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Nov 13, 2007 | 09:12 PM

Pendragon

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SD question

I think I already know the answer to this question, but I wanna ask it for the peace of mind. When driving in SD mode, would a front O2 sensor unpluged affect the running of the car?

Nov 13, 2007 | 09:49 PM

edcmat-l1

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From: Va Beach

If its in closed loop, yes. Open loop SD, no.

Nov 15, 2007 | 02:14 PM

radkon

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From: Cleveland, Oh

Quote:

Originally Posted by edcmat-l1

If its in closed loop, yes. Open loop SD, no.

Right on!

There are two modes of SD

SD + open loop = no MAF and no O2
SD + closed loop = no MAF but using O2s

Nov 15, 2007 | 03:58 PM

VH5150

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From: Mass.

Quote:

Originally Posted by radkon

Right on!

There are two modes of SD

SD + open loop = no MAF and no O2
SD + closed loop = no MAF but using O2s

Why would anyone use CLSD??? I thought the whole idea of SD was to not use any O2's????

Nov 15, 2007 | 05:46 PM

RedHardSupra

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From: Laurel, MD

they have nothing to do with one another, one is a airmass model, the other is a final fueling correction, it's like comparing apples to tractors...

Nov 16, 2007 | 08:08 AM

radkon

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From: Cleveland, Oh

Quote:

Originally Posted by VH5150

Why would anyone use CLSD??? I thought the whole idea of SD was to not use any O2's????

CLSD uses the O2 sensors to make minor fueling adjustments with fuel trims. Not sure on its overall popularity but it can be done.

I run MAF + Closed loop anyway