Aircon pump squeak / chirp.

Pump on my car has suddenly become noisy as hell after a mere 200 miles, squeak can be heard quite a distance from the car, anyone else had the same issue ?
If you put your hand on the pump when running there's a vibration in time with the chirp, not sure it's long for this world
The oil leak has begun at the other end so I guess I'll be killing 2 birds with one stone when I give them a bell after Christmas

 

[Harry 17]

This is mine running flat out. It's more of a chirp at low speed:

Sounds much the same as mine. As others, can not hear a thing when inside the cabin.

It did concern me initially, but seeing as most on here have the same sound, not too bothered about it. At least people wondering around car parks on their smart phones and / or their heads in the clouds, will hear me parking up in summer

 

[AndyL61]

Mine has now done nearly 7k miles. Even from outside the car I don't consider the noise excessive. Yes it makes a noise but there is no engine to drown it out. From inside the car it is silent so as long as it keeps working that's fine with me. If it does break then they will have to fix it.

 

[tsedge]

Comparisons should ideally be with other EVs with the same conditions / settings, to be valid.

 

[paulm]

Comparisons should ideally be with other EVs with the same conditions / settings, to be valid.

Have you done this?

Thanks.

 

[Deleted member 10041]

Comparisons should ideally be with other EVs with the same conditions / settings, to be valid.

Checked mine today blowing as cold as it goes on full setting hardly any noise

 

[tsedge]

Have you done this?

No. I only have 1 EV.

Mine makes some noise but not something I hear when in the car so it isn't anything I can be bothered to investigate further.

If something goes wrong or it gets really loud, I will take it to my dealer.

 

[Eber]

The air conditioning compressor on my MG4 was a bit strange, too. It sounded "imbalanced", like an old fan. But it was not as noisy that it would have bothered me. That said, the compressor on our Ioniq 5 is rather noisy as well, when the car was parked in the sun and it has to work hard to cool it down. It is inaudible in regular conditions.

 

[PristDean]

So with the radio now 'kaput' in my car, so driving in 'silence', today I have noticed that between 60 & 70 mph with the AC off, the car emits a low pitched metallic warbling type whistle. Lower than 60 mph and it disappears.
If when the whistling is audible you turn on the AC on, the whistling disappears.
And no, not drowned out by fan speed which was set to 1.
Repeat testing verified it with my passenger too.
Also noticed setting the temp between high & low seemed inaccurate, i.e setting it to 25 degrees wit it being 19 degrees outside, still blew in cold air.
All this coupled with the noise emitted from AC in normal use, all smacks of poor quality components being used for the system or poor system deployment.

Okay, so I now have a report from an independent specialist qualified to work with EVs'. For the air con his written words on the report are:
"Unable to detect abnormal noise levels on the air conditioning itself, although the ventilation fan may be noisy as there is a noise which changes with fan speed. Would not expect the noise to be there with age and mileage of vehicle"

Whilst talking with him he indicated there may well be fan fault, quality or installation issue.

MG Waranty:
Guarantees repair replacement or adjustment, free of charge, by an Authorised Repairer, of any part which fails during the warranty period, as a result of a manufacturing or material defect.

 

[siteguru]

Someone previously got theirs fixed under warranty, and (as I recall) it was the level and/or type of lubrication for the AC compressor that was the issue.

 

[PristDean]

Someone previously got theirs fixed under warranty, and (as I recall) it was the level and/or type of lubrication for the AC compressor that was the issue.

Yes, i used that, in writing when I took my car into Waylands Newbury plus with MG Customer Services. The response despite this was... let's just say, very Smart and not very smart !

 

[Yandards]

Mine went in whilst I was away with work, as expected the answer was they all make a noise.

I don't think it's normal though despite 'the others we have in the yard making the same noise'. The AC pump is an electrically powered pump and there shouldn't be any metallic chirping noises from it.

Can hear it in the car at times and the previous EV (E208) had a slight vibration (more a rumble) that was just about audible when outside the car - so it's back to this not being a normal sound.

Got to get back to the dealer as they've cuffed off the undertray as expected but didn't check the sills or the manufacturing defect on the NSR door card.

In the middle of drafting an email and I've been digging into the AC system side of life as I'm convinced the 'chirping' AC pump noise isn't meant to sound like that at all, notably sitegurus video is about the noise level I would expect to hear. A quick search through youtube doesn't pull up any reviews of the car with anyone saying anything about noisy AC in operation either.
The pump part number I have on mine is 177313C03L produced in the 1st 1/6th of 2023 judging by the date details on the casing.
Interestingly on checking the underside of the bonnet the following sticker is present which defines both the refrigerant to be used, R-1234yf and an oil for the AC system, HS1. If you then check the owners manual, page 319 it only cites the R-1234yf and not the HS1.
It's a coincidence that a pump that sounds like it needs lubricating requires a specific lubricant that isn't listed in the owners manual.
If you do manage to persuade your dealer to do a re-gas then make sure they don't re-use the old stuff as there is no guarantee is has any lubrication in it.
Keep you posted if I get anywhere with this...

