Question about 2003 Pontiac Grand Am

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Coolant fan not kicking on,it almost overheats. when u r driving it gets up to 200

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  • yadayada
    yadayada Mar 23, 2011

    The fan doesn't come on until the temperature of the engine reaches 235F, still think it is running hot?? 200F is perfectly normal operating temperature.

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190-200 is right where your temperature guage should be on the grand am. I own one
Hope this was helpful for you. Let me know

Posted on Mar 23, 2011

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No pressure in the cooling system, losing coolant then overheats.


you have a head gasket that is failing. You can confirm this by having the coolant "sniffed" with a four gas analyzer (normally used for emissions testing). If your coolant has hydrocarbons in it than its coming from the head gaskets. They are pretty common for this engine.

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Cooling fans not working


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Hi, my girlfriend's 2001 Eclipse 6 cyl. is quickly overheating when stopped at red lights with the A/C on. With the A/C off, it does not overheat. When it does overheat, and the stop light turns...


Check to see if your radiator coolant fan runs with the A/C on. It should run constantly with the A/C on, and even with the A/C off the fan should come on when the coolant reaches 220 degrees or better and stay on until it cools down below 200 degrees.
The problem is that you're not getting enough ambient air through the radiator.

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Cooling fan for my lumina will not kick on, causing my car to over heat.


CHECK COOLANT FAN FUSE AND RELAY.IF ALL IS GOOD YOUR COOLANT TEMPERATURE SENSOR FAULTY. AT CERTAIN TEMPERATURE LIKE 190 TO 200 DEGRESS COOLANT FAN WILL TURN ON.BUT FIRST CHECK COOLANT FAN.HOT WIRE IT.IF FAN DONT RUN REPLACE COOLING FAN. IF FAN DOES RUN YOU HAVE BROKEN OR DAMAGE WIRE IN ELECTRICAL CONNECTOR.FAULTY PCM.

Feb 25, 2011 | Chevrolet Lumina Cars & Trucks

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Coolant temp rise to around 210 degrees when idling or in stop & go traffic bur drops back to around 196 when cruising. Is this normal?


completely normal those readings are perfect this car comes with a 195 degree thermostat,210 is fine for stop a go traffic remember a cooling system with the proper amount of coolant in it and under pressure will not overheat till about 240 degrees your in great shape no conerns!!!!!...

Sep 01, 2010 | 2006 Chevrolet Corvette

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My car overheats after 10 minutes of driving and it has coolant, what could be causing my engine to overheat


Could be several things.
1-Electric radiator fan not kicking on
2-Bad thermostat
3- Weak water pump
4-Clogged radiator

Aug 27, 2010 | 1995 Chevrolet Lumina

1 Answer

When idling my jeep overheats. The cooling fan is running and it speeds up when temperature goes up. The temperature gets close to 260 degrees and the engine tries to stall. when I start moving it cools...


At idling speed an engine does build up a lot of heat and the cooling fan will kick in. In slow moving traffic or traffic jams the temperature gauge can touch the red - particularly on hot days. The reason it cools down when you start moving is because of the air flow through the radiator.

Presumably there are no leaks from the cooling system otherwise you would have mentioned it. In normal circumstances the fan will not be running as you are driving at speed, as the air-flow through the radiator is sufficient to cool things. The fan only kicks in to get rid of excess heat - and this usually occurs at idling speed or after you have parked the car.

If the fan is running all the time as you drive, this points to either a fault in the fan switch, or the car is running too hot. presumably in normal driving the fan isn't running and the temperature gauge reads normal?

It is common - in stationary traffic many cars overheat (particularly big engined models) try to stall and 'cut out'. Restarting can be difficult until the engine cools down.

Is your car overheating in normal driving conditions or just at idle speed? Overheating in normal driving conditions can be caused by things like a failing water pump, blocked radiator, collapsed hose, faulty thermostat or, in the worst case scenario, cylinder head problems.

Overheating at idling speed is 'common'. Check your coolant level. If your car isn't using/losing coolant then there probably is no major problem. You can flush out the cooling system and refill with new coolant - and also check your radiator. Are the cooling fins crumbling with age? Or maybe they're partly clogged with insects and debris from the road? A blast with a hosepipe wil sort that out ..

The question is how much does your car overheat in normal driving? If it doesn't .. it appears as though you have nothing to worry about as such. Most cars have 2 speed fans... the 2nd faster stage kicks in at some point dependant on engine temperature. Perfectly normal.

Aug 14, 2010 | 2003 Jeep Grand Cherokee

1 Answer

Car keeps over heating


Honda's rarely overheat even when the coolant levels are low. Start by checking the coolant level in the radiator. The most effective procedure to check for leaks is to pressure test the radiator cap and the entire system. Also make sure the fans are working properly. One fan will kick on when the coolant temperature reaches a set degree and the other will only kick on when the a/c compressor is on. This type of system actually will cool the engine down better with the a/c on. Start the car cold and turn on the a/c. One fan should engage. As the engine warms up near 190 to 200 degrees the other fan should engage. While it is warming up, monitor the upper radiator hose. The thermostat should open around 180 - 190 degrees and you will be able to tell when the hose feels solid and very warm if you carefully grab it momentarily. If no problem is found, check for coolant in the oil and/or oil in the coolant as well as white smoke from the exhaust pipe which are signs of a bad head gasket.

Apr 28, 2010 | 1987 Honda Civic

2 Answers

The cooling fan on my 2001 ford escort SE will not work normally


Check the coolant temperature with the car stopped. At idle with the hood up keep the thermometer in the coolant. Confirm if the coolant is not overheating but the engine is!!

Run the A/C keeping the thermometer in the coolant and allow the fan to kick on.

If with the A/C on the engine doesn't overheat then it confirms that the low speed on the fan motor is not working. Read the description of the Taurus where the low speed is used for normal operation when temperature is required but the high speed is activated when the A/C is on. The circuit is simple.

In your case the low speed has to be activated for the A/C to go into the high speed. The fact that the high speed is working and low speed is not indicates the low speed of the fan is defective.

Other problems such as the thermostat or plugged cooling system(radiator clogged) could be the root problem!

Hope this helps?
2010-09-05_004249_03_focus_cooling_fan_resistor-3xudhdxidxafwe4mdbsnm14c-4-0.jpg

dual_speed_fan_diagram-3xudhdxidxafwe4mdbsnm14c-4-2.jpg

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