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No heat my 2002 saturn runs ok radiator hoses and atifreezer gets hot turn heat on insid the car fan is working ok on all the settings I toped the level in the reesvoir .it worked ok for +/-5 minutes now is no heat again .need helo thaks

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  • Contributor
  • 17 Answers

Could be a temperature sensor or switch but not the temp sensor for your temp gauge

Posted on Dec 10, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

egoboss187
  • 53 Answers

SOURCE: running hot

replace the therostat ( most likely )

and the radiator cap

Posted on Nov 30, 2008

  • 36 Answers

SOURCE: heating problem

If you changed the thermostat yourself and have noted that the lower radiator hose is cooler than the upper radiator hose, you may have installed the thermostat incorrectly or have purchased a faulty thermostat. A lower radiator hose that does not get hot (or as hot as the upper radiator hose) is a direct indication of a faulty thermostat. Please vote for this solution if you found this to be helpful. Thanks,

Posted on Jun 01, 2009

  • 490 Answers

SOURCE: 2002 PT Cruiser LE (no Turbo) Overheating. (Fan

There is no machine for this,however a VERY skilled auto electric shop might be able to help.They really have to have a Gift with car wiring to fix your problem,it can be FIXED,find the right shop in your area.I will try and think this through to help you,this is what I used to do,It's not a book problem it is experience that will fix your car. I do have a question? How does your car run without the AC on?

Posted on Jul 28, 2009

  • 7353 Answers

SOURCE: 2002 dodge 1500 Changed radiator, thermostat, and hoses. No heat

Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.

Posted on Nov 19, 2009

  • 1 Answer

SOURCE: 92 honda accord is running hot but radiator fan is not turning

Connect the fan directly to the battery to test

Posted on Dec 08, 2009

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3 Answers

I have 07 saturn aura and it starting to run hot and the heater dont blow hot!! i changed the thermostat and it still is ruunig hot.. what is wrong?


How hot does the engine get in degrees F? Does the radiator fan work? You may need to check coolant flow through the radiator and heater code? With a warmed up engine, are the heater hoses hot? If the blower motor works ok, just not warm, check temp actuator, probably under the dash.
Any applicable trouble codes?

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That makes no sense at all. Coolant will cool better than water.

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Heater runs but does not heat


If it is blowing air at different speeds inside the car, I think you are saying the blower works fine, but blows no heat.
If it is running different speeds but is not blowing inside the car, you probably have a plastic flap inside the heater assembly inside the car that is not opening, not allowing the air to come in.
That might likely be a vacuum issue, or maybe a mechanical one. (whatever is supposed to open the flap)

If the flap is working and you are getting different amounts of air inside the car according to the speed of the blower fan setting you have selected, go to the engine temperature.
Is the radiator getting hot?
Have you a temperature gauge to tell if the engine is hot?
If not, you will need to warm up the engine, and then determine if there is hot water in the radiator.
If you pull off the cap to see, it could blow up on your face, so you will need to find someone who can help you with this.
If the radiator is hot after about 10-15 minutes of the motor running, you are perhaps not getting hot water to the heater.
You would need to check the temperature control to see if it is working. This is often a mechanical switch located near the firewall of the Jeep under the hood. Usually it is the size of a small fist, and has a heater hose running into and out of it, and has a wire attached to the top.
It might have a wire to it that should move when you select hot or cold inside the jeep at the control panel. Sometimes the control wire will rust or break.. The heater hoses should be hot if the hot water is running through them.
If your radiator is low on coolant, often the heater inside the car will not work.

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the cooling fan running for a short time after turning off is normal.as far as the NO HEAT is concerned have the topmost hot hose clip undone and vent any airlock you may have.(pref a hose that is attached to the heater inside the engine bay).

Oct 07, 2010 | 2002 Jaguar S-Type

1 Answer

1991 daihatsu applause super selection eng-HD-E1 1589cc manual over heating- have checked thermostat water pump not that old radiator ok top radiator hose hot bottom hose cold. does this model require...


let the car get up to operating temp and squeez the top radiator hose, if you feel the coolant squeeze out into the motor you thermostat is fine, but if you feel the hose and it feels presurized you need a thermostat. Also check to make sure the fan is operating at operating temp because that would cause overheating. ALL vehicles require the cooling system to be bled. Some have a bleeder screw (usually near the thermostat ) if not fill the radiator and keep toping it off at the coolant tank.

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Overheating 94 saturn sc


you may simply have air in your radiator. Often when fluid is changed or leeks out air gets stuck inside. This happens often. You need to locate radiatior pressure relief valve. Open this while car is warm and running, but immediatly close when no air comes out just water.

Jun 05, 2009 | 1993 Saturn SC1

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check the fan on the radiator it should start before it over heats

Dec 27, 2008 | 1993 Mercury Tracer

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No heat


Sounds like you have a clogged heater core. Sometimes heater cores can be flushed, but more times than not, it has to be replaced. If you've replaced the thermostat and your lower radiator hose is always cold, chances are it is the heater core. Hope this helps! Have a great day!

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turn your heater on to max heat and high fan. then see if you can feel the hoses on the firewall for heat they should be hot. make sure that the fan unit on the radiatoris working if the upper radiator hose is hot the fans should be running if they are not that means that either the relay is bad the thermo sensor is bad or the fan unit is shot... please rate the solution..........thanks

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