overheating
#1
overheating
hi am new to this site.i have own at least 12 volvos over the years.this one has me confused.s70 had blown head gasket. i replace heater core,waterpump.radiator.thermostat ,coolant recovery tank and cap.rebuild cyl head.enginruns cold on highway but over pressurize in traffic ,why,when does my fans turn on and off
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