2000 model Chevy pickup 5.3 liter. Compressor Cycles on for 2 or 3 seconds but won't stay on. I can feel the line getting cool so I don't think it's low of freon. Suggestions?
2000 model Chevy pickup 5.3 liter. Compressor Cycles on for 2 or 3 seconds but won't stay on. I can feel the line getting cool so I don't think it's low of freon. Suggestions?
You're pretty much stuck without a set of gauges. It is most likely low on refrigerant, but you need gauges to confirm that.
Most likely low refrigerant. Compressor fires up, lowers high side pressure immediately, pressure switch shuts off compressor. Repeat as required.
Thanx for the info, can I hit it with a can from advoreillyzone?
You can try that but you're really better off with a proper gauge set* and $5 cans of 134a from the grocery store. You'll probably find that it's leaking too fast for top offs to be economical, the leak (an O ring or loose connection if you're lucky) must be found (either with dye and a blacklight or an electronic sniffer tool) and repaired, and then the system vacuumed down (air and moisture in the system=BAD) and charged with the proper charge weight and some make up oil. Also, leak sealer products don't work very often.
AC work isn't very hard, but the tools (gauge set, vacuum pump) and basic knowledge on using them is mandatory.
*Adding refrigerant to an unknown quantity inside is best done while monitoring the high side pressure (not the low side, which is what those really expensive for what you're getting can and a gauge deals are monitoring), the charge level needs to within an ounce or so of spec or the compressor (the expensive part) won't last.
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