Prev: {BS} Latest Internet slander about Glenn Beck
Next: {BS} How many was that again?
From: Jeff Strickland on 13 Sep 2009 22:31

"homepc" <wiebe008(a)gmail.com> wrote in message
news:9Y5rm.12450$dV4.5875(a)newsfe04.iad...
> Hello all
>
> I've noticed a loud squeaking noise coming from around the generator area
> when I started my 2007 Corolla yesterday. After driving a short distance
> it stopped. I've also noticed during the last week or so, that the
> radiator fan seems to turn on far more often than it did in the past. My
> car only has a little over 7000 km so far as I only use it to run errands
> on my weekends. Could it be that the water pump is failing already or
> that the belts just need adjustment? I'm bringing in the car to the
> dealer tomorrow morning and just want to be prepared the best or worst
> case scenario. I bought the car exactly 3 years ago next week so problem
> may or may not be covered by warranty.
>
> Thanks!
>
>
>


I'm going with the loose fan belt theory. The belts slip when cold, and this
makes the noise you describe. Atfer a short while, usually a matter of
seconds but occasionally about a minute, the belts stop slipping and the
noise goes away.







From: homepc on 16 Sep 2009 13:52

"matrixxx09" <matrixxx09(a)gmail.com> wrote in message
news:65155e6c-4750-425a-949b-d49f05d439ca(a)r33g2000vbp.googlegroups.com...
On Sep 13, 8:54 am, "homepc" <wiebe...(a)gmail.com> wrote:
> Hello all
>
> I've noticed a loud squeaking noise coming from around the generator area
> when I started my 2007 Corolla yesterday. After driving a short distance
> it
> stopped. I've also noticed during the last week or so, that the radiator
> fan seems to turn on far more often than it did in the past. My car only
> has a little over 7000 km so far as I only use it to run errands on my
> weekends. Could it be that the water pump is failing already or that the
> belts just need adjustment? I'm bringing in the car to the dealer tomorrow
> morning and just want to be prepared the best or worst case scenario. I
> bought the car exactly 3 years ago next week so problem may or may not be
> covered by warranty.
>
> Thanks!

No idea, but if you weren't already planning to, please post the
result later.


The dealership kept my car overnight and the mechanic who checked it out
said it was fine. The squeaking fan belt was caused by moisture. We had
several consecutive days of light fog overnight.

I was also told that the radiator cooling fan is computer controlled, and
that it is not only triggered by the temperature of the motor coolant. I
explained that the radiator fan would turn on moments after starting the car
while the motor was just warming up. When I showed this to the mechanic, he
just turned off the ventilation fan inside the car, and the radiator fan
instantly turned off and stayed off. He explained that with higher humidity
and temperature, the computer in the car may anticipate a higher load on the
engine when the ventilation fan is turned on, regardless if the air
conditioner is on or off, and when this happens, the radiator cooling fan
turns on, even if the motor hasn't reached a high enough temperature.

Funny, I've had the car for 3 years and have only noticed this quirk within
the last couple of weeks. The weather this September has been hotter and
way more humid than any month following last spring. I guess that explains
it.

Thanks for all the input!


