Idle speed - Civinfo
 
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post #1 of 14 (permalink) Old 7th March 2019, 13:33 Thread Starter
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Idle speed

Hi Chaps

I have an intermittent issue with my 1.6 DTEC where occasionally my idle speed jumps from 800 rpm up to 1000 rpm. Does anyone have any the reason why this could be happening?

shaft.
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post #2 of 14 (permalink) Old 7th March 2019, 13:58
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Mine does that when I press the clutch pedal.
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post #3 of 14 (permalink) Old 7th March 2019, 14:34 Thread Starter
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Now you mention it joooe, I think it does happen when the clutch is depressed - hopefully nothing to worry about then. It never happened on my 8th gen 2.2 though.

How many miles has yours done joooe?

Last edited by shaft; 7th March 2019 at 15:01.
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post #4 of 14 (permalink) Old 7th March 2019, 16:31
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Mine is now around 53k miles on the clock. Remap since 27k miles.

Anyhow, revs do go up to about 900 rpm when I arrive at home, after parking in the garage. Then I put in neutral, remove my foot from the clutch and goes back to normal.
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post #5 of 14 (permalink) Old 8th March 2019, 12:05 Thread Starter
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Mine's twice as many miles joooe, drives beautifully though, I love it!
Doesn't always change the revs when I deploy the clutch though, as I say, it's intermittent.
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post #6 of 14 (permalink) Old 8th March 2019, 12:09
 
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Totally normal, mine does it all the time. Not sure why though
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post #7 of 14 (permalink) Old 8th March 2019, 12:53 Thread Starter
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Mine doesn't do it all the time stomper. Should I be worried?
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post #8 of 14 (permalink) Old 8th March 2019, 13:58
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You'll find it is linked to the operation of the Climate control:- You'll find the revs rise, and then fall to give an extra boost to the AC, without having to maintain a constantly higher idle speed, balancing economy with cabin conditioning.
A bit like when the fridge compressor cycles on and off

The 1.4 / 1.8 does similar.
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post #9 of 14 (permalink) Old 8th March 2019, 15:45
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Mine does it all the time too...
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post #10 of 14 (permalink) Old 10th March 2019, 04:37
 
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On mine, the car revs up for you to aid when pulling off. Try and pull off without using the accelerator and you'll notice it.
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post #11 of 14 (permalink) Old 11th March 2019, 11:23
 
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Quote:
Originally Posted by shaft View Post
Mine doesn't do it all the time stomper. Should I be worried? <a href="http://www.civinfo.com/forum/images/smilies/icon_confused.gif" border="0" alt="" title="Confused" ></a>
Haha as in it does it frequently not literally all the time &#x1f923; my bad
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post #12 of 14 (permalink) Old 5th April 2019, 16:31
 
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Mine did that - the odd increase to 1,000 rpm - and after a service it stopped doing it. They must have adjusted some sensor. I'm guessing the sensor that detects when you are lifting off the clutch to pull away and it was was a bit loose.

That's one benefit of a Honda service they see and fix things like that. They also fitted the bit of plastic that covers the bottom of the steering column which I'd tried and failed to do.

No charge and not even mentioned. Startins Worcester.
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post #13 of 14 (permalink) Old 5th April 2019, 16:38
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I must say, I noticed that the dealer tightened up my Handbrake without prompting or mention, which is welcome.
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post #14 of 14 (permalink) Old 15th April 2019, 15:40
 
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Idle speed will increase if a DPF regen is in progress. Usually accompanied with the cooling fans being on.

Generally a good idea to let the regen finish rather than turning the engine off part way through the cycle
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