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Power loss, inconsistent idle?

Tiny
ALEXANDER.YOUNIS
  • MEMBER
  • 2013 NISSAN SERENA
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
I just received an import car, which was sitting on the boat for 1month. It's a Nissan Serena 2013, 138000km. In park the engine idles by itself up and down and when driving, it runs smoothly until you hit over 2,000 RPMs then the engine loses almost all power and starts to rev up and down again. Thank you for your assistance.
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Saturday, March 11th, 2023 AT 9:06 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

This model isn't offered in the US, so I don't have the specifics. However, what you described sounds like it is related to the idle air control valve (IAC).

The IAC is what maintains a smooth idle speed. When it goes up and down as you mentioned, the IAC is usually the cause.

Take a look through this link for a better description:

https://www.2carpros.com/articles/how-a-idle-air-control-valve-works

I would start by trying to service it. Here is a link that explains how it's done:

https://www.2carpros.com/articles/idle-air-control-valve-service

Let me know if that helps.

Take care,

joe
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Saturday, March 11th, 2023 AT 10:07 PM
Tiny
ALEXANDER.YOUNIS
  • MEMBER
  • 2 POSTS
Thank you so much for your answer. I had a readout done and it's a sensor related to the airflow control which we will replace.
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Friday, March 17th, 2023 AT 11:48 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

You are very welcome and thanks for the update. I'm glad to know you found the issue.

If there is anything I can do to help, let me know.

Take care of yourself.

Joe
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Friday, March 17th, 2023 AT 8:39 PM

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