Mondeo sounds a bit easier than the Volvo at least, should be grateful for small mercies.
Took it out for a while in traffic in the afternoon heat and it clicked on and off and worked great for the whole trip. Which is a good sign.
Compressor doesn't seem to be cycling too much although it's certainly on more than off but that is no surprise in this weather. afaik the mondeo compressor won't operate if the pressure is too low.
Had arranged for the mechanic I use to check the refrigarent tomorrow. Any idea if it's possible to just check the amount? Or is the only option to get it vacced out and refilled?
You can check the pressure, at least - Halfords and the like sell gauges, and you don't need to use one of their top-up cylinders just to check the pressure. The latest ones they sell, have a handy little thing that you swivel around which shows you the acceptable range, given the current ambient. Not perfect, and something of a blunt tool, but would give you an idea.
The only connect to the low pressure side, though - the only Mondeo air-con I ever tinkered with was on a Mk II R reg, some years ago, so don't know whether your model definitely has a low-pressure port (some cars don't). But the connector should only fit on a low pressure connector, the size should be different for the valve on the high pressure side.
So long as it's not cycling quickly, and the vent temp is cold, and it's staying on, though - it may well be fine - good enough not to need any.
I think the pressure gauges are maybe around £15, though - and really only a blunt tool, really - when proper A/C guys - or more likely, these days, the automated trollery machines, they should be adding the correct weight of gas and lubricant to the system.
Some people are vehemently against the top-up kits - and I get their point - but if all you really need is a little gas adding, with care, and a pressure gauge, so long as you're sensible, they can be reasonably cost-effective at minor top-ups. I'll qualify that by saying, clearly that's inferior to a proper evacuation, holding a sustained vacuum for a good period, then adding the correct weight of gas and oil.
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