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- Discovery II (https://landroverforums.com/forum/discovery-ii-18/)

- - Open Loop on Deceleration (https://landroverforums.com/forum/discovery-ii-18/open-loop-deceleration-90556/)

zuke	07-24-2018 06:33 AM

Open Loop on Deceleration

Have a small problem on a motor recently installed. I notice on my scan gauge a shift to open loop when decelerating at highway speed.

Any ideas? I was thinking maybe a vacuum leak or something.

mln01

07-24-2018 09:14 AM

Nope, open-loop on deceleration is perfectly normal and expected. Open loop also kicks in under full acceleration.

No Doubt

07-24-2018 11:15 AM

Normal

04in719

07-24-2018 12:23 PM

Agreed, it's shutting off fuel injectors on deceleration. No worries.

zuke	07-24-2018 12:25 PM

That's what I read on a Toyota forum but the odd thing is that my other 3 discos don't do it. Are you guys running Ultra Gauges and show this?

04in719

07-24-2018 12:49 PM

I am running an UG. Had one on a 2008 Jeep as well, did the exact same thing on deceleration.

mln01

07-24-2018 12:59 PM

UltraGauge

matt3502

07-24-2018 01:14 PM

Same thing using UG

No Doubt

07-25-2018 11:52 PM

Elm327 plus OBD Car Doctor App (free) for Android

The Deputy

07-26-2018 01:43 AM

Quote:

Originally Posted by zuke (Post 655498)

That's what I read on a Toyota forum but the odd thing is that my other 3 discos don't do it. Are you guys running Ultra Gauges and show this?

Bummer, now instead of having something wrong with one rover...you have something wrong with the three others...lol.

Brian.

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