91 Camry Cooling Fans always runs

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Old 15 Aug 2005, 09:27 am   #1 (permalink)
Rene
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Default 91 Camry Cooling Fans always runs

I've got a '91 Camry 4cyl, there are dual cooling fans on the
radiator which are supposed to go on to cool down the radiator,
however they never go off any more, the start up as soon as you
start the car. I supposed there is a sensor switch somewhere but
my Chilton manual is useless in locating it. Can anyone tell me what
I may be looking for, what might be causing to fans to be constantly
running, the car does run at a normal operating temperature so it's
not caused by any overheating problem...thx


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Old 15 Aug 2005, 04:24 pm   #2 (permalink)
davidj92
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Default Re: 91 Camry Cooling Fans always runs

Rene wrote:
> I've got a '91 Camry 4cyl, there are dual cooling fans on the
> radiator which are supposed to go on to cool down the radiator,
> however they never go off any more, the start up as soon as you
> start the car. I supposed there is a sensor switch somewhere but
> my Chilton manual is useless in locating it. Can anyone tell me what
> I may be looking for, what might be causing to fans to be constantly
> running, the car does run at a normal operating temperature so it's
> not caused by any overheating problem...thx


They are switched on by a heat sensor in or around the thermostat housing
which can go bad and give false signals. They are probably switched with a
relay to handle the current draw and these can go bad and stick in the on
position. The relay is a small black box appx 3/4"x3/4"x1" and should be
around the fuse box under the hood.
HTH, davidj92


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Old 15 Aug 2005, 04:28 pm   #3 (permalink)
Rene
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Default Re: 91 Camry Cooling Fans always runs



"davidj92" <davidj92@sigecom.net> wrote in message
news:8LednWxztKNrmpzeRVn-pQ@sigecom.net...
> Rene wrote:
>> I've got a '91 Camry 4cyl, there are dual cooling fans on the
>> radiator which are supposed to go on to cool down the radiator,
>> however they never go off any more, the start up as soon as you
>> start the car. I supposed there is a sensor switch somewhere but
>> my Chilton manual is useless in locating it. Can anyone tell me what
>> I may be looking for, what might be causing to fans to be constantly
>> running, the car does run at a normal operating temperature so it's
>> not caused by any overheating problem...thx

>
> They are switched on by a heat sensor in or around the thermostat housing
> which can go bad and give false signals. They are probably switched with a
> relay to handle the current draw and these can go bad and stick in the on
> position. The relay is a small black box appx 3/4"x3/4"x1" and should be
> around the fuse box under the hood.
> HTH, davidj92
>

Thank you very much.


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Old 15 Aug 2005, 05:03 pm   #4 (permalink)
RD Sandman
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Default Re: 91 Camry Cooling Fans always runs

Rene formulated the question :
> I've got a '91 Camry 4cyl, there are dual cooling fans on the
> radiator which are supposed to go on to cool down the radiator,
> however they never go off any more, the start up as soon as you
> start the car. I supposed there is a sensor switch somewhere but
> my Chilton manual is useless in locating it. Can anyone tell me what
> I may be looking for, what might be causing to fans to be constantly
> running, the car does run at a normal operating temperature so it's
> not caused by any overheating problem...thx


Some cars automatically turn the fans on if the AC is running. Is
yours?


--
RD (The Sandman)

A real man has to believe in something....I believe I'll have another
beer.

School - (n) Four walls.......with tomorrow inside.

Success comes in a can; failure in a cannot....

Whether you think you can......or can't.......you're right.

I finally got everything together......now if I can only remember where
I put them.


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Old 16 Aug 2005, 09:22 am   #5 (permalink)
Rene
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Default Re: 91 Camry Cooling Fans always runs

No, it comes on if the A/C is turned off.


"RD Sandman" <rdsandmanSPAMLOCK@comcast.net> wrote in message
news:mn.7b877d58969b92ca.35493@comcast.net...
> Rene formulated the question :
>> I've got a '91 Camry 4cyl, there are dual cooling fans on the
>> radiator which are supposed to go on to cool down the radiator,
>> however they never go off any more, the start up as soon as you
>> start the car. I supposed there is a sensor switch somewhere but
>> my Chilton manual is useless in locating it. Can anyone tell me what
>> I may be looking for, what might be causing to fans to be constantly
>> running, the car does run at a normal operating temperature so it's
>> not caused by any overheating problem...thx

>
> Some cars automatically turn the fans on if the AC is running. Is yours?
>
>
> --
> RD (The Sandman)
>
> A real man has to believe in something....I believe I'll have another
> beer.
>
> School - (n) Four walls.......with tomorrow inside.
>
> Success comes in a can; failure in a cannot....
>
> Whether you think you can......or can't.......you're right.
>
> I finally got everything together......now if I can only remember where I
> put them.
>
>



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Old 16 Aug 2005, 12:07 pm   #6 (permalink)
marvinshos@yahoo.com
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Default Re: 91 Camry Cooling Fans always runs

sss

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Old 18 Aug 2005, 12:39 am   #7 (permalink)
Viperkiller
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Default Re: 91 Camry Cooling Fans always runs

On Mon, 15 Aug 2005 14:27:46 GMT, "Rene" <rmckeever@gmail.com> wrote:

>I've got a '91 Camry 4cyl, there are dual cooling fans on the
>radiator which are supposed to go on to cool down the radiator,
>however they never go off any more, the start up as soon as you
>start the car. I supposed there is a sensor switch somewhere but
>my Chilton manual is useless in locating it. Can anyone tell me what
>I may be looking for, what might be causing to fans to be constantly
>running, the car does run at a normal operating temperature so it's
>not caused by any overheating problem...thx
>

This is more than likely due to a faulty fan relay. When this goes
out on typical cars, the fans never turn on. Toyota designed it so
that if the relay fails, they fans stay on so your car doesn't
overheat.

Consequently, the same is true for your thermostat. If it fails, it
stays open instead of closed like other manufacturers.
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