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Idle speed fluctuations

Idle speed fluctuations

Yoshizakura
Junior Member
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5
14-04-2022, 09:56 AM
#1
Hi guys. I have a 2007 1.5 petrol daihatsu Materia. I was listening to the engine idling yesterday and it holds its revs nicely for about a minute then goes a little faster for same length of time and keeps fluctuating like this at idle.
Is there a problem somewhere?
What could be causing this?
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Yoshizakura
14-04-2022, 09:56 AM #1

Hi guys. I have a 2007 1.5 petrol daihatsu Materia. I was listening to the engine idling yesterday and it holds its revs nicely for about a minute then goes a little faster for same length of time and keeps fluctuating like this at idle.
Is there a problem somewhere?
What could be causing this?

Reply
Reply
Sparkystav
Administrator
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14,683
14-04-2022, 10:06 AM
#2
Is the air con on? Does the fan activate at the same time?
[Image: LexuS-Copy.jpg]
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Sparkystav
14-04-2022, 10:06 AM #2

Is the air con on? Does the fan activate at the same time?

[Image: LexuS-Copy.jpg]
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
OutlawJapClub Admin Team

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Yoshizakura
Junior Member
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5
14-04-2022, 10:21 AM
#3
Sparkystav Is the air con on? Does the fan activate at the same time?

I made sure the aircon was off and it happens even when the radiator fan is off.
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Yoshizakura
14-04-2022, 10:21 AM #3

Sparkystav Is the air con on? Does the fan activate at the same time?

I made sure the aircon was off and it happens even when the radiator fan is off.

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piman2k
Junior Member
Website Find
21
07-05-2022, 11:06 AM
#4
Does the Rev pitch change quickly, i.e. runs at one speed for a second or so then changes to another for a second or so?
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piman2k
07-05-2022, 11:06 AM #4

Does the Rev pitch change quickly, i.e. runs at one speed for a second or so then changes to another for a second or so?

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