Scangauge II fuel cut off seems to work very well

[2way]

The cutoff is to indicate to the ScanGauge that you are in DFCO and the injectors are shut off. When this happens and cutoff is set correctly, the ScanGauge will read 9999 on the iFCD and GPH goes to 0.

[racefan]

I have a 2004 Nissan Frontier and I know from the service manual that it states there is a fuel cutoff on decelleration. That said the TPS is 0 at idle. What happens if I simply de-activate the Fuel Cut-off feature? I do not want inaccurate readings. Any suggestions with regards to my truck? BTW it's an auto. Thanks in advance.

[2way]

Set the cutoff to 1. I'm not sure on what it does for accuracy.... but, it helps if you want to take advantage of DFCO.

[CarlD]

Originally Posted by racefan

I have a 2004 Nissan Frontier and I know from the service manual that it states there is a fuel cutoff on decelleration. That said the TPS is 0 at idle. What happens if I simply de-activate the Fuel Cut-off feature? I do not want inaccurate readings. Any suggestions with regards to my truck? BTW it's an auto. Thanks in advance.

Idle TPS reading shouldn't be a problem since it will be closed loop except when initially warming up. Look at TPS and LP when coasting down in gear to get an idea of what value to choose. A setting of 1 will almost certainly never invoke fuel cut.

[Chris D.]

Originally Posted by 2way

The cutoff is to indicate to the ScanGauge that you are in DFCO and the injectors are shut off. When this happens and cutoff is set correctly, the ScanGauge will read 9999 on the iFCD and GPH goes to 0.

I'll check the GPH to see what it sais when downshifting.. never thought of that DUH!

forgive me, I'm 1/2 n00bish on my fathers side

[R E P U B L I C]

A BIG Thank you to Wyane .. I got my scan gauge 2 about an hour & a half a go........
I am like a little kid at Christmas!~!!!!!!!1
Next time Wyane I'll pay the extra to go NON-usps!!!!!
Got it !!!!!Wyane & am real happy!!!!!!! 18th to the 29th.... maybe the
scan gauge had to go tru customs comeing into New Mexico (grin)
Thanks AGAIN

[2way]

Originally Posted by CarlD

Idle TPS reading shouldn't be a problem since it will be closed loop except when initially warming up. Look at TPS and LP when coasting down in gear to get an idea of what value to choose. A setting of 1 will almost certainly never invoke fuel cut.

Yes & no. If TPS is 0 at idle and indicates closed throttle, a setting of 1 should work just fine. As you say, the idea is that you want to know throttle closed & Open Loop. When set to 1, if you go below, it indicates a closed throttle (TPS=0). In one of my cases, idle TPS is 10 and my cutoff=11.