1994 Camry V6 Overheating Issue

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Old 14 Aug 2006, 04:18 pm   #1 (permalink)
andrewfq@googlemail.com
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Default 1994 Camry V6 Overheating Issue

Hi,

The car's been driving fine for months, however in the last few days
it's started reading overheating after about 30miles of driving to the
point that the temperature gauge will sit at about 3/4.

http://img251.imageshack.us/img251/7...mpgaugeiy6.jpg

It stays like this when the car is sitting idle after I have parked up.
However I've noticed that it also appears to be making a kind of
whining/droning noise as well, almost as though something is grating on
something else. It seems to be coming from the side of the engine where
the plastic cover is for the belt, at least that's where it sounds most
prominent.

http://img67.imageshack.us/img67/829...plasticvz7.jpg

Not an expert mechanic by any stretch of the imagination, but the
coolant is sitting just under full with Toyota's own coolant, I watched
underneath the car for ten minutes or so after I drove home one night
and there's no evidence of anything leaking to the ground, nor can I
see any sign of leakage in the engine bay itself, everything looks
pretty clean.

To be honest, I'm worried it might be a head gasket issue, or something
else I don't know enough about. The main fan on the radiator seems to
be spinning ok at what I presume to be the right sort of speed.

Apart from all this the car runs perfectly well with steering, power
and everything else normal.

Does anyone have any ideas I can check before I take it be looked at?
The noise in particular is worrying..

Thanks for any advice.


Andrew

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Old 15 Aug 2006, 01:08 am   #2 (permalink)
johngdole@hotmail.com
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Default Re: 1994 Camry V6 Overheating Issue

Is the radiator getting empited? Check only when engine is cold. Maybe
some bearing is failing, water pump or idlers, or a loose timing belt
scraping the cover and not turning the water pump.


andrewfq@googlemail.com wrote:
> Hi,
>
> The car's been driving fine for months, however in the last few days
> it's started reading overheating after about 30miles of driving to the
> point that the temperature gauge will sit at about 3/4.
>
> http://img251.imageshack.us/img251/7...mpgaugeiy6.jpg
>
> It stays like this when the car is sitting idle after I have parked up.
> However I've noticed that it also appears to be making a kind of
> whining/droning noise as well, almost as though something is grating on
> something else. It seems to be coming from the side of the engine where
> the plastic cover is for the belt, at least that's where it sounds most
> prominent.
>
> http://img67.imageshack.us/img67/829...plasticvz7.jpg
>
> Not an expert mechanic by any stretch of the imagination, but the
> coolant is sitting just under full with Toyota's own coolant, I watched
> underneath the car for ten minutes or so after I drove home one night
> and there's no evidence of anything leaking to the ground, nor can I
> see any sign of leakage in the engine bay itself, everything looks
> pretty clean.
>
> To be honest, I'm worried it might be a head gasket issue, or something
> else I don't know enough about. The main fan on the radiator seems to
> be spinning ok at what I presume to be the right sort of speed.
>
> Apart from all this the car runs perfectly well with steering, power
> and everything else normal.
>
> Does anyone have any ideas I can check before I take it be looked at?
> The noise in particular is worrying..
>
> Thanks for any advice.
>
>
> Andrew


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Old 15 Aug 2006, 08:06 am   #3 (permalink)
andrewfq@googlemail.com
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Default Re: 1994 Camry V6 Overheating Issue

Thanks for the tip, but how exactly do you check the radiator is
getting emptied??

Someone else suggesed the issue as you say may be the water pump
bearings.


Andrew

johngdole@hotmail.com wrote:

> Is the radiator getting empited? Check only when engine is cold. Maybe
> some bearing is failing, water pump or idlers, or a loose timing belt
> scraping the cover and not turning the water pump.
>
>
> andrewfq@googlemail.com wrote:
> > Hi,
> >
> > The car's been driving fine for months, however in the last few days
> > it's started reading overheating after about 30miles of driving to the
> > point that the temperature gauge will sit at about 3/4.
> >
> > http://img251.imageshack.us/img251/7...mpgaugeiy6.jpg
> >
> > It stays like this when the car is sitting idle after I have parked up.
> > However I've noticed that it also appears to be making a kind of
> > whining/droning noise as well, almost as though something is grating on
> > something else. It seems to be coming from the side of the engine where
> > the plastic cover is for the belt, at least that's where it sounds most
> > prominent.
> >
> > http://img67.imageshack.us/img67/829...plasticvz7.jpg
> >
> > Not an expert mechanic by any stretch of the imagination, but the
> > coolant is sitting just under full with Toyota's own coolant, I watched
> > underneath the car for ten minutes or so after I drove home one night
> > and there's no evidence of anything leaking to the ground, nor can I
> > see any sign of leakage in the engine bay itself, everything looks
> > pretty clean.
> >
> > To be honest, I'm worried it might be a head gasket issue, or something
> > else I don't know enough about. The main fan on the radiator seems to
> > be spinning ok at what I presume to be the right sort of speed.
> >
> > Apart from all this the car runs perfectly well with steering, power
> > and everything else normal.
> >
> > Does anyone have any ideas I can check before I take it be looked at?
> > The noise in particular is worrying..
> >
> > Thanks for any advice.
> >
> >
> > Andrew


