2000 996 Carrera 2 coupe 6 speed - Air conditioning does not work

[Philip54]

When I turn on the air conditioning, everything seems normal, the compressor appears to be working and the fan goes on, but only warm air comes out of the vents.

Where should I start to figure out what is wrong? I have Durametric , if that can help.

Thanks

[judgejon]

Needs refrigerant.  You might have a leak in system.  Pressure check?

[Philip54]

On ‎5‎/‎5‎/‎2020 at 7:30 PM, judgejon said:

Needs refrigerant.  You might have a leak in system.  Pressure check?

 

The refrigerant was low.  We put more refrigerant in the system and now the A/C is working again.  Next week we'll try to find the leak.

Thanks

[sprout99]

Mine is leaking from the damaged suction pipe 

Next to front jacking point. 

 

Is swapping pipe easy? 

 

Thanks Ian 

[DBJoe996]

14 hours ago, sprout99 said:

Mine is leaking from the damaged suction pipe 

Next to front jacking point. 

 

Is swapping pipe easy? 

 

Thanks Ian 

No, it is not easy.  First step is to vacuum/remove all remaining refrigerant. This requires a special machine. Second, you will need to remove the  front bumper, wheel, wheel liner and underbody panels.  You could have an AC shop do the first step, then DIY the pipe replacement, then go back to the AC  shop for a refrigerant recharge.

[sprout99]

Hi. 

 

The system has emptied itself through a hole in pipe caused by a bad mechanic jacking it up sometime previous to me owning it. 

 

I noticed it had a wet patch on the pipe a while back when I had it on a lift sorting out the exhaust seams. 

 

But it dumped a load of PAG oil with green dye on driveway last week. 

 

I dont believe I need bumper off just wheel and arch liner as the pipe union is in scuttle panel area not near the condensers

 

Just don't know if I need to remove the evap cannister and fuel filler. I think defo the first part. 

 

 

[sprout99]

Pipe done, 

 

Evap canister and fuel filler needs to be removed. The smaller AC pipe needs to be disconnected and It's I fiddle to get pipe out. 

 

Found a split o ring but had planned to replace anyway. 

 

Took about 3 hours in total.

 

Changing a window regulator is way more horrible to do as a comparison 

Edited May 23, 2020 by sprout99

[Philip54]

Per my previous post in this thread, after adding refrigerant, the A/C worked normally.  We then looked for leaks using sniffers, but we could not find any.   After 3 months and a few hundred miles, however, the A/C stopped working again.  Also, on the following day the A/C fan stopped working.  If I press ‘+’ or ‘-‘, on the A/C console, I can see the fan speed indicator going up or down, but I cannot hear the noise of the fan.  It is dead.

I understand that the refrigerant leak may be larger than we had hoped and all the refrigerant may have leaked out, but why the sniffers were not able to detect a large leak? Is the A/C fan failure in any way related to the refrigerant leak?

Thanks