weird aircon problem

[roverbeast75]

a couple of weeks ago my AC aux belt snapped & took the crankshaft oil seal with it. Today I put in a new oil seal & new AC aux belt.

However my air conditioning isn't blowing cold air anymore. Very weird because before the belt snapped a couple of weeks ago, the air conditioning worked as it should.

It must be noted that:

1. My 3 speed fan does not work, however I only use AC when driving atleast 50 mph. Even though the fan never really worked, ac worked fine while driving. Will be upgrading to 2 speed soon.

2. I changed the air compressor last year & also regassed AC last year.

3. ac compressor pulley turns fine, & no signs of immediate leaks around the compressor

4. I installed the Thermostat mod kit from DMGRS when I replaced the oil seal. I had been driving with an open thermostat for almost 3 years. does the mod kit impact the ac system?

I will check if the car needs regassing on monday but I regassed it exactly a year ago so very strange...

car is a CDT

any suggestions?

[T-Cut]

Maybe worth reading this threrad. It highlights a very common cause of refrigerant loss from diesel models. Click https://the75andztclub.co.uk/forum/s...d.php?t=305732


TC

[COLVERT]

Item 3.

You say the pulley works fine----Both parts of the pulley ??????

[roverbeast75]

Originally Posted by COLVERT

Item 3.

You say the pulley works fine----Both parts of the pulley ??????

Do u mean the clutch of the compressor aswell as the pulley itself?

If so, I have to still check if the clutch engages but the pulley itself turns fine

[marinabrian]

It's worth checking the wiring to the AC compresssor clutch hasn't been disturbed

Brian

[roverbeast75]

Originally Posted by COLVERT

Item 3.

You say the pulley works fine----Both parts of the pulley ??????

Compressor clutch engaged aswell

[SD1too]

Hi Jay; to answer your questions:

No, the thermostat will have no effect upon the air conditioning.

As the compressor clutch is engaging you must have some refrigerant gas present but perhaps insufficient to cool effectively in the current summer temperatures.

If you travel over 50 mph only occasionally then you may have lost gas due to infrequent use. It's unlikely to be erosion of a pipe (linked in post no. 2) as that would result in complete loss and a non-functional compressor clutch.

I recommend that you fit a new set of brushes to your 3 speed fan (from European Carbon Products Ltd). It makes diagnosis unnecessarily difficult without forced cooling. A two speed replacement is not an "upgrade" (needs resistor replacing and is noisier) but it is simpler.

Has your system always been recharged by a specialist according to weight?

Simon

[roverbeast75]

Originally Posted by SD1too

Hi Jay; to answer your questions:

No, the thermostat will have no effect upon the air conditioning.

As the compressor clutch is engaging you must have some refrigerant gas present but perhaps insufficient to cool effectively in the current summer temperatures.

If you travel over 50 mph only occasionally then you may have lost gas due to infrequent use. It's unlikely to be erosion of a pipe (linked in post no. 2) as that would result in complete loss and a non-functional compressor clutch.

I recommend that you fit a new set of brushes to your 3 speed fan (from European Carbon Products Ltd). It makes diagnosis unnecessarily difficult without forced cooling. A two speed replacement is not an "upgrade" (needs resistor replacing and is noisier) but it is simpler.

Has your system always been recharged by a specialist according to weight?

Simon

I think that it is because of infrequent use because Truth be told I barely used the AC throughout the year , more of a fresh air person and even now due to lockdown, exams , the seal , the car has been sitting on my driveway for months.

No idea if he does it by weight, i went to the ac refill place but it was closed today so better luck tomorrow

[roverbeast75]

Originally Posted by SD1too

Hi Jay; to answer your questions:

No, the thermostat will have no effect upon the air conditioning.

As the compressor clutch is engaging you must have some refrigerant gas present but perhaps insufficient to cool effectively in the current summer temperatures.

If you travel over 50 mph only occasionally then you may have lost gas due to infrequent use. It's unlikely to be erosion of a pipe (linked in post no. 2) as that would result in complete loss and a non-functional compressor clutch.

I recommend that you fit a new set of brushes to your 3 speed fan (from European Carbon Products Ltd). It makes diagnosis unnecessarily difficult without forced cooling. A two speed replacement is not an "upgrade" (needs resistor replacing and is noisier) but it is simpler.

Has your system always been recharged by a specialist according to weight?

Simon

Issue is resolved, aircon is ice cold again. Gas was low. to answer ur question, there was only 130 grams of gas left in the system. He filled it to 450 grams now.

[SD1too]

Thanks for the feedback Jay. Please bear in mind that to prevent this happening again you will need to use your air conditioning regularly, say once a month at least all the year round. To get the full benefit you might re-brush your 3 speed fan motor as well.

Simon