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Miscellaneous Automotive
Car Performance & Repair
Check your COOLANT/ANTIFREEZE often
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<blockquote data-quote="TrickyTransam" data-source="post: 3672356" data-attributes="member: 583599"><p>EH?</p><p></p><p>The AC system is independant of your engine coolant system. (Unless you drive a Ford and the condenser is integrated into the radiator)</p><p></p><p>Low radiator coolant should have no effect on AC operation other than overriding the secondary AC fan, if equipped.</p><p></p><p>The Cycling of the AC compressor is normal, unless it's doing a constant cyclic action. Constant cycling generally means too high of AC line pressure - meaning you overfilled your R134A refrigerant, and the BCM is not allowing the compressor to kick in so your AC lines don't blow up in your face.</p><p></p><p>If you had your AC on, and your compressor cycled for about 2 seconds then shut off for a while, you may have Low refrigerant.</p><p></p><p>The only way it would affect your AC performance is if the radiator got SO hot that it couldn't cool the refrigerant in the condenser - which is in Front of the radiator.</p><p></p><p>By then your baking head gaskets, intake gaskets..etc etc.</p><p></p><p>Use Prestone All Make All models. Drain and Flush that DexCool Crap from your radiator as soon as you get it home. It's just trouble for all of your seals.</p><p></p><p>S Trucks have always been the Economy version of Gm's truck lineup.</p><p></p><p>Just keep the coolant flushed.... because if your heater core goes bad, it's about a $800 job to replace it.</p></blockquote><p></p>
[QUOTE="TrickyTransam, post: 3672356, member: 583599"] EH? The AC system is independant of your engine coolant system. (Unless you drive a Ford and the condenser is integrated into the radiator) Low radiator coolant should have no effect on AC operation other than overriding the secondary AC fan, if equipped. The Cycling of the AC compressor is normal, unless it's doing a constant cyclic action. Constant cycling generally means too high of AC line pressure - meaning you overfilled your R134A refrigerant, and the BCM is not allowing the compressor to kick in so your AC lines don't blow up in your face. If you had your AC on, and your compressor cycled for about 2 seconds then shut off for a while, you may have Low refrigerant. The only way it would affect your AC performance is if the radiator got SO hot that it couldn't cool the refrigerant in the condenser - which is in Front of the radiator. By then your baking head gaskets, intake gaskets..etc etc. Use Prestone All Make All models. Drain and Flush that DexCool Crap from your radiator as soon as you get it home. It's just trouble for all of your seals. S Trucks have always been the Economy version of Gm's truck lineup. Just keep the coolant flushed.... because if your heater core goes bad, it's about a $800 job to replace it. [/QUOTE]
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Check your COOLANT/ANTIFREEZE often
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