Aircon not kicking in! Poss engine swap cause?

**Liddo** · Friday 30th May 2014, 21:02

My aircon isn't working. I'm not sure it was working before I had the engine replaced in my V70 either, but you can't hear it kicking in. I took it to Kwik Fit today for an MOT and re-gas. The guy said it's full to the brim with gas now, there's no leaks, but the compressor doesn't seem to be kicking in. I've checked the fuses, and the connection to the pump, and all is ok.
What else do I need to check?? Could there be "other" connections loose anywhere??

Cheers

**MoleT-5R** · Friday 30th May 2014, 21:21

silly question I know, but is it plugged in and the earth ok, clutch on it is electrical if it's anything like the 850/v70 p1 ones

**Harvey** · Friday 30th May 2014, 21:38

Are the wires on the pressure switch still fitted ?.

**stephenevans99** · Friday 30th May 2014, 21:38

Pressure switch connected? Funnily enough though, I can't recall seeing a low pressure switch on mine.

**Liddo** · Friday 30th May 2014, 21:53

Cheers chaps and errrrrrrrrrrrr, WTF is the switch

**Harvey** · Friday 30th May 2014, 22:33

Number 11 in photo looks like the pressure switch.

http://www.volvopartswebstore.com/sh...ssembly=241852

**stephenevans99** · Friday 30th May 2014, 23:03

Originally Posted by Harvey

Number 11 in photo looks like the pressure switch.

http://www.volvopartswebstore.com/sh...ssembly=241852

That's why I've never seen it lol

**Liddo** · Saturday 31st May 2014, 09:41

Cheers Harvey, do I get to it from below or on top?? Wonder why it'd need to be unplugged for an engine swap??
Will take a look today

**Harvey** · Saturday 31st May 2014, 10:30

I would think you could se it only from above as it's right under the drivers side headlight unit ?.

**Liddo** · Saturday 31st May 2014, 10:58

Originally Posted by Harvey

I would think you could se it only from above as it's right under the drivers side headlight unit ?.

Ok mate, cheers, will check it in a bit

**Liddo** · Saturday 31st May 2014, 17:09

Nope, can't see anything or any unplugged bits �� Will jack it up and look from underneath.
Anyone got any photos of where I should be looking??

**Liddo** · Tuesday 3rd June 2014, 10:11

Well, i still cant find anything that looks like a switch! This is a pic from behind my drivers headlight

This is a pic of "something" I found near the washer filler! Should it be plugged into something??

**LeeT5** · Tuesday 3rd June 2014, 10:57

The switch in the schematic that Harvey posted sits on top of the dryer (of which there are two types). I believe it changed on the facelift models.
It is indeed a low pressure switch and is a biatch to get to. I thinks it's possible to access with the Fan cowling removed otherwise you'll need to remove the front bumper.
Location is tight up against the left hand side (as you face the car) of the 'Rad pack', below the O/S/F intercooler hose.

**Liddo** · Tuesday 3rd June 2014, 11:04

Originally Posted by Liddo

Well, i still cant find anything that looks like a switch! This is a pic from behind my drivers headlight

This is a pic of "something" I found near the washer filler! Should it be plugged into something??

LOL! Cheers Steve......now, why the F would the be disconnected

**Liddo** · Tuesday 3rd June 2014, 11:05

Originally Posted by LeeT5

The switch in the schematic that Harvey posted sits on top of the dryer (of which there are two types). I believe it changed on the facelift models.
It is indeed a low pressure switch and is a biatch to get to. I thinks it's possible to access with the Fan cowling removed otherwise you'll need to remove the front bumper.
Location is tight up against the left hand side (as you face the car) of the 'Rad pack', below the O/S/F intercooler hose.

Cheers Lee,

So I doubt that would of been touched when the engine was swapped, as the rads werent moved. They unbolted the subframe and dropped it down!

Hmmmmmm

**LeeT5** · Tuesday 3rd June 2014, 12:51

it is a common failure for the compressor clutch to fail!

If the clutch was buggered then you wouldn't know it, because it will just free wheel.

Heres a good video explaining how it works and why it fails:

http://www.youtube.com/watch?v=2CBeTPVRN80

I strongly advise you don't do the bodged repair thou.