Weird intake ticking noise when A/C on

Attack of the unibody snatchers! Styling and handling refined or bland? You decide.

Moderator: volvite

r50pathcr
Posts: 25
Joined: Tue Apr 17, 2018 10:37 am

Weird intake ticking noise when A/C on

Postby r50pathcr » Thu Jul 07, 2022 9:13 pm

Hello everyone,

I have a 2004 Pathfinder R50 with VQ35DE engine....

This week I noticed a very weird ticking/clicking noise on the left side of the engine... I think is coming from the intake manifold, but not sure to be honest...

The noise is not noticeable unless you pop the hood and if and only if the A/C is on... otherwise it won't occur...

I recorded a couple of videos, one with the A/C off and the other one with the A/C on, so you can tell the difference:


Engine sound with A/C OFF:

https://youtu.be/r20IOY1jkZU



And this one is where you can hear the ticking/clicking noise:

https://youtu.be/4ORJFhcMp2s




Any idea what could be wrong here? There are no performance issues at all, not other symptoms... A/C works perfectly... and the sound is definitely not coming from the compressor... is totally on the left side of the engine, opposite to where the compressor is located... and once you turn the A/C off, sounds disappears.... no recent changes done to the car either...

Thoughts?

Thanks in advance!


Return to “1996-2004 Pathfinder (R50)”