 

[Deleted member 10041]

There was a member that got his fixed with changing the oil, I wonder if they just actually added some

 

[PristDean]

Read this: A/C systems – why do they need the right compressor oil?

The amount of oil to be added to the compressor is specified by the compressor manufacturer. In addition to this you need to use the viscosity of oil recommended by the compressor manufacturer. If the compressor requires heavier weight oil, such as PAG 150, but PAG 46, which is a lighter weight, is used, the result could be noisy compressor operation and premature wear.

 

[Deleted member 10041]

Read this: A/C systems – why do they need the right compressor oil?

The amount of oil to be added to the compressor is specified by the compressor manufacturer. In addition to this you need to use the viscosity of oil recommended by the compressor manufacturer. If the compressor requires heavier weight oil, such as PAG 150, but PAG 46, which is a lighter weight, is used, the result could be noisy compressor operation and premature wear.

Sounds like they have put the wrong oil in some then, which is why the member that gots his changed no longer has an issue.

If true that is basics, putting the right stuff in, I wonder if other MGs use different oil and it's got mixed up

 

[PristDean]

Sounds like they have put the wrong oil in some then, which is why the member that gots his changed no longer has an issue.

If true that is basics, putting the right stuff in, I wonder if other MGs use different oil and it's got mixed up

Indeed, I have mine booked into a dealer next Thursday and I am going armed with this info. They indeed appear to have messed up with putting the correct viscosity oil into the compressor. As you say, an easy fix, they just need to re-gas with the correct oil.

 

[Richmorr]

I left a comment on the MG YouTube page showing the there cars a good wood. Had a reply saying really sorry please contact my customer service. I got excited until Gary Smart answered

“Thank you for contacting MG Motor UK Ltd. and I am sorry to learn that your vehicle is not meeting with your expectations.

I have listened to the video provided and I can confirm that this noise is quite common for this model.

Unfortunately, it is a noisy air conditioning system”.

Indeed, I have mine booked into a dealer next Thursday and I am going armed with this info. They indeed appear to have messed up with putting the correct viscosity oil into the compressor. As you say, an easy fix, they just need to re-gas with the correct oil.

I wonder how much it would cost just to take it to a local garage for it to be done can’t be that much

 

[Deleted member 10041]

I left a comment on the MG YouTube page showing the there cars a good wood. Had a reply saying really sorry please contact my customer service. I got excited until Gary Smart answered

“Thank you for contacting MG Motor UK Ltd. and I am sorry to learn that your vehicle is not meeting with your expectations.

I have listened to the video provided and I can confirm that this noise is quite common for this model.

Unfortunately, it is a noisy air conditioning system”.

He never fails to disappoint

 

[PristDean]

I wonder how much it would cost just to take it to a local garage for it to be done can’t be that much

I too have been in contact with Gary Smart. All he does is try to fob everybody off to avoid the repair costs of their failings.
For example, he told me the AC was "Just a characteristic of the car". The warped under "Is due to the shape of the car"
Let's just say. not so Smart eh!

So ignore MG customer services and try a different dealer with MG service staff, but go armed with all the info you can to prove the point, such as the info above.

A local garage should be a last resort, re-gas should only cost about £50 I believe, but... they may not want to touch a new car under warranty, so you may have to convince them. If they then play ball, tell MG you gave them one chance to repair, then send MG the bill.

 

[Richmorr]

I too have been in contact with Gary Smart. All he does is try to fob everybody off to avoid the repair costs of their failings.
For example, he told me the AC was "Just a characteristic of the car". The warped under "Is due to the shape of the car"
Let's just say. not so Smart eh!

So ignore MG customer services and try a different dealer with MG service staff, but go armed with all the info you can to prove the point, such as the info above.

A local garage should be a last resort, re-gas should only cost about £50 I believe, but... they may not want to touch a new car under warranty, so you may have to convince them. If they then play ball, tell MG you gave them one chance to repair, then send MG the bill.

Any public space I see going to leave a review on MG service and Gary smart. Out let’s like fully charge and electrified have large following and if there people seeing how bad they both are can only impact sales and paint a bad image of the company

 

[Ian Key]

Makes you wonder how many of MG's management have actually driven an MG or have one as a company car.