1993 Other Saturn Models car is overheating

1993 SATURN
190,000 MILES • 4 CYL • FWD • MANUAL
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TOO HOT SATURN
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the car overheats as soon as I stop. If I'm driving on the highway, the gauge goes between 1/2 & 3/4, driving in town it goes 3/4+... when I stop, the car will smoke & coolant bubbles out. everyone told me that this was because the thermostat was bad, so I replaced that and the sensor, but nothing has changed. the fan only comes on if the ac is on. what else could this be? and how do I fix it?
May 19, 2008 at 11:38 AM
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RASMATAZ
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the fan only comes on if the ac is on.

The radiator fan should come On by itself Check the fan relay, coolant temperature sensor/ or engine temperature gauge switch. Could also be the computer not activating the fan relay.
May 19, 2008 at 11:44 AM
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TOO HOT SATURN
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the relay is good & the sensor was already replaced. where is the engine temperature gauge switch? and is there anything else that it could be?
May 19, 2008 at 12:38 PM
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RASMATAZ
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For a 1.9L engine its on the rear of engine near the coolant outlet. I'd direct power to the radiator fan motor before I go to the switch.
May 19, 2008 at 3:58 PM
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