Quote:
Originally Posted by MetroMPG
Jayliu - SentraSE-R is right - your gauge (ScanGauge, UltraGauge?) may not be properly configured to show when your engine is in fuel-cut.
Alternatively, you could also try monitoring the Loop status (Open/Closed). You might see that change (from closed to open) when the engine is in fuel cut mode even if the fuel/hour may not.
And I bet if you went on an Accord forum, someone with the factory service manual would be able to detail the exact conditions under which fuel cut occurs. As was said, it's different for different vehicles, and depends on a number of variables.
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Hello MetroMPG, thanks for the tip! Now all the puzzle pieces are coming together.
I use a Chinese gauage that display 8 stats (2 are fixed to speed and instanteous MPG). I have configered it to display Fuel Status, and I have noticed very strangely that the car will enter "close loop" very quickly after start but it will almost always switch to "open loop - driving" (direct translation from on screen chinese) which baffled me until now.
I was wondering why would it entre "open loop-driving" no matter how light I step on the gas. And it always swtich to it AFTER I released the padel. I thought it was because lag, now I know better.
Next time I will try to switch to neutrul when it is in "open loop - driving", see if it will switch to close loop.
However, I can't seen to able to configure the device to recognize the mode.
For anyone who is interested, I do strongly recommand this product. Here is the english version on dealextreme which cost $100 (still cheaper than UG)
A301 Vehicle Car OBD Multi-Function Trip Computer - Black (3.0" LCD) - Free Shipping - DealExtreme
And since I am Chinese and have relative come visit me last month, I bought the Chinese version (exact same stuff just language) for only $40 equivalent.