Cant Post

[oxon-nick]

Hi All,

 

The other day I was driving home in my Ford Galaxy when all of a sudden I heard a strange noise coming from what I believed to be around the gear box. It sounded like metal on metal grinding. It stopped as quikcly as it started and then the car was not used again for a day or so.

When taking the car out on its next drive it did not go 100meters and then conked out... Made a horrible noise in the process.

 

Please see my two videos below to hear the noise and on the second video I believe the device with the red ring around (Air conditioning Compressor?) it is what is stopping and causing the engine to stall (please correct me if I am wrong).

 

http://www.youtube.com/watch?v=boE3eMfUphg

 

http://www.youtube.com/watch?v=ZpCsA5SSun0

 

Any help greatfully received.

 

Many Thanks

 

Nick,

Edited November 18, 2013 by oxon-nick

[insanitybeard]

Looking at the red oxide colouring around the electromagnetic clutch for the air conditioning compressor (it is what you think it is), it looks like it has got hot and the compressor or clutch could indeed be the culprit, if it is in the process of seizing up or has seized the resulting drag it would place on the engine would probably be enough to stall it. It would probably make an awful noise as you describe whilst doing it. Does switching the air conditioning on and off whilst the engine is running have any affect? Does the air con still work? With the engine switched off, try turning the compressor pulley clutch plate (disc) on the outside end of the pulley (which should turn independently of the pulley) by hand- it should turn smoothly and with little resistance. Looking at the colouring of the clutch plate would say there's a good chance the clutch is knackered, though compressor failure isn't unusual.

Edited November 18, 2013 by insanitybeard

[oxon-nick]

Hello,

 

Just turned the car on and turned the aircon / heater off and then reved the engine which was fine (it would normally cut out at this point). I then took the car for a spin with the ac/heater off and all was perfectly fine.

 

Did notice before I switched the ac off that the display was showing stupidly high numbers and an error message of sorts...

 

How easy is it to replace these? I see the haynes book of lies places it at 4 spanners! :)

[insanitybeard]

If all is well with the air con off then it sounds like the electromagnetic clutch is still trying to do it's job in which case the compressor itself is at fault- either partially or completely seized. Replacement of the complete unit (assuming you are going to source a good secondhand unit with the clutch already fitted) isn't that difficult, assuming no major problems with access, but the air con system will require de-gassing before you can remove and replace it, and then subsequent re-gassing, a specialist job.

Edited November 18, 2013 by insanitybeard

[insanitybeard]

Having watched the video you posted I can now see that the engine ran ok until the electromagnetic clutch attempted to switch in the air con compressor- the compressor is seized and the clutch has got hot trying to turn the compressor over- hence the red iron oxide colouring on the clutch end plate/cover. You may be able to get the compressor rebuilt but possibly a complete secondhand unit is the easiest way to go. Still going to need to be de-gassed though.

Edited November 18, 2013 by insanitybeard

[oxon-nick]

Not a problem I will source a secondhand replacement for it. Thank you very much for your replies.

 

With regards to replacing the unit is it as simple as getting is degassed... Removing the old unit and attaching the new and then regassing?

 

Kind Regards

 

Nick,

[insanitybeard]

With regards to replacing the unit is it as simple as getting is degassed... Removing the old unit and attaching the new and then regassing?

 

Pretty much, just don't leave the pipes disconnected for too long to prevent moisture ingress into the system. If you can, try to ensure that the engineering numbers of any replacement unit you get match those on the builders' plate of the old unit to make sure you're getting the right part. Might also be worth renewing the o-rings where the pipes connect to the compressor too.

[chromedome]

Yes definitely replace any O rings.

 

There are two amounts of refrigerant listed on a sticker under the bonnet. It you have no vents in the roof above the second and third row of seats then you have single air con and so use the lower amount.

[gregers]

whereabouts are you nick,dunno what version galaxy you have as i have a compressor for a tdi minus its clutch plate.

[chromedome]

Would the compressor be suitable for my Galaxy. 2005 130PS?

[gregers]

took me a bit of time to find this,but i knew id written it done lol.

 

this is the code sd 7v16/7m3 820 803 a/ym2h 19d629 bb,

if it matches yours then i would say yyyyyyeeeepppp.