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Old 06-07-2018   #1
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Regassing the air con of a 2016 Fiat 500L multijet

Can I have some advice please.

I took my 2016 Fiat 500L Lounge 1.6 multijet to top the refrigerant for the air con/climate control to Halfords today - special offer £40.

The tehnician could only identify the high pressure port but couldn't find the low pressure one and abandoned the task

Does any body know where it is please?

Thank you
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Old 06-07-2018   #2
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Re: Regassing the air con of a 2016 Fiat 500L multijet

Halfords or Halfords autocenter
If normal Halfords if personally avoid them doing just a top up on your Aircon
For the extra £8 or so it costs to get it done properly and that's having the system vacuumed to remove old gas moisture ect
Then refilled with fresh refrigerant and new oil to lubricate the system
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Old 07-07-2018   #3
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Re: Regassing the air con of a 2016 Fiat 500L multijet

Quote Originally Posted by chris3234 View Post
Halfords or Halfords autocenter
If normal Halfords if personally avoid them doing just a top up on your Aircon
For the extra £8 or so it costs to get it done properly and that's having the system vacuumed to remove old gas moisture ect
Then refilled with fresh refrigerant and new oil to lubricate the system
All vehicle air conditioners are a fully sealed enclosed system there is absolutely no chance of moisture being in the system if it hasn't been opened due to a malfunction etc .
One of the leading reasons for a drop in aircon performance is over oiling the system Ive come across it many times and to clean a system out completely does take alot of time ,air conditioning servicing is a bit of a con in the automotive world if its working why fix it sure clean out the condensor /evaporator fins but as for the gas/oil internal side if it works thats all thats needed to know
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Old 07-07-2018   #4
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Re: Regassing the air con of a 2016 Fiat 500L multijet

If it a totally sealed system how do most systems loose pressure after several years?
If gas can leak out moisture and air can also get in
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Old 07-07-2018   #5
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Re: Regassing the air con of a 2016 Fiat 500L multijet

@EliG

As Chris says, get a proper service with vacuum out and refill with gas and oil.
99% of automotive aircon systems are not hermetically sealed because of the compressor shaft seals. Most older ones had a dryer in the circuit to absorb moisture. The only fully hermetically sealed systems are the latest electrically driven ones and the odd and rare older system that had a magnetic coupling on the compressor.
Nearly forgot,
The LP port is tucked down behind the air filter box.

https://www.carcarekiosk.com/video/2...recharge_freon


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Last edited by g8rpi; 07-07-2018 at 16:54.
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Old 07-07-2018   #6
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Re: Regassing the air con of a 2016 Fiat 500L multijet

Thank you all for taking the time and trouble to reply.
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Old 27-07-2018   #7
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Re: Regassing the air con of a 2016 Fiat 500L multijet

Quote Originally Posted by adlarplant View Post
All vehicle air conditioners are a fully sealed enclosed system there is absolutely no chance of moisture being in the system if it hasn't been opened due to a malfunction etc .
Kinda right, if there is any pressure in he system above ambiant external air pressure, then the pressure gradient is such that no air or moisture will be able to get in from outside as the gas inside is trying to push its way out.

If the gas has all leaked out and the pressure inside he system is the same as external ambiant air pressure then yes moisture and air can get in.
Most likely you’d need a big hole in a pipe someone, or if you drive up and down mountains a lot the constant changes in pressure would work some air and moisture into the system.

A lot of systems are designed to work with a high internal pressure pushing joints out and creating a tight seal, if the pressure drops to a certain level it can let all the joints open up, especially where o-rings have become hard and compressed.
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