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When i start engine why the fan do not rotate?

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If you're talking about the coolant fan under the hood, it is thermostatically controled, and will not turn on until the engine reaches a predetermined temp, which is programmed into the pcm. It will usually also come on if the ac is engaged.

Posted on Jan 03, 2011

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Posted on Jan 02, 2017

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4 Answers

Does the engine cooling fan run continually


No the cooling fan should run continuously.

May 11, 2014 | Ford Fiesta Cars & Trucks

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Fan rotation


AC or Engine ? If engine it may be the engine coolant temp. Fan switch. Its either located on. Lower radiator or thermost housing. If you can unplug the wire at sensor and ground the wire. If fan runs you need to replace sensor.

Mar 31, 2014 | 1999 Jeep Grand Cherokee

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I have just bought 2000 Proton Satria, I would like to know if the fans at the radiator to help cool the engine are temperature controlled to switch on or are they supposed to be running from the moment...


yes, they are made that way, if you want to make sure, just wait til it warms and pop the hood, and maybe turn fan switch to low thsat way it will need to start the fan to keep motor cool good luck

Jan 28, 2014 | Cars & Trucks

1 Answer

Have a 1993 Buick Century that keeps overheating. New thermostat put on, new water pump put on, radiator has been rodded out & flushed & engine flushed. Help!!!!


You do not mention the fan. Is your fan working? Start the engine and turn on the A/C this should force the fan on. If it does come on with the A/c you will have to see if it comes on during normal operation ( start the engine w/o A/c and let it run until the temp gage gets into the red) If it does not come on by itself you have a bad block temp sensor / or fan relay circuit.. Hope this helps Fix Ya up. If you have to in case of emergency, straight wire the fan from the battery. It is a two wire motor. One positive and one negative wire (12vdc). Watch the fan blades for rotation and wiring polarity, the fan pulls thru the rad.

May 22, 2011 | 1993 Buick Century

1 Answer

My fan is not moving when i start my engine. It's the fan near the radiator?


Is the belt that goes to the fan pulley assembly loose or missing? Tighten or supply a belt.

If a belt is present and tight, is the pulley rotating with the belt or stationary? If stationary, then the fan pulley assembly bearing is defective.

Feb 25, 2011 | 1995 Isuzu Rodeo

1 Answer

Temp gauge rises to hot then starts to cool then rises again to hot back and forth


Start by checking the coolant level.If it is low,top it off with the recommended coolant.If it is full,the fan clutch could be the culprit.The fan aids in the cooling of the engine as well.The fan is connected to a clutch that helps the the fan rotate at a certain rpm.If the clutch is leaking,then cooling performance is reduced.

Oct 15, 2010 | 1998 Mercury Mountaineer

1 Answer

89 toyota sr5 v6 4x4 automatic will not shift into O/D. Thebutton for O/D clicks and dash light comes on but it is not doing shifting.


still working on my identical problem with 1983 toyota truck, started not shifting into odints OD switch lite is on. Figured out thermostat sometimes is the problem as the engine isnt warming up enuff. changed (bad frozen) thermo and hose, no change.

Then figured viscious clutch was frozen. Found fan rotated a blade or two when cold, but was not freewheeling or easy. Started truck cold, and noted lot of air movement from fan which seemed more when revved up. couldnt stall fan with rolled up newspaper. after warming up for less than 5 minutes, noted change in engine speed, and much less air movement from fan. Now could stall fan with rolled up newspaper. However, fan was now easy to move by hand, and easily rotated about half way.

Now suspecting one of the solinoids, and trying to dope that out....hope this helps

Feb 18, 2010 | 1989 Toyota Pickup SR5

1 Answer

My protege 94 leaks black smoke from engine after traveling 1 or 2 mile. When I see cooling fan after starting engine, it does not rotate. what might be the possible cause.


The fan does not rotate all the time.
Temp. senor provide reading to the computer ECU and it will trigger a fan relay to turn on the fan.
The three leakable items are
oil pressure sender/oil sending unit
coolant temperture sensor
and
valve cover gasket.
Clean out the motor with cleanser when it's cold.
Start it up and look for the location of the leak(s),
Please post more info on the comment window.
I will follow up on it.

Feb 20, 2009 | 1994 Mazda Protege

1 Answer

2001 jimmy


If your truck is equipped with a clutch fan, the clutch may not be working properly.Start your truck and let it get to operating temp. and shut it off, the fan should stop rotating when the engine stops. If it continues to rotate, then the clutch is not working properly.

Jul 01, 2008 | 2001 GMC Jimmy

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