One more no A/C thread
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One more no A/C thread
Ok, my truck a/c only blows cold when it is not extremely hot out like early in the am and late in the evening, other than that 60-65 deg is all I get. My compressor clutch gap is good and compressor is cycling about every 5 sec. Cleaned coil 2 weeks ago, it wasnt bad at all. Put gauges on today and with outside temp at 90 i got 38 on the low side and 150 on the high side. Installed a heater core bypass not too long ago . Going to check the evap coil tommorrow. Is there anything else I,m missing and whats next? Vac system down and re charge?
Hotshot
Joined: Jan 2002
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From: La La Land
Costa's got it right.
38 and 150 looks to be too little R-134a, especially that 150 high-side.
Gauges are your best friend to get it right, and since you have them, you will.
Just don't add too much, either. You can over-charge pretty easily.
Pop
38 and 150 looks to be too little R-134a, especially that 150 high-side.
Gauges are your best friend to get it right, and since you have them, you will.
Just don't add too much, either. You can over-charge pretty easily.
Pop
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Tried adding freon too, It dosn't seem to want to take any. I let it cycly for a while then open up the low side and let it cycle a few times with valves open and almost no change in pressur on the low side or the high side.
Hotshot
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From: La La Land
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Posting Guru
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From: Boston, MA
my a/c didnt work until i fussed with the plugs on the compressor under the hood. i guess one shook itself loose...i figured id wiggle them around before slimming my shims down and voila!
i love when its the easy fix...
i love when its the easy fix...
Rather Be Floatin
Joined: Oct 2005
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From: Marble Falls, Tx.
When you jump the two wires together it will stop the compressor from cycling and force the compressor to run.
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OK jumped the low side switch and got the system to toke about 10 oz of freon over the course of about an hour and a half. I jumped the switch, let the system take some freon, plug the switch back in and let it cycle for a few min then repeat. Absolutly no change in either pressure. Still about 35 on the low side and 145-150 on the high side. And no change in temp coming from the vents still 60 ish (didnt have my temp gauge with me) Also took the fan out and hosed off the condensor coil off it wasnt that dirty.