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1994 cadillac concours over heating both fans not on radiator was replaced just the other day. Please help?
Wiki User
∙ 14y ago
Could be a number of things. Bad water pump, stuck thermostat, bad fan thermal relay, clogged radiator, blown head gasket, just to name then most obvious. Take it back to whomever replaced the radiator to make sure they reconnected the electrical connectors to the fans. Many vehicles with electric radiator fans have a thermistor built into the radiator that tells the system when to come on and shut off. If the radiator was replaced with an aftermarket item and the replacement did not have the proper holes to screw the thermistors into you will have to have a modification made that will accomodate the thermistors or have the right OEM radiator installed. The thermistor on this car is located on the rear cylinder head just above the transaxle and the magnasteer unit facing the left fender (it's tight but it can be checked and replaced if you unscrew the egr valve and egr lines, about 5 minutes). I have my doubts that this is the problem however because when the thermistor is not functioning properly the fans automatically come on but better safe than sorry. Be sure to check the cooling fan relay under the hood. Otherwise have your ECM checked. If a new one cures it then good. If not, then take it in and get your $$$ back.
Wiki User
∙ 14y ago
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