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Idle increase issues

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Old Jul 8, 2020 | 02:37 PM
  #1  
Richard Ramirez's Avatar
Richard Ramirez
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Idle increase issues

I have a 2017 F350 super duty and today my truck started doing this weird thing where it'll bounce up from normal I'll idle speed which is about 600 rpm to a 1000 rpm it will increase slowly and it will stay there until I tapp the the accelerator then it will go back down it normal idle speed I am sitting in the truck with the ac running and it's about 94 degrees outside does anybody have any experience with this problem is it normal if it's not how do I fix it
 
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Old Jul 8, 2020 | 02:49 PM
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It needs to ramp up to keep the ac and cooling working. Same thing in the winter they will idle up because they are not making enough heat to be happy. Completely normal.
 
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Old Jul 8, 2020 | 03:14 PM
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^^^ What he said
 
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Old Jul 8, 2020 | 03:26 PM
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I find this to be normal in every vehicle I own when the AC kicks on.
 
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Old Jul 8, 2020 | 06:00 PM
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If it's a diesel it might be trying to do a regen.

 
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Old Jul 8, 2020 | 06:14 PM
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Originally Posted by longhaultransport
If it's a diesel it might be trying to do a regen.
Nope, they don't regen when stationary unless forced to do so
 
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Old Jul 8, 2020 | 06:18 PM
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Originally Posted by johndeerefarmer
Nope, they don't regen when stationary unless forced to do so
Ok, didn't know that.

I'm sure my 6.4 used to do them, just figured that carried over.

 
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