High pitch noise from engine bay and dead battery

[Olliebeal]

Hi guys. I have a 1.5 dci clio and have been having problems over rhe last few weeks.
First the car died. 2 weeks ago the battery was dead so jumped it. Then died again and battery was flat again a day later. Went outaide to check the car and heard a high pitch electrical noise coming from the engine bay. Upon closer inspection the noise seems to be coming from the egr valve or just under it. Thought it was a faulty battery so got a new one before i heard the noise so got a new one. Was fine for a few days then started cutting out again. The noise from the engine bay hasn't stopped. I took off the egr and cleaned it well and the noise went for a couple days. The car then died again and a injector fault warning came up on the dash. Then went away. No codes on the code reader and the humming noise has continued. Tonight my new battery was flat again. I think this humming noise is draining my battery. Any ideas. Also a clicking noise coming from the black box to the right of the battery. Thanks

 

[iimushroomzii]

Alternator?

 

[Krarl]

Aye you wanna check the alternator

If it's a later dCi it might have a clutched alternator pulley

 

[Olliebeal]

Aye you wanna check the alternator

If it's a later dCi it might have a clutched alternator pulley

Why would the alternator have anything to do with it. When the car is running the battery is being charged properly. How do i check it

 

[Krarl]

Why would the alternator have anything to do with it. When the car is running the battery is being charged properly. How do i check it

Get a multimeter across it with the car running if it runs

If not just take the aux belt off and see if you can spin the alternator freely

 

[Olliebeal]

Get a multimeter across it with the car running if it runs

If not just take the aux belt off and see if you can spin the alternator freely

Oh yeah ive done that already. When its runnig battery voltage is like 14.7

 

[Krarl]

Oh yeah ive done that already. When its runnig battery voltage is like 14.7

Anywhere between 14.5 and 14.7 usually aye

Stick the lights on and it should drop to about 13.5 iirc. You say a squealing near the EGR... well under the EGR and inlet J tube that's where the turbo is 😂

 

[Olliebeal]

Qeb the

Anywhere between 14.5 and 14.7 usually aye

Stick the lights on and it should drop to about 13.5 iirc. You say a squealing near the EGR... well under the EGR and inlet J tube that's where the turbo is 😂

Anywhere between 14.5 and 14.7 usually aye

Stick the lights on and it should drop to about 13.5 iirc. You say a squealing near the EGR... well under the EGR and inlet J tube that's where the tu

It happens when the car is off. For example. The car was off for 4 hours. I go outside and the noise is still present.

 

[Olliebeal]

Qeb the

It happens when the car is off. For example. The car was off for 4 hours. I go outside and the noise is still present.

And i think whatever makes that noise is what is draining my battery

 

[Krarl]

Qeb the

It happens when the car is off. For example. The car was off for 4 hours. I go outside and the noise is still present.

Got a video?

 

[Olliebeal]

Got a video?

I'll see if i can get one later the battery is on charge rn

 

[Krarl]

Sound no worries

 

[Louis]

Throttle bodies and headlight adjusters tend to make a high pitch noise on 182s. Anything same on the dci?

 

[Krarl]

Throttle bodies and headlight adjusters tend to make a high pitch noise on 182s. Anything same on the dci?

Nah

@Olliebeal just swap your ECU relay and the heated screen relay around. My sisters MK3 used to keep the ECU energised with the key off because the relay was fucked, never drained the battery because she was always driving luckily. One day I borrowed it and wondered why the boost solenoid was still humming after 45 mins 😂 I've got a spare fusebox for one here too if you need that

 

[Olliebeal]

This isnt a video but the noise comes from the egr in the first picture and a clicking in the black box on the second

 

[Krarl]

Aye same issue😂 Open up your fuse box and find the relay that clicks and swap it out

Should be black ones from memory

 

[Olliebeal]

Also getting 14.5 from the battwry on idle

 

[Olliebeal]

Aye same issue😂 Open up your fuse box and find the relay that clicks and swap it out

Should be black ones from memory

So change that relay but what about the humming noise

 

[Krarl]

So change that relay but what about the humming noise

The humming will stop with the key out. The relay is stuck on rather than clicking off so the EGR will still be getting power with the key off

 

[Olliebeal]

The humming will stop with the key out. The relay is stuck on rather than clicking off so the EGR will still be getting power with the key off

Ohh okay

 

[Olliebeal]

The humming will stop with the key out. The relay is stuck on rather than clicking off so the EGR will still be getting power with the key off

Ive got into the fuse box. This connector is loose with no where for it to go what relay is it

 

[Krarl]

Aye that's normal I'm sure they just made 1 loom for every K9K MK3

You want to pull out those black relays until you stop hearing the buzzing noise from the EGR then replace the one that's buggered mate

 

[Olliebeal]

Aye that's normal I'm sure they just made 1 loom for every K9K MK3

You want to pull out those black relays until you stop hearing the buzzing noise from the EGR then replace the one that's buggered mate

Okay thanks mate. Would this of caused my battery to die

 

[Krarl]

Okay thanks mate. Would this of caused my battery to die

More than likely yes mate

They don't draw loads of power but if left for long enough they do sap the life out of a battery

 

[Olliebeal]

C

More than likely yes mate

They don't draw loads of power but if left for long enough they do sap the life out of a battery

Thanks mate. I pulled the second relay out and the clicking stopped. So just replace that one yeah

 

[Typhoon]

C

Thanks mate. I pulled the second relay out and the clicking stopped. So just replace that one yeah

Yes.

 

[Krarl]

Aye mate