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Open Loop on Deceleration

   
Old Jul 24, 2018 | 06:33 AM
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zuke's Avatar
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Default 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.
 
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Old Jul 24, 2018 | 09:14 AM
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Nope, open-loop on deceleration is perfectly normal and expected. Open loop also kicks in under full acceleration.
 
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Old Jul 24, 2018 | 11:15 AM
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Normal
 
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Old Jul 24, 2018 | 12:23 PM
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Agreed, it's shutting off fuel injectors on deceleration. No worries.
 
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Old Jul 24, 2018 | 12:25 PM
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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?
 
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Old Jul 24, 2018 | 12:49 PM
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I am running an UG. Had one on a 2008 Jeep as well, did the exact same thing on deceleration.
 
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Old Jul 24, 2018 | 12:59 PM
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UltraGauge
 
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Old Jul 24, 2018 | 01:14 PM
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Same thing using UG
 
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Old Jul 25, 2018 | 11:52 PM
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Elm327 plus OBD Car Doctor App (free) for Android
 
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Old Jul 26, 2018 | 01:43 AM
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Originally Posted by zuke
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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