From: Ray O on 16 Sep 2009 16:52

"homepc" <wiebe008(a)gmail.com> wrote in message
news:bC9sm.5738$6f4.427(a)newsfe08.iad...
>
> "matrixxx09" <matrixxx09(a)gmail.com> wrote in message
> news:65155e6c-4750-425a-949b-d49f05d439ca(a)r33g2000vbp.googlegroups.com...
> On Sep 13, 8:54 am, "homepc" <wiebe...(a)gmail.com> wrote:
>> Hello all
>>
>> I've noticed a loud squeaking noise coming from around the generator area
>> when I started my 2007 Corolla yesterday. After driving a short distance
>> it
>> stopped. I've also noticed during the last week or so, that the radiator
>> fan seems to turn on far more often than it did in the past. My car only
>> has a little over 7000 km so far as I only use it to run errands on my
>> weekends. Could it be that the water pump is failing already or that the
>> belts just need adjustment? I'm bringing in the car to the dealer
>> tomorrow
>> morning and just want to be prepared the best or worst case scenario. I
>> bought the car exactly 3 years ago next week so problem may or may not be
>> covered by warranty.
>>
>> Thanks!
>
> No idea, but if you weren't already planning to, please post the
> result later.
>
>
> The dealership kept my car overnight and the mechanic who checked it out
> said it was fine. The squeaking fan belt was caused by moisture. We had
> several consecutive days of light fog overnight.
>
> I was also told that the radiator cooling fan is computer controlled, and
> that it is not only triggered by the temperature of the motor coolant. I
> explained that the radiator fan would turn on moments after starting the
> car while the motor was just warming up. When I showed this to the
> mechanic, he just turned off the ventilation fan inside the car, and the
> radiator fan instantly turned off and stayed off. He explained that with
> higher humidity and temperature, the computer in the car may anticipate a
> higher load on the engine when the ventilation fan is turned on,
> regardless if the air conditioner is on or off, and when this happens, the
> radiator cooling fan turns on, even if the motor hasn't reached a high
> enough temperature.
>
> Funny, I've had the car for 3 years and have only noticed this quirk
> within the last couple of weeks. The weather this September has been
> hotter and way more humid than any month following last spring. I guess
> that explains it.
>
> Thanks for all the input!

How many electric cooling fans are in the engine compartment and how many
are on the outside of the engine compartment?


--

Ray O
(correct punctuation to reply)


From: homepc on 17 Sep 2009 11:19

"Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message
news:h8rj6n$rj6$1(a)news.eternal-september.org...
>
> "homepc" <wiebe008(a)gmail.com> wrote in message
> news:bC9sm.5738$6f4.427(a)newsfe08.iad...
>>
>> "matrixxx09" <matrixxx09(a)gmail.com> wrote in message
>> news:65155e6c-4750-425a-949b-d49f05d439ca(a)r33g2000vbp.googlegroups.com...
>> On Sep 13, 8:54 am, "homepc" <wiebe...(a)gmail.com> wrote:
>>> Hello all
>>>
>>> I've noticed a loud squeaking noise coming from around the generator
>>> area
>>> when I started my 2007 Corolla yesterday. After driving a short distance
>>> it
>>> stopped. I've also noticed during the last week or so, that the radiator
>>> fan seems to turn on far more often than it did in the past. My car only
>>> has a little over 7000 km so far as I only use it to run errands on my
>>> weekends. Could it be that the water pump is failing already or that the
>>> belts just need adjustment? I'm bringing in the car to the dealer
>>> tomorrow
>>> morning and just want to be prepared the best or worst case scenario. I
>>> bought the car exactly 3 years ago next week so problem may or may not
>>> be
>>> covered by warranty.
>>>
>>> Thanks!
>>
>> No idea, but if you weren't already planning to, please post the
>> result later.
>>
>>
>> The dealership kept my car overnight and the mechanic who checked it out
>> said it was fine. The squeaking fan belt was caused by moisture. We had
>> several consecutive days of light fog overnight.
>>
>> I was also told that the radiator cooling fan is computer controlled,
>> and that it is not only triggered by the temperature of the motor
>> coolant. I explained that the radiator fan would turn on moments after
>> starting the car while the motor was just warming up. When I showed this
>> to the mechanic, he just turned off the ventilation fan inside the car,
>> and the radiator fan instantly turned off and stayed off. He explained
>> that with higher humidity and temperature, the computer in the car may
>> anticipate a higher load on the engine when the ventilation fan is turned
>> on, regardless if the air conditioner is on or off, and when this
>> happens, the radiator cooling fan turns on, even if the motor hasn't
>> reached a high enough temperature.
>>
>> Funny, I've had the car for 3 years and have only noticed this quirk
>> within the last couple of weeks. The weather this September has been
>> hotter and way more humid than any month following last spring. I guess
>> that explains it.
>>
>> Thanks for all the input!
>
> How many electric cooling fans are in the engine compartment and how many
> are on the outside of the engine compartment?

