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dcb · 07-13-2011, 03:11 PM

Well if it does the same thing on the return trip and you are being careful on the refuel procedure then that would be further evidence of it missing fuel. Since it goes to 999 on the downhill then it seems to recognize the dfco condition, and if it didn't then it would report more fuel than actual, and it is reporting less than actual.

AFAIK it uses airflow to determine fuel flow and assumes stoic, and it is not unusual for cars to go into enrichment mode with the pedal near the floor, so that is my best guess. Maybe next time you are climbing, see if your car goes into open loop and if so try to find a throttle position just under open loop (if that setting is sufferable).

07-13-2011, 03:11 PM	#4 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	Well if it does the same thing on the return trip and you are being careful on the refuel procedure then that would be further evidence of it missing fuel. Since it goes to 999 on the downhill then it seems to recognize the dfco condition, and if it didn't then it would report more fuel than actual, and it is reporting less than actual. AFAIK it uses airflow to determine fuel flow and assumes stoic, and it is not unusual for cars to go into enrichment mode with the pedal near the floor, so that is my best guess. Maybe next time you are climbing, see if your car goes into open loop and if so try to find a throttle position just under open loop (if that setting is sufferable). __________________ WINDMILLS DO NOT WORK THAT WAY!!!