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Old 17 Aug 2006, 12:11 am   #4 (permalink)
johngdole@hotmail.com
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Default Re: 1994 Camry V6 Overheating Issue

When the engine is cold and you remove the radiator cap, is it full of
coolant? Usually the water pump seal fails first then wreck the
bearing. So if there is the first sign of mysterious, gradual coolant
loss without a trace, examine the pump and if enough years/miles
replace it.

And you should have it check out and the needed repairs made.



andrewfq@googlemail.com wrote:
> Thanks for the tip, but how exactly do you check the radiator is
> getting emptied??
>
> Someone else suggesed the issue as you say may be the water pump
> bearings.
>


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Old 17 Aug 2006, 05:44 am   #5 (permalink)
m Ransley
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Default Re: 1994 Camry V6 Overheating Issue

A noise could be a water pump, overheating can also be a thermostat, I
would not drive it.

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Old 24 Aug 2006, 05:01 pm   #6 (permalink)
andrewfq@googlemail.com
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Default Re: 1994 Camry V6 Overheating Issue


m Ransley wrote:

> A noise could be a water pump, overheating can also be a thermostat, I
> would not drive it.


Well it was in Toyota on Wednesday, they replaced the water pump,
timing belt and thermostat.

The symptoms are still the same. I was back this morning voicing my
concerns over the issue. They'd said they'd investigate before they did
any work and then phone me if it needed any work to solve the problem
other than the above mentioned.

They never did....when I spoke to them earlier they were somewhat
apologetic, now they are thinking it's the drive belts, apparently the
technician though they were at the stage of maybe considering
replacement. Also thought it might be some play on the timing belt
tensioner. At least there was some movement on the water pump bearings.

If anyone wants a listen check out the video below.

http://us.f13.yahoofs.com/bc/44eca09...0Wi7EBjNqUYSpZ

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Old 25 Aug 2006, 01:06 pm   #7 (permalink)
johngdole@hotmail.com
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Default Re: 1994 Camry V6 Overheating Issue

You still have both the noise problem and the overheat problem? Then
the diagnosis Toyota dealer performed was obviously not a good one. You
certainly don't want to be in a parts-replacement mode to fix the
problems, especially at dealer prices.

Did they say anything about the condition of the hydraulic tensioner?
Was this what they were talking about in your post? Some of these are
known to go bad, causing the timing belt to slap around loose, but
these were usually on truck engines of a different series.

A loose timing belt can explain the overheat problem because the belt
slips on the water pump pulley and not turning the pump, as I mentioned
a couple of weeks ago. But they still have to isolate the problem to
either the belt drive system or the cooling system. And from what you
are saying, so far the dealer has no clue. That's too bad.


andrewfq@googlemail.com wrote:
> Well it was in Toyota on Wednesday, they replaced the water pump,
> timing belt and thermostat.
>
> The symptoms are still the same. I was back this morning voicing my
> concerns over the issue. They'd said they'd investigate before they did
> any work and then phone me if it needed any work to solve the problem
> other than the above mentioned.
>
> They never did....when I spoke to them earlier they were somewhat
> apologetic, now they are thinking it's the drive belts, apparently the
> technician though they were at the stage of maybe considering
> replacement. Also thought it might be some play on the timing belt
> tensioner. At least there was some movement on the water pump bearings.
>
> If anyone wants a listen check out the video below.
>
> http://us.f13.yahoofs.com/bc/44eca09...0Wi7EBjNqUYSpZ


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Old 25 Aug 2006, 01:22 pm   #8 (permalink)
mrdarrett@gmail.com
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Default Re: 1994 Camry V6 Overheating Issue


andrewfq@googlemail.com wrote:
> m Ransley wrote:
>
> > A noise could be a water pump, overheating can also be a thermostat, I
> > would not drive it.

