AC not very cold
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Mountain Pass
Joined: Jun 2024
Posts: 163
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AC not very cold
For 1993 F250... I figured the charge must be low so I bought a can at the parts store with the gauge on it. With the controls on max, what I found was that it didn't exactly look low, but it cycled on/off every 3 seconds or so and covered the whole green range of the gauge, like all the way to the top, then cycled off and quickly dropped to the bottom, repeat. Probably obvious, but my understanding of how these AC systems work is pretty limited. Any thoughts?
i ain't rite
Joined: Mar 2005
Posts: 65,450
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From: Marlboro Mental Hospital.
the gauge on a can is useless.
if it is still cycling, it may be low........or pressure too high. only way to know is with a manifold set to see both high AND low pressures.
if it is still cycling, it may be low........or pressure too high. only way to know is with a manifold set to see both high AND low pressures.
FTE Community Team
Joined: Jan 2019
Posts: 10,717
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I have some luck with the little low-pressure gauge on the can, but that only goes so far, and isn't very accurate.
@tjc transport is right: Need to see both sides to do much diagnosis and to get the pressures right.
@tjc transport is right: Need to see both sides to do much diagnosis and to get the pressures right.
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golfboy17
Explorer, Sport Trac, Mountaineer & Aviator
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Aug 11, 2010 03:45 PM
