What am I hearing?

[rmoconnor41]

First time I have had the bonnet up and the ignition on prior to the turn that starts the engine I.e all the instrument lights are lit.
Quite loud what I can only describe as an “electrical” sound.
What am I hearing?
Stops when the engine starts.
Thank you

 

[t-tony]

Dies your car have the auxiliary air pump fitted?

Tony.

 

[AntStark]

I thought it was the aux air pump Richard

 

[rmoconnor41]

Dies your car have the auxiliary air pump fitted?

Tony.

Hi yes it does although it doesn’t sound as though it is coming from there.

 

[t-tony]

An easy way to find out is just unplug the 2 wire connector.
A thickish brown/yellow wire IIRC. If the noise persists, it ain't that. I
The pump should cut off after only 30 seconds or so after engine starts.
Can you record/film it and post on YouTube?

Tony.

 

[rmoconnor41]

An easy way to find out is just unplug the 2 wire connector.
A thickish brown/yellow wire IIRC. If the noise persists, it ain't that. I
The pump should cut off after only 30 seconds or so after engine starts.
Can you record/film it and post on YouTube?

Tony.

https://youtube.com/shorts/7We_QoV0pIQ?feature=share
Hopefully you get this you tube short

 

[rmoconnor41]

https://youtube.com/shorts/7We_QoV0pIQ?feature=share
Hopefully you get this you tube short

 

[t-tony]

That looks and sounds as though it could be the Disa valve. Try unplugging the electrical connection when the ignition is on.

Tony.

 

[rmoconnor41]

That looks and sounds as though it could be the Disa valve. Try unplugging the electrical connection when the ignition is on.

Tony.

Thank you.
What can I expect if I unplug it?
If it is failing does it usually buzz electrically?
Is it okay to keep driving.
If I put the code reader on will it show up?
What amI looking at getting to replace it?
Once again thanks.

 

[rmoconnor41]

That looks and sounds as though it could be the Disa valve. Try unplugging the electrical connection when the ignition is on.

Tony.

Buzzing continues

 

[Lee]

Just above the disa you can see a pipe running horizontally, the connector next to that is also known to buzz, its the fuel vapour retrun line solenoid. Unplug that and see if it goes quiet.

 

[rmoconnor41]

Just above the disa you can see a pipe running horizontally, the connector next to that is also known to buzz, its the fuel vapour retrun line solenoid. Unplug that and see if it goes quiet.

one of these?

 

[Lee]

one of these?
View attachment 229189

In my previous post i had circled the connector in red.

 

[rmoconnor41]

In my previous post i had circled the connector in red.

Still buzzes with it removed

 

[Lee]

Can you not narrow down where it's coming from? get your fingers in there

 

[rmoconnor41]

In my previous post i had circled the connector in red.

Can you not narrow down where it's coming from? get your fingers in there

under the DISA box towards the rear

 

[Lee]

under the DISA box towards the rear

Only other thing i can think of is the throttle body. That has a motor on the side.

 

[t-tony]

Get a long screwdriver and use it as a stethoscope. Hold the tip onto an object and place your ear to the handle, check anything you can reach.

Tony.

 

[rmoconnor41]

Only other thing i can think of is the throttle body. That has a motor on the side.

It is one of those sounds that resonates. There is a lot of plastic around that area and it sometimes sounds like it is coming from inside the engine adjacent to the DISA. What are the implications of the throttle

Get a long screwdriver and use it as a stethoscope. Hold the tip onto an object and place your ear to the handle, check anything you can reach.

Tony.

Get a long screwdriver and use it as a stethoscope. Hold the tip onto an object and place your ear to the handle, check anything you can reach.

Tony.

it is booked into a local specialist to see if they can track it down before the inevitable costly fix

 

[rmoconnor41]

That looks and sounds as though it could be the Disa valve. Try unplugging the electrical connection when the ignition is on.

Tony.

Hi Tony
Some error codes that hopefully relate to the buzz