Question about 1993 Saturn SL2

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2000 Saturn SL2 this month I replaced radiator, water pump, thermastat and it keeps over heating. The temperature gauge does not raise past 1/4 (normal) the overflow container is full at a 50/50 mix. the idle is a little high and the vacumn hose is fine. Any guesses?

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  • Devon Sacco
    Devon Sacco May 11, 2010

    Are you losing any coolant?

    When the engine is running, are air bubbles going into the overflow container?

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  • Master
  • 474 Answers

First determine if the car is actualy getting hot.dont trust the gauge or fan for these are controled by a temp sensor, if the sensor went bad it will tell you its hot. the other thing it might be is a air bubble trapped in the system

Posted on Oct 04, 2009

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My 1993 sl2 saturn its over heating i already change termostat and replace anti freese they gave me the green one so i mix it with water bt it still over heating the fan works only when i put on the a/c...


It could be the water pump. To check this:
  • Make sure the engine is not hot and open up the radiator cap.
  • Turn on the car and let it idle with the cap off.
  • Allow the car to warm up.
  • When the engine is hot and it is getting close to overheating, look down into the radiator. The coolant should flow. (It should look like a little river is going past the radiator opening). If the coolant appears to be still then your water pump is bad.

Other possible problems:
  • Bad coolant temperature sensor.
  • Air bubble in the cooling system.

May 25, 2011 | 1993 Saturn SL2

1 Answer

2000 Saturn SL 1 I changed the coolant temperature sensor and the thermostat. 3 days later I replaced the water pump. I then replaced the radiator. relaced the water pump gasket. I then replaced the...


May sound odd but try disconnecting the positive lead from your battery for about 60 seconds. Reconnect it then start your car. This should clear the error codes

Jan 10, 2011 | 2000 Saturn SL

1 Answer

My 2000 Saturn SL2 is overheating. At first it would overheat when sitting idle and then once speed reached 35+mph it would cool off, but now it gets hot and stays. What is causing this?


Well, the overheating at an idle would normally be caused by your cooling fan not engaging. I would first check to see if you fan is working by turning on your a/c (this will override the fan sensor and turn it on before it gets above operating temperature). If it doesn't come on you should check your AUX. Fan Relay. If thats ok, you probably need a new fan motor but first replace your coolant temp. sensor as this is an inexpensive parts and may save you quite a bit of money (also your vehicle may be running at the normal temperature but your temp sensor may be sending a signal telling you it's hot). This will explain why it was overheating at an idle. As far as it overheating while driving, you should first check to see if your water pump is leaking and make sure your belt is intact. If the water pump pulley is not spinning your belt will be glossy from excessive heat from friction. If your water pump is good and you can spin the pulley by hand, you should then consider when the last time you replaced the thermostat as it may be stuck closed. also your radiator may have some blockages in it so I would replace the thermostat, drain the coolant by removing the lower hose and spray a hose into the radiator until the water comes out looking pretty clear. I hope this helps you figure this out.

Aug 16, 2010 | 2000 Saturn SL

2 Answers

Replaced radiater ,thermastat still no heat and


Did you run engine from cold, WITH HEATER ON, and fill cap off when re-filling system? If not, try that and see what happens. Let the engine get up to operating temperature and rad fan come on to cool 2 or 3 times before putting cap back on.

Nov 17, 2009 | 1995 Subaru Legacy

2 Answers

Overheating after replacing radiator & thermostat in my 94 318I


check sensor
check actual temp with non-contact thermometer

Jul 01, 2009 | 1996 BMW 318

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1996 saturn sl2 fan coming on late an over heating


Start with engine cool, & remove radiator cap. Check level in rad & fill to an inch or so from top of rad. Start car & turn heater on.(not defrost)
Now let it run until engine gets up to normal operating temperature & let it run until rad fan comes on & off, 2 or 3 times. Rev engine slightly every so often just to help disperse air in system faster. Fill rad as needed during this time. After you do that, and fan has come on & off 2 or 3 times, put rad cap back on & fill return bottle to proper mark, then see how it is.
I suspect it's just air in system & this should cure that . If not get back to me.

Jun 27, 2009 | Saturn SL2 Cars & Trucks

2 Answers

2001 Hyundai Accent. Heating and stalls


If the water tends to keep going down then there has to be a leak somewhere. Try also looking at the hose coming from the overflow tank and see if the hose might be kinked. You might also be blowing antifreeze out the tailpipe. Take a look and if there is bluish white smoke then you have confirmed that theory,

Jun 10, 2009 | 2000 Hyundai Accent

3 Answers

97 saturn sl2 temp light flashing and low coolant light flashing what could be the problem ? coolant is full and the heat works.


If the temp gauge is reading normal, the lights are flashing, and the coolant level is full, the level sensor in the coolant bottle is the problem. I'm a service consultant for a Saturn dealer and I've run across this many times.

Apr 17, 2009 | 1997 Saturn SL

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