Air Conditioning

Rachelkgr · May 17, 2014

2001 DHSE

Ok, so last year, I had a pre 2001 air con radiator retro fitted in to my 2001 DHSW (which had the hard to get tiny air con rad), all the pipes were swopped out. The air con worked ice cold (after a few sqeeks from the clutch under the bonnet!!, she had not been used for a few years).

So I activated it today, and although a tiny bit colder than the outside air, she is not cooling the cabin.

I pulled all the relays and fuses (which caused a book symbol), had to reset system with Hawkeye to get fans running a gain. Actually no other faults.

Other than checking that the gas hasn't leaked out!!!! Is there anything else I can easily check?????

Thank you, as always!!!

P38Penguin · May 17, 2014

When the aricon is on check that the fans at the front are working, other than that you'll need to get a leak test with uv dye.

mick

Saint.V8 · May 17, 2014

Trust the compressor clutch is engaging?

Lack of engagment is either no gas pressure, mechanical failure or electrical failure!

tes · May 17, 2014

Have a problem with my air conditioning. Checked all the fuses and moved relays around, clutch on compressor will not engage. Am I right in thinking it might be out of gas or could it be something else more involved
Looking forward to hearing from someone please

Rachelkgr · May 17, 2014

P38Penguin said:
When the aricon is on check that the fans at the front are working, other than that you'll need to get a leak test with uv dye.

mick

Ok, so with the Aircon on! The front two electric fans are NOT spinning, however I understood, it had to be damn hot to get those guys to work????????

How do I know if the clutch is engaging????

tes · May 17, 2014

The clutch clicks as it goes In and out also the revs drop down a bit

Datatek · May 17, 2014

P38Penguin said:
When the aricon is on check that the fans at the front are working, other than that you'll need to get a leak test with uv dye.

mick

Fans rarely run on mine unless the weather is very hot and the car is idling, the fans also do the engine cooling on mine.

tes said:
Have a problem with my air conditioning. Checked all the fuses and moved relays around, clutch on compressor will not engage. Am I right in thinking it might be out of gas or could it be something else more involved
Looking forward to hearing from someone please

Lack of gas is most likely.

Datatek · May 17, 2014

Rachelkgr said:
2001 DHSE

Ok, so last year, I had a pre 2001 air con radiator retro fitted in to my 2001 DHSW (which had the hard to get tiny air con rad), all the pipes were swopped out. The air con worked ice cold (after a few sqeeks from the clutch under the bonnet!!, she had not been used for a few years).

So I activated it today, and although a tiny bit colder than the outside air, she is not cooling the cabin.

I pulled all the relays and fuses (which caused a book symbol), had to reset system with Hawkeye to get fans running a gain. Actually no other faults.

Other than checking that the gas hasn't leaked out!!!! Is there anything else I can easily check?????

Thank you, as always!!!

Probably gas but could be the compressor clutch. Better to always leave the aircon on, it's good for drying the interior and keeping the BECM dry and the aircon will be more reliable too.

Rachelkgr · May 17, 2014

Datatek said:
Probably gas but could be the compressor clutch. Better to always leave the aircon on, it's good for drying the interior and keeping the BECM dry and the aircon will be more reliable too.

Thanks Keith, can I check the clutch in any way??

mickwall · May 17, 2014

You can normally get the gas checked for free at quick fit and the like so maybe worth starting there?

Stavros1967 · May 17, 2014

Great thread, need to do mine too!

jacckk · May 17, 2014

Rachelkgr said:
Thanks Keith, can I check the clutch in any way??

Have you looked at it and checked if it is engaging? If you look at it the pulley is always spinning but the plate at the front will not be spinning if the clutch is disengaged. It should cycle on and off occasionally if it's working.

If it has a problem you should get the book symbol on your HEVAC and a fault of "compressor clutch control fault" or wtte.

Rachelkgr · May 18, 2014

jacckk said:
Have you looked at it and checked if it is engaging? If you look at it the pulley is always spinning but the plate at the front will not be spinning if the clutch is disengaged. It should cycle on and off occasionally if it's working.

If it has a problem you should get the book symbol on your HEVAC and a fault of "compressor clutch control fault" or wtte.

Thanks, will try to see if it's spinning today.

Datatek · May 18, 2014

Rachelkgr said:
Thanks Keith, can I check the clutch in any way??

With great care and a torch, if you know what you are looking for, you can see the clutch engage and the compressor turning.
Personally I'd go get a gas check first as that is the easiest and most likely option.

Datatek · May 18, 2014

jacckk said:
Have you looked at it and checked if it is engaging? If you look at it the pulley is always spinning but the plate at the front will not be spinning if the clutch is disengaged. It should cycle on and off occasionally if it's working.

If it has a problem you should get the book symbol on your HEVAC and a fault of "compressor clutch control fault" or wtte.

That depends on year I think, no book symbol on mine if the compressor doesn't engage.

wammers · May 18, 2014

Datatek said:
That depends on year I think, no book symbol on mine if the compressor doesn't engage.

If there is low gas you will get a fault on diag something like compressor control open circuit. But no book symbol.

jacckk · May 18, 2014

wammers said:
If there is low gas you will get a fault on diag something like compressor control open circuit. But no book symbol.

Ah right, my mistake. My 1995 gives that fault at the minute just because it has no gas.

Rachelkgr · May 18, 2014

OK, so clutch looks to be spinning, definite revs change for a second as I pop the air con on and off also. No book symbol, but as stated above, I have a late model so wouldn't show one. I am guessing all the gas has leaked out! Will get it checked! My hawkeye shows no errors, but it's not clever enough, I am guessing to show something like low gas etc.

Datatek · May 18, 2014

jacckk said:
Ah right, my mistake. My 1995 gives that fault at the minute just because it has no gas.

Yep, early ones do. Later ones the HEVAC just operates a relay not the compressor direct.

Datatek · May 18, 2014

wammers said:
If there is low gas you will get a fault on diag something like compressor control open circuit. But no book symbol.

Exactly so

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