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This week in (like an idiot) ran the pm out of gas. I think theres some useful knowledge to be had. Heres the poop:
Driving fast into headwinds and got it down to right near the empty line. Pulled into a station and parked about 30 feet from the pump. I was on the phone with a buddy, and wanted to finish the call so i just sat there idling, jawing away. 10 minutes later the van just shut off. No cough, no sputter, no warning other than the text message and low fuel light. Would not restart.
Sheepishly, i pushed the van up to the pump. Surprisingly easy to push on flat ground (3500 ext w/ 600# load). Fueled and it started first crank, no warnings or messages.
Whats odd is that it only too 23.53 gallons. There was an instance a while back where i ran it low and pumped 23.75 into it. Conclusion: i suspect the van shut ITSELF down with .5g in the tank, but had i been moving and not in park it would have kept running right up to 24g. Why? Is it possible that a low duty cycle the PCM fuel pump draws less fuel at idle so it cant cool itself with fuel flow, and if the tank is low it cant use the tank fuel as coolant? Or maybe the engine killed itself because it calculates its remaining fuel by duty cycle and miles driven, instead of relying on the float gauge? Is it possible it does this to not lose its prime, but when driving it asumes youd rather try to make it to a gas station than risk your prime?
Dunno, but you would assume the tank is the full 24 plus an undocumented reserve. Anybody gotvany ideas? You need NOT call me stupid for running it dry, i already know i AM stupid. Weird; last time i ran out of gas was 1989.
Driving fast into headwinds and got it down to right near the empty line. Pulled into a station and parked about 30 feet from the pump. I was on the phone with a buddy, and wanted to finish the call so i just sat there idling, jawing away. 10 minutes later the van just shut off. No cough, no sputter, no warning other than the text message and low fuel light. Would not restart.
Sheepishly, i pushed the van up to the pump. Surprisingly easy to push on flat ground (3500 ext w/ 600# load). Fueled and it started first crank, no warnings or messages.
Whats odd is that it only too 23.53 gallons. There was an instance a while back where i ran it low and pumped 23.75 into it. Conclusion: i suspect the van shut ITSELF down with .5g in the tank, but had i been moving and not in park it would have kept running right up to 24g. Why? Is it possible that a low duty cycle the PCM fuel pump draws less fuel at idle so it cant cool itself with fuel flow, and if the tank is low it cant use the tank fuel as coolant? Or maybe the engine killed itself because it calculates its remaining fuel by duty cycle and miles driven, instead of relying on the float gauge? Is it possible it does this to not lose its prime, but when driving it asumes youd rather try to make it to a gas station than risk your prime?
Dunno, but you would assume the tank is the full 24 plus an undocumented reserve. Anybody gotvany ideas? You need NOT call me stupid for running it dry, i already know i AM stupid. Weird; last time i ran out of gas was 1989.