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1993 Other Saturn Models car is overheating

Tiny
TOO HOT SATURN
  • MEMBER
  • 1993 SATURN
  • 4 CYL
  • FWD
  • MANUAL
  • 190,000 MILES
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?
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Monday, May 19th, 2008 AT 11:38 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Monday, May 19th, 2008 AT 11:44 AM
Tiny
TOO HOT SATURN
  • MEMBER
  • 2 POSTS
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?
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Monday, May 19th, 2008 AT 12:38 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Monday, May 19th, 2008 AT 3:58 PM

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