Cooling fan not turning on when at temperature

2001 CHRYSLER PT CRUISER
98,000 MILES
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SANTIJ
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The car started overheating. Replaced radiator, water pump, thermostat, heater core and replaced the head gasket. Car runs fine but at temperature I have noticed that my cooling fans are not coming on. Replaced both high and low relays , engine coolant temp. sensor, checked fan motor with direct power checked ok. Fan comes on with air condition but not without. Checked wiring , all wires fine, need HELP?
Nov 14, 2011 at 12:19 AM
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RASMATAZ
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Sounds like its coming from the computer controlled circuit of the fan relays-
Nov 14, 2011 at 12:34 AM