Question about 1993 Nissan Altima

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My radiator and auxillary fan does not kick in until the temperature gauge reach 3/4 of the gauge

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: When I start the car

Max as in overheating or not, it shouldn't cool down afterwards, it should stay at a steady temperature as long as it is where it's supposed to be. This is not a problem.

Posted on Apr 03, 2011

emissionwiz
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SOURCE: temperature gauge in nissan frontier goes from medium to low randomly, also off and on roaring sound coming from what seems to be the fan while running.

This is an indication of air or gas bubbles in the cooling system, it can be that the system is low on coolant due to a leak (have a cooling system pressure test performed) or that you have a leaking engine cylinder head gasket. I would also replace the thermostat just to rule it out as a cause, it could be sticking and causing the rapid swings in engine temperature.

Posted on Jan 19, 2012

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When i am driving my 2002 buick rendevous, the temperature gauge sits between 1/4 and 1/2. however when i have to sit idle ( ex. like at a red light) the temperature gauge creeps up to between 1/2 and...


This is normal. The gauge should sit at around the 1/2 mark. And it will go up at idle until the fans kick on then go back down some. Fans will kick on around 210 degress

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Why does the engine fan NOT turn off on my 2002 Jaguar S Type 4.0 liter? It runs for several minutes after turning the car off and will come on while driving. I just replaced the sensor and it is still...


It would not be abnormal, so long as the fan does not come on when you switch on from cold. The fan's job is to draw air through the radiator to cool the contained liquid to a suitable working temperature. The fans sensor is activated by the temperature of the coolant. If this is a problem which worries you, try driving as gently and slowly as possible for the last mile or two of your journey. If things are normal the fan should not run on switch-off as that 'trick' will have allowed the coolant to get below the fan-kick-in temperature before you stop the engine. If your vehicle has a temperature gauge use the rteading as an indication.

http://wiki.answers.com/Q/Should_the_radiator_fan_run_after_the_engine_is_turned_off

May 09, 2011 | 2002 Jaguar S-Type

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I have a 2003 chevy impala. just changed the thermastat because the temperature was fluxuating. Since changing the thermastat the temperature gage constantly read in the red, however the coolant level...


You probably need to bleed the cooling system properly.

Open the cooling system bleeder screws.

Slowly fill the cooling system with a 50/50 coolant mixture until coolant runs freely out of bleeder screws.
Close the cooling system bleeder screws
Install the coolant pressure cap
Start the engine.
Run the engine at 2,000 - 2,500 RPM until the engine reaches normal operating temperature. (midway on gauge)
Allow the engine to idle for 3 minutes.
Shut the engine off.
Allow the engine to completely cool.
Top off the coolant as necessary.
Run engine again at 2000 - 2500 RPM until the engine reaches normal operating temperature.
Allow engine to idle until cooling fans come on. It should come on with the gauge about 3/4 of the way to red. - if it gets to where is touches the red, shut down immediately.
When the fan comes on, put your hand behind the fan and observe the temperature of the air coming from the fan. It should feel hot. If it is blowing cold air, the coolant is not circulating through the radiator like it should. This could be caused by lots of things including an improper/defective thermostat, corroded water pump impeller, or a blown head gasket.

Dec 02, 2010 | 2003 Chevrolet Impala

1 Answer

I have a ford taurus that the cooling fans will only run when when the ac is on 2002/ engine 3.0 efi/


The cooling fans on this vehicle won't come on unless the a/c is on or until the engine coolant temperature reaches about 220 degrees. Once the coolant has reached this temperature the fans will come and and run until the engine cools down to about 210 degrees and they will then turn off until the temperature climbs up again. The fans usually aren't on at all at highway speeds because enough air is being forced through the radiator to keep everything cool. The true test of cooling fan operation is to allow the car to idle in park with both the a/c and defrost turned off and let it run until the fans come on. When The temp gauge reaches about 3/4 of the way up, give or take a bit, the fans should come on. Keep an eye on the gauge so the engine doesn't overheat just in case there really is a fan control problem but I'd say you'll most likely find that the fans are working properly since they do come on for the a/c. Hope this helps!

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When driving i have rising water temperature


The coolant temperature should rise until the gauge indicated roughly half. if it continues to go until it reaches the red "H" shut the vehicle off and wait for the car to cool off. The most likely cause of this is the thermostat. It is a $4-$10 part and usually is easy to change. Thanks for asking!

Jun 28, 2010 | 2000 Mitsubishi Galant

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The fans dont start til temp reaches redline on temp gauge.


Thermostat and Coolant Temp Sensor is What I Recomend Replacing on this Vehicle

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Radiator fan won't kick in


On my slightly older Saab the radiator fan is electric and only is engaged when the temperature meter reaches 3/4 to the top.

When the car is in motion it will not spin since the air flowing through the radiator from the speed is sufficient to maintain normal engine temp. Only when the car is still it for a few minutes it may start to spin especially during summer, it will sometimes continue to spin even after the engine is turned off. This is normal behavior for this car.

To conclude, if your engine temp only goes up to half the gauge there would be no need for the fan to start spinning. If it doesn't engage during the conditions I described above there would be a problem that needs to be fixed.

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Overheating radiator


some bmw's have a electrical thermostat

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Help with a Sharan 2.0 gl 1996 auto overheating?


Hi There,
Replace the Thermostat and let me know the results.

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1 Answer

Auxillary fan not working


check the temp. sensor

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