Question about 2001 Chevrolet Venture

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Why don't my cooling fans come on on there own? I have replaced the fuses and relays.

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If you have a blown head gasket , hot air will trap the coolant in the system, and not allow the coolant to reach the sensor, or you may have a bad sensor.

Posted on Feb 01, 2010

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2 Answers

Where is the fuse for motor fan in uplander 2006?


there is 2 fuses that you have to check
one will be in the big fuse assembly in the engine bay, the other probably in the fuse assembly in the cab
If they prove ok then it is possible that the coolant temperature SENSOR is faulty and needs replacing
don't confuse it with the temperature sender which operates the temp gauge.

Aug 10, 2015 | 2006 Chevrolet Uplander

1 Answer

What causes both cooling fans to not run?


Hi Naomi , there is a lot involved in the control of the cooling fans on your vehicle ! There are three fuse's , three relays an a fan control unit !
1. radiator fan main relay , located in underhood relay box A
2.condenser fan relay , located in underhood relay box A
3.radiator fan relay , located in underhood relay box C
4.Cooling fan fuse # 47 20amp. underhood fuse / relay box
5.condenser fan fuse # 50 20amp in underhood fuse / relay box.
Any one of these could cause them to not work, rather then just replacing parts an wasting money you should take it to the repair shop !

Apr 06, 2015 | 1997 Acura RL

1 Answer

Ck engine light problem on 2001 Impala


Well the code is for the circuit - the computer commands the relay to turn the fan on and it doesn't happen.
The computer provides the ground for the relay.
If you have replaced the relay and the fan and the fuse still blows, I would look for a problem in the harness between the fuse box and the fan, including the ground circuit for the fan.
The fuse for the cooling fan is usually a 30amp marked "cooling fan" in the fuse box in the engine compartment.
Do you know what the 25amp fuse that is blowing is for ?

Jul 30, 2012 | Chevrolet Cars & Trucks

1 Answer

Fans not working/Overheating


Probably the temperature sending unit...if not that the relays...they should be relatively cheap and easy to replace...

Mar 31, 2017 | 1989 Toyota Camry

1 Answer

Cooling fans won't turn on. I replaced temp sensor, fan relay,and thermostat. I jumper across the relay and both fan's came on by doing that,I don't know what else to test ? any Idea's...


On the relay you should have 12 volts at 2 slots terminal 30 has power all the time terminal 86 has power when then computer tells the relay to turn on fan, for cooling or a/c, terminal 85 is ground(-) for the 86 terminal to energize the relay to send 12volt from terminal 30 thru relay and out terminal 87 going to fans, sounds to me like computer not getting the signal to relay, you did get for blow fuse? and does fans come on with a/c on?

Aug 07, 2011 | 2003 Mitsubishi Galant

1 Answer

I don't have car manual and I have a missing fuse on the fuse block under the hood. It is for the cooling fan and I don't know what size goes in there.


Contact a Local Parts store give them your year make and model ask about cooling fan relay fuse Will be a 12Volt for sure

May 09, 2011 | Toyota Corolla Cars & Trucks

1 Answer

Which fuse goes to the cooling fan


there is fuse and a relay for the cooling fan.just turn ignition on and test all the fuses(some fuses will only work with the system on like headlights/tail lights).check the relay in the relay box(panel)under the hood.you may have a bad cooling fan,you don`t say why your checking the fuse.if you unplug the connector at the cooling fan and jumper a ground wire and power wire it should work.if not then you need a cooling fan motor or assembly.

Mar 22, 2011 | 1987 Pontiac Firebird

2 Answers

Overheats if left idling but not if driving...cooling fans aren't coming on...what couls be wrong?


the cooling fans on your car are comanded on by the engine control module which reads engine temperature from the temperature sensor . when comanded on the engine control module sends a signal to the cooling fan relays . which in turn runs the current to the cooling fans . So you might want to check the cooling fan relays and make sure the fues for the cooling fans are good and the relays .if the cooling fan fuses and relays are good it could be a problem with the fan motors or the engine control module not reading the right temperature in that case it could mean you have a problem with the temperature sensor

Mar 04, 2011 | 1998 Cadillac DeVille

1 Answer

When I turn on my a/c the car starts to everheat


When ever the car overheats,it is always the best thing on your car,to check the cooling fans.When the ac is on,look to see if the cooling fans are running,and running fast,and smoothly.In your case,I am going to go out on a limb,and say they are not.First check for blown cooling fan fuse.Then,if the fuses are alright,check the cooling fan relays,most likely more than one.One prong,or spade coming out of the relay,is ground(where it plugs up).To make the relay energize,ground this terminal with a test light .Just like you are using the test light to check for 12 volts.When you touch the ground spade on the relay it will energize the relay to turn the fans on.Just pull the relay out of it`s spot,just enough to touch the spade.Do this with the ac on,and engine running.The clutch relay on most cars will energize the relay,but the ac compressor is working on your car,so it is either the fan relay,or the high side switch on the ac system that is bad.Try and see if the cooling fans,both of them,or one of them,will come on by them selves as the car warms up,with the ac off.The fan or fans should come on,and go off by themselves.Don`t let the engine overheat,keep a good eye out not to let that happen.If the fans never come on,then,the fan,or fans could be bad.You can test them by running wire from battery to the fan,and grounding to frame.Now the fuse,or relay being bad will also cause this.If a fuse is blown,then ,one or more of the fans are bad,and will have to be replaced.The fans cool the radiator for the engine and transmission cooling,and the condenser for the ac system.If the condenser is not cooled down,the ac freon will be to warm to cool the vehicle.If I can help,let me know.>>roniecon@gmail.com

Aug 26, 2009 | 2000 Honda Civic

2 Answers

Where is location of cooling fan relay?


Under the hood on the drivers side, just forward of the shock tower, you will see what is called an "under hood fuse center". On the cover you can see the various fuses and relays that are located in the fuse center.
One of those relays is the coolant fan relay. Remove the top cover of the fuse center to gain access to the relay.
Hope this answers your question, good luck.
Regards,

May 02, 2009 | 2002 Pontiac Sunfire

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