My 52 reg 1.8 TDCi Focus has been sat unused for a month while I've been on
Having driven it today for the first time since, it seems the Aircon isnt
working at all.
i.e the blower works, the Aircon light comes on with the switch, but no cold
Selecting re-circ doesnt make any difference.
Its been very cold around here in the last few weeks - not sure if this may
be a factor.
Are there any DIY actions I can take, or am I off to see the Aircon man??
The A/C won't work if the ambient is 4 deg C or less.
Can you hear the clunk of the A/C compressor electric clutch engaging? (This
won't happen if the low pressure switch has opened due to loss of gas.) If
not, check the fuse.
If the clutch is not engaging, and you feel confident in your ability to do
so, next step would be to *briefly* bridge the low pressure switch
connector. If the clutch then engages, it's likely there is no gas in the
system. Caveat: do no run like this for more than a few seconds or the
compressor will be destroyed!
Have you had the car for some time? If so, has the A/C ever been regassed?
Best bet is that you will indeed need a trip to the Aircon man.
Chris - Forgot to say:
The usual "clunk" as I press the button is definitely absent.
Now I think back, the aircon had been losing its edge (i.e not as cold) in
recent weeks before it failed altogether.
Car is now at 100k, and I tend to use the aircon most of the time to keep it
healthy. Never regassed (yet).
Ah - but all is still not well....
- Fat rubber pipe was replaced and system vac'd and recharged - now holds
- But the aircon is now only barely cool - selecting recirc feels to give
better results (or just more flow?) - but still not the icy blast as before.
- The characteristc "clunk" when the aircon switch is pressed is absent
(albeit the green light comes on ok)
- Flow with the re-circ button pressed is fine, but flow on "External" is
very low - like something is blocked.
- Now I think about it flow has been dropping off for a while. Blower sounds
a little noisy too.
- Pollen filten was changed a couple of months back.
Any more clues Tim?
You need to have the system pressure tested again to make sure it has a full
charge, and check what the HP and LP sides are doing, also monitor the
compressor clutch and condensor fan operation.
Only after that check the heater unit.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.