Pulsing noise at idle

[match14]

My Octavia is making what I can only describe as a pulsing noise at idle. I have turned off the air con in case it was the compresser. I can only here it when sitting in the cabin but it sounds like it is coming from the engine bay but I can't hear it when I go out and lift the bonnet.

 

Any suggestions?

[TonyD]

Fuel pumps

[match14]

Thanks never thought of that, where are they located?

[match14]

Had an other listen can't hear the noise underneath car so don't think it is fuel pumps. Definitely coming from behind the dash. It maybe climate control related as I turned the temp all the way to low and it stopped.

 

Looks like it will have to go in

[MoggyTech]

Blocked pollen filter or aircon gas low.

[glosrich]

There is a background kind of low pitch squeaking noise the aircon fan makes. 

 

I've noticed it at idle, and if you turn the system off it stops.

 

The Octavia isnt a Rolls Royce, so I doubt Skoda will be interested in fixing it, just have the radio on so you don't notice it.

 

 

[match14]

Radio has to be turned up a fair bit to drown it out

[Superad]

Is it a dsg? I had exactly the same issue and it was my clutch. Common issue on the 7 speed dsg as it is a dry clutch.

[Ootohere]

A petrol internal combustion engine.  4 pistons going up and down, an oil pump, a water pump operating it would be a worry if no noise at idle 

you would need to go for a hearing check.

Edited 18 May, 2017 by Awayoffski

[match14]

1 hour ago, Superad said:

Is it a dsg? I had exactly the same issue and it was my clutch. Common issue on the 7 speed dsg as it is a dry clutch.

It's a manual 

[match14]

1 hour ago, Awayoffski said:

A petrol internal combustion engine.  4 pistons going up and down, an oil pump, a water pump operating it would be a worry if no noise at idle 

you would need to go for a hearing check.

lol :-) however I probably should have stated at the beginning that this noise in question was intermittent and has now ceased probably due to a change in the weather.