiling in the gas tank. The last time was in July 2022 and I actually got video looking down into the fuel filler neck, where you can see fuel shooting across. It was pretty wild. I haven't heard any fuel gurgling or boiling since then but the stumble & stall issue is still very present every summer. I've also seen my fuel economy drop in the past 1.5 - 2 years from around 14 - 15 mpg down to 12 - 13 mpg. I did put on an Ironman 4X4 front bumper in Feb (2025) but the fuel economy had been dropping for more than a year prior to that. Vehicle exhaust is very strong.
Are the fuel boiling (3 years ago) and current low fuel economy, signs of a bad charcoal canister? Does the fact the fuel was boiling at one point change the diagnosis of a failing fuel pump, or is boiling fuel another byproduct of a failing fuel pump?
Thanks again!