>
> Well it was in Toyota on Wednesday, they replaced the water pump,
> timing belt and thermostat.
>
> The symptoms are still the same. I was back this morning voicing my
> concerns over the issue. They'd said they'd investigate before they did
> any work and then phone me if it needed any work to solve the problem
> other than the above mentioned.
>
> They never did....when I spoke to them earlier they were somewhat
> apologetic, now they are thinking it's the drive belts, apparently the
> technician though they were at the stage of maybe considering
> replacement. Also thought it might be some play on the timing belt
> tensioner. At least there was some movement on the water pump bearings.
>
> If anyone wants a listen check out the video below.
>


.....

Find a good independent mechanic. Ask around at Kragen, etc. who they
would recommend to work on a Toyota.

Michael

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Old 26 Aug 2006, 08:27 pm   #9 (permalink)
andrewfq@googlemail.com
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Default Re: 1994 Camry V6 Overheating Issue


mrdarrett@gmail.com wrote:

> andrewfq@googlemail.com wrote:
> > m Ransley wrote:
> >
> > > A noise could be a water pump, overheating can also be a thermostat, I
> > > would not drive it.

> >
> > Well it was in Toyota on Wednesday, they replaced the water pump,
> > timing belt and thermostat.
> >
> > The symptoms are still the same. I was back this morning voicing my
> > concerns over the issue. They'd said they'd investigate before they did
> > any work and then phone me if it needed any work to solve the problem
> > other than the above mentioned.
> >
> > They never did....when I spoke to them earlier they were somewhat
> > apologetic, now they are thinking it's the drive belts, apparently the
> > technician though they were at the stage of maybe considering
> > replacement. Also thought it might be some play on the timing belt
> > tensioner. At least there was some movement on the water pump bearings.
> >
> > If anyone wants a listen check out the video below.
> >

>
> ....
>
> Find a good independent mechanic. Ask around at Kragen, etc. who they
> would recommend to work on a Toyota.
>
> Michael


Saw a friend last night who knows quite a bit about cars. Loosened the
altenator and took the drive belts off, started the car without going
into gear and no noise....I think he said it's the tensioner that
controls the A/C - there's no A/C working in the car, and turning on
the a/c doesn't lock up the tensioner. seems to grind a little when
free spinning it by hand.

Personally, I would have thought that this is something that toyota
would have picked up...going to drop hints about them checking the
tensioners when they're doing the drive belt, give it a bit of hand
spinning, that way they'll hear it as well and know exactly which one
it is.

The heating issue seems to be gradually getting better, I was on a
50mile drive tonight and it only rose above half when I was stationary
in traffic or a car park. So I guess when they flushed the radiator for
the coolant it's obviously helped a bit, still not perfect atm.

Got a friend that I can go see, think he'll volunteer to do the
radiator for me it needs done. See what happens on Monday though.

I think my friend also said something about the clutch for the a/c or
something??? No idea and it's 2:20am....time for bed.

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Old 27 Aug 2006, 01:52 am   #10 (permalink)
johngdole@hotmail.com
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Default Re: 1994 Camry V6 Overheating Issue

That's good, at least your friends are solving the problems. Better
than the techs at the dealer.

andrewfq@googlemail.com wrote:
> Saw a friend last night who knows quite a bit about cars. Loosened the
> altenator and took the drive belts off, started the car without going
> into gear and no noise....I think he said it's the tensioner that
> controls the A/C - there's no A/C working in the car, and turning on
> the a/c doesn't lock up the tensioner. seems to grind a little when
> free spinning it by hand.
>
> Personally, I would have thought that this is something that toyota
> would have picked up...going to drop hints about them checking the
> tensioners when they're doing the drive belt, give it a bit of hand
> spinning, that way they'll hear it as well and know exactly which one
> it is.
>
> The heating issue seems to be gradually getting better, I was on a
> 50mile drive tonight and it only rose above half when I was stationary
> in traffic or a car park. So I guess when they flushed the radiator for
> the coolant it's obviously helped a bit, still not perfect atm.
>
> Got a friend that I can go see, think he'll volunteer to do the
> radiator for me it needs done. See what happens on Monday though.
>
> I think my friend also said something about the clutch for the a/c or
> something??? No idea and it's 2:20am....time for bed.


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