Air conditioning not working

[Brett robertson]

My 2010 Ford Fusion 1.4 tdci air conditioning won’t engage the switch lights up but the ac pump don’t engage I have replaced the fuse and relay but it’s not rectified the issue I have also bypassed the relay to check the pump and that works I have also taken the relay apart and forced the connection and that powers the pump up too but unless I force the connection or bypass the hole system it will not power up in the way it’s meant to can anyone help please 

[unofix]

If the gas pressure is low than the AC will not operate to prevent damage to the compressor.

[Brett robertson]

I didn’t that of that I will get it checked and update 

[Jezza73]

Hi, sorry to jump on someone else’s thread, but can anyone tell me if there are common failure points on the fusion AC system?

I have correct gas pressure, the clutch engages but there is warm air through the vents and the pipes from the evaporator  are very very hot. 
 

I don’t really want to start playing parts darts. 
 

Thanks. 
 

[unofix]

What is the high side and low side gas pressure readings ?

[Jacksbark]

Hello, I bought well used but nice overall condition 2007 1.4l diesel tdci with about 130k miles and 5-speed manual back in June, just in time for the incoming very hot UK summer. A/C wasn’t cooling, had the system purged and recharged. Did that twice over a month. Each time ‘cooking’ was minimal and gradually disappeared completely. Finally found a garage that knew the A/C system, did proper dye test for leaks and found the condenser was ‘porous’! In with a new condenser and recharge - cost all in about £390. I have never had as cold an A/C in any car anywhere in the world I’ve driven. Money we’ll spent! The garage reckoned that’s over the years of winters of road salt the condenser just got rotted out. I agree. So, point is, don’t be shy about really digging into the issue - yes, you may get lucky and find a minor control/regulating component replacement issue, but with a fifteen year old car like mine it’s just a likely to be a more significant major component that’s ‘given up’. I’m very glad I fixed mine - it’s a ‘keeper’!

 

[StephenFord]

33 minutes ago, Jacksbark said:

... but with a fifteen year old car like mine it’s just a likely to be a more significant major component that’s ‘given up’. I’m very glad I fixed mine - it’s a ‘keeper’!

Expect the compressor to also give you trouble at some stage, but a used one is only about £20 on eBay...

[welshdave]

has anyone got any details of wiring diagram. my compressor is not coming in but cannot find much info on the wiring side of things

[unofix]

3 hours ago, welshdave said:

my compressor is not coming in but cannot find much info on the wiring side of things

When was the system last re-gassed ?

the compressor won't run if the gas pressure is low.

[StephenFord]

8 hours ago, unofix said:

When was the system last re-gassed ?

the compressor won't run if the gas pressure is low.

Shall I give out my KwikFit recommendation now? LOL If you get an A/C recharge, and it doesn't work, you get a full refund. Of course you can seek out any other garage that offers the same deal...