2006 T600/ CAT C15
Where do I begin? Last year replaced compressor, dryer, condenser, fan override switch and wire harness to it, expansion valve, A/C and heater climate console( inside cab), A/C blower(on firewall), recharged the system and all worked fine. This is what happens now: as I idle on lowest RPMs A/C blows out 52-55F, as I increase RPMS the temp in the vents rises up to 62F but as travel down the road, the vents blow out air at 70-75F. I stop at a traffic light and the temp drops down to 52-55F again, start moving - it rises up and so forth and so on. Tested the system twice already, the compessor builds up good pressure, no leaks in the system. Replaced the freeze switch(inside the box on firewall where the blower is) - problem remained! Yesterday replaced pressure switch(located by the condenser coil) - problem remained! I am at a loss! Please help!
A/C works on idle but not on high RPMs
Discussion in 'Kenworth Forum' started by Vadimpel, Jun 1, 2015.
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