Only one fan on the radiator and one ventilation fan behind the glove box --
why do you ask?
>
>
> --
>
> Ray O
> (correct punctuation to reply)
>
>


From: Ray O on 17 Sep 2009 13:18

"homepc" <wiebe008(a)gmail.com> wrote in message
news:5sssm.129181$nL7.17363(a)newsfe18.iad...
>
> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message
> news:h8rj6n$rj6$1(a)news.eternal-september.org...
>>
>> "homepc" <wiebe008(a)gmail.com> wrote in message
>> news:bC9sm.5738$6f4.427(a)newsfe08.iad...
>>>
>>> "matrixxx09" <matrixxx09(a)gmail.com> wrote in message
>>> news:65155e6c-4750-425a-949b-d49f05d439ca(a)r33g2000vbp.googlegroups.com...
>>> On Sep 13, 8:54 am, "homepc" <wiebe...(a)gmail.com> wrote:
>>>> Hello all
>>>>
>>>> I've noticed a loud squeaking noise coming from around the generator
>>>> area
>>>> when I started my 2007 Corolla yesterday. After driving a short
>>>> distance it
>>>> stopped. I've also noticed during the last week or so, that the
>>>> radiator
>>>> fan seems to turn on far more often than it did in the past. My car
>>>> only
>>>> has a little over 7000 km so far as I only use it to run errands on my
>>>> weekends. Could it be that the water pump is failing already or that
>>>> the
>>>> belts just need adjustment? I'm bringing in the car to the dealer
>>>> tomorrow
>>>> morning and just want to be prepared the best or worst case scenario. I
>>>> bought the car exactly 3 years ago next week so problem may or may not
>>>> be
>>>> covered by warranty.
>>>>
>>>> Thanks!
>>>
>>> No idea, but if you weren't already planning to, please post the
>>> result later.
>>>
>>>
>>> The dealership kept my car overnight and the mechanic who checked it out
>>> said it was fine. The squeaking fan belt was caused by moisture. We
>>> had several consecutive days of light fog overnight.
>>>
>>> I was also told that the radiator cooling fan is computer controlled,
>>> and that it is not only triggered by the temperature of the motor
>>> coolant. I explained that the radiator fan would turn on moments after
>>> starting the car while the motor was just warming up. When I showed
>>> this to the mechanic, he just turned off the ventilation fan inside the
>>> car, and the radiator fan instantly turned off and stayed off. He
>>> explained that with higher humidity and temperature, the computer in the
>>> car may anticipate a higher load on the engine when the ventilation fan
>>> is turned on, regardless if the air conditioner is on or off, and when
>>> this happens, the radiator cooling fan turns on, even if the motor
>>> hasn't reached a high enough temperature.
>>>
>>> Funny, I've had the car for 3 years and have only noticed this quirk
>>> within the last couple of weeks. The weather this September has been
>>> hotter and way more humid than any month following last spring. I guess
>>> that explains it.
>>>
>>> Thanks for all the input!
>>
>> How many electric cooling fans are in the engine compartment and how many
>> are on the outside of the engine compartment?
>
> Only one fan on the radiator and one ventilation fan behind the glove
> box -- why do you ask?
>>
>>
>> --
>>
>> Ray O
>> (correct punctuation to reply)
>>
>>

There are several different setups for radiator and condenser cooling on
vehicles with transverse mounted engines, and I was wondering which one your
car has.

Some have 2 electric fans mounted side by side on the engine compartment
side, 1 for the radiator and 1 for the AC condenser. The radiator cooling
fan is controlled by the engine coolant temperature sensor, and the AC
condenser fan is controlled by the AC circuit.

Some have 1 fan mounted on the engine compartment side, and 1 fan mounted in
front of the condenser. They are controlled the same way as the side by
side setup.

Another setup is to have 1 larger fan mounted on the engine compartment side
of the radiator, and it is controlled by a combination of demand by the
engine cooling system and AC system. It sounds like this is the setup in
your car.
--

Ray O
(correct punctuation to reply)


First  |  Prev  | 
Pages: 1 2
Prev: {BS} Latest Internet slander about Glenn Beck
Next: {BS} How many was that again?