Air Conditioning Problem

gsxr750

if it does not turn on at all then it needs a recharge, just buy the recharge kit at auto zone with the gauge built in. Replace until pressure is in the safe zone. If you get the compressor switch constantly kicking in ( on off , on off) after recharge then you have to much freon in it and use a small metal screw driver to release a little pressure at a time until compressor switch or clutch stays constanltly on.

You may have to do this a few times as it may be erratic until every thing settles in from the high side to the low side, due to charging from the low side.

Last year moving to vegas I had problems with my sentra and instead of me screwing around with it I took it to pep boys and they flushed the system, recharged it and checked it for only $120 with a year guarantee. The car as been fine every since.

Just watch out how they put the z up on a lift

MattP725

This actually isn't true... my friend is an HVAC specialist and it is the opposite... it could be low if the compressor is constantly running. Eventually it might freeze up and stall but it would be a while before that happened. Usually they quit on the home AC systems because they are never shut off due to not reaching temp.

Might just be a clutch switch, might be a panel, might even be the compressor but usually you get some symptoms of that (burning smell, noise, etc). As mentioned the systems are expensive unfortunately so outside of the small checks you will ultimately have to suck it up. Even if it is just the line set that is leaking, I believe you need special tools to properly oil and bleed the system, not just a recharge kit.

vividracing

Correct. If you intend on PROPERLY working on any A/C system, you need several specialized tools. The biggest one is the system used to vacuum and fill/charge the A/C with freon. In order for the A/C to work, you need to vacuum all of the old freon and moisture from the system before recharging. Also, there's special wrenches for the lines as well as other things you need. This is why I haven't touched an A/C system since leaving auto tech school. The cost of the tools doesn't justify itself when I have 1 or 2 A/C repairs every couple years. I'm sure we have the equipment to do it here in the shop, but I haven't had any A/C issues since working here.

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