AC Issue

[peedy17]

Hi all,

Got my 2007 XC90 re-gassed this time last year. It worked fine for a few weeks then stopped.
VIDA was showing really low pressure. Had it re-gassed again today and has been working perfectly.
Just been out to take a pressure reading so i can monitor over the coming weeks to see if its dropping.

It was showing 607kpa and the AC relay not engaged. No matter what settings i selected, i couldn't get the relay to engage. I tried to turn on the activation and nothing happened.

I unplugged the connector from the pressure sensor and seen the readout shoot up real high. Plugged it back in and everything is working fine with a reading of around 1500kpa

Does this reading seem normal? Why would unplugging the pressure sensor cause it to start working again? Should i be thinking about replacing the sensor?

I checked around best I could with a UV torch but couldn't see any sign of leaks. Surely they would have said today if the system was still full?

[Clan]

Originally Posted by peedy17

Hi all,

Got my 2007 XC90 re-gassed this time last year. It worked fine for a few weeks then stopped.
VIDA was showing really low pressure. Had it re-gassed again today and has been working perfectly.
Just been out to take a pressure reading so i can monitor over the coming weeks to see if its dropping.

It was showing 607kpa and the AC relay not engaged. No matter what settings i selected, i couldn't get the relay to engage. I tried to turn on the activation and nothing happened.

I unplugged the connector from the pressure sensor and seen the readout shoot up real high. Plugged it back in and everything is working fine with a reading of around 1500kpa

Does this reading seem normal? Why would unplugging the pressure sensor cause it to start working again? Should i be thinking about replacing the sensor?

I checked around best I could with a UV torch but couldn't see any sign of leaks. Surely they would have said today if the system was still full?

dirty connector ? Or the jolt moved something in the switch an got it working again.. try a new pressure switch/sensor...

[peedy17]

Ok thanks. I'm assuming I'll need a regas after removing the pressure switch?