chalupa Posted June 25, 2011 Share Posted June 25, 2011 Last question on my Red Dot system...... should I insulate, tar wrap or anything else my aluminum block expansion valve on my CH ?Reason I ask is because I my air temp is only 59 on recirc.( 90's outside ) and my freon temp is 35 so I'm loosing cool somewhere. I've checked the heater valves, closed.I suspect she's scavenging hot air from the engine room through the piping outlets in the firewall and I'll address that but I don't think that's my guy.Help? Quote Link to comment https://www.bigmacktrucks.com/topic/19524-mack-ch-ac-question/ Share on other sites More sharing options...
Rob Posted June 25, 2011 Share Posted June 25, 2011 Last question on my Red Dot system...... should I insulate, tar wrap or anything else my aluminum block expansion valve on my CH ?Reason I ask is because I my air temp is only 59 on recirc.( 90's outside ) and my freon temp is 35 so I'm loosing cool somewhere. I've checked the heater valves, closed.I suspect she's scavenging hot air from the engine room through the piping outlets in the firewall and I'll address that but I don't think that's my guy.Help?It will not hurt to wrap the return, (suction) line to the compressor in any fashion. This is the cold line leaving the evaporator coil. Make certain your condensor coil in front of the radiator but behind the CAC is clean. Take a garden hose from the backside and pressure wash everything clean best you can. This will help tremendously.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/19524-mack-ch-ac-question/#findComment-80347 Share on other sites More sharing options...
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