Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - ScanGauge II does not show open loop under DFCO?

Pappnese · 07-01-2010, 11:55 AM

Hi

my SGII does not show open loop (and hence not 0.0 l/100km) during DFCO. I can tell the vehicle does have DFCO ('99 Chrysler Grand Voyager, 2.4L 4speed AT), both "manually" by watching the tacho during decel, and by the XGauge O2-program as it shows 0 or 2 during DFCO, else it bounces around between 20-90.

Throttle position is 16-17 when I'm off the pedal, and the SGII DFCO threshold is at 24 (default).

Sometimes, if not always (not sure) when I lift off the throttle, the display shows OPEN LP and 0.0 LHK for a split second, before it goes back to CLSD LP and ~2-3 LHK. The O2 drops to ~0 and stays there.

It is always OPEN LP at full throttle accel.

Is there any way to "force" the SG to sense DFCO, or correct this in any way?
Or maybe my assumtion that the car does DFCO is wrong?

07-01-2010, 11:55 AM	#1 (permalink)
Pappnese EcoModding Lurker Join Date: Jun 2010 Location: Trondheim, Norway Posts: 14 CGVES - '99 Chrysler Grand Voyager ES Thanks: 0 Thanked 0 Times in 0 Posts	ScanGauge II does not show open loop under DFCO? Hi my SGII does not show open loop (and hence not 0.0 l/100km) during DFCO. I can tell the vehicle does have DFCO ('99 Chrysler Grand Voyager, 2.4L 4speed AT), both "manually" by watching the tacho during decel, and by the XGauge O2-program as it shows 0 or 2 during DFCO, else it bounces around between 20-90. Throttle position is 16-17 when I'm off the pedal, and the SGII DFCO threshold is at 24 (default). Sometimes, if not always (not sure) when I lift off the throttle, the display shows OPEN LP and 0.0 LHK for a split second, before it goes back to CLSD LP and ~2-3 LHK. The O2 drops to ~0 and stays there. It is always OPEN LP at full throttle accel. Is there any way to "force" the SG to sense DFCO, or correct this in any way? Or maybe my assumtion that the car does DFCO is wrong?