1995 Camry engine temperature

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Old 08 Dec 2008, 08:33 am   #1 (permalink)
RD
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Default 1995 Camry engine temperature

My 4 cyl engine has had the thermostat (Toyota) replaced but the engine
still is very slow to heat up. It runs at about 8 o'clock rather than closer
to 9 o'clock. This even with the outdoor temperature at 0 degrees C or 32 F.
The system has been pressure tested. If the thermostat was installed
backwards it would over heat correct? So, what could it be?

What is the actual temperature that should be exiting the engine? I have
access to a laser thermometer.

My fuel economy is awful and I suspect it is due to the cold engine
temperature.

Robin


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Old 08 Dec 2008, 09:50 am   #2 (permalink)
ransley
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Default Re: 1995 Camry engine temperature

On Dec 8, 8:33*am, "RD" <dosvader2...@hotmail.com> wrote:
> My 4 cyl engine has had the thermostat (Toyota) replaced but the engine
> still is very slow to heat up. It runs at about 8 o'clock rather than closer
> to 9 o'clock. This even with the outdoor temperature at 0 degrees C or 32F.
> The system has been pressure tested. If the thermostat was installed
> backwards it would over heat correct? So, what could it be?
>
> What is the actual temperature that should be exiting the engine? I have
> access to a laser thermometer.
>
> My fuel economy is awful and I suspect it is due to the cold engine
> temperature.
>
> Robin


My camry doesnt heat nearly as fast as my Volvo, the camry might be
3-4 minutes to 110 [110f is my OD lockout temp] and 8 to 160 at 20f,
the thermostat is 195? then near 180-195 is what hoses should be,
Normal on my older ones has always been like 8oclock. Did it work
better with a new thermostst, and of course you saw it put in
yourself. I paid once and it wasnt done and I was cold all winter ,
here it goes to -20f. Any indication like a gasket you can see is new.
At 32 you should get some heat after 3-4 minutes, or is antifreeze
more than 50-50, maybe valve to heater core doesnt close, is it temp
or interior heat is your issue, interior heat could also be a clogged
heater core. Was it better before?
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Old 08 Dec 2008, 02:02 pm   #3 (permalink)
RD
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Default Re: 1995 Camry engine temperature

I do get heat as the temperature rises. I am more concerned about engine
temperature. What should the temperature be as it exits the engine? I don't
know what the thermostat is rated for, Toyota only had one for the engine. I
am sure it was better a couple years ago.

Robin

"ransley" <Mark_Ransley@Yahoo.com> wrote in message
news:479b2082-038c-4e04-9340-0eaeec0fc38b@z1g2000yqn.googlegroups.com...
On Dec 8, 8:33 am, "RD" <dosvader2...@hotmail.com> wrote:
> My 4 cyl engine has had the thermostat (Toyota) replaced but the engine
> still is very slow to heat up. It runs at about 8 o'clock rather than
> closer
> to 9 o'clock. This even with the outdoor temperature at 0 degrees C or 32
> F.
> The system has been pressure tested. If the thermostat was installed
> backwards it would over heat correct? So, what could it be?
>
> What is the actual temperature that should be exiting the engine? I have
> access to a laser thermometer.
>
> My fuel economy is awful and I suspect it is due to the cold engine
> temperature.
>
> Robin


My camry doesnt heat nearly as fast as my Volvo, the camry might be
3-4 minutes to 110 [110f is my OD lockout temp] and 8 to 160 at 20f,
the thermostat is 195? then near 180-195 is what hoses should be,
Normal on my older ones has always been like 8oclock. Did it work
better with a new thermostst, and of course you saw it put in
yourself. I paid once and it wasnt done and I was cold all winter ,
here it goes to -20f. Any indication like a gasket you can see is new.
At 32 you should get some heat after 3-4 minutes, or is antifreeze
more than 50-50, maybe valve to heater core doesnt close, is it temp
or interior heat is your issue, interior heat could also be a clogged
heater core. Was it better before?


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Old 09 Dec 2008, 06:05 am   #4 (permalink)
ransley
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Default Re: 1995 Camry engine temperature

On Dec 8, 8:33*am, "RD" <dosvader2...@hotmail.com> wrote:
> My 4 cyl engine has had the thermostat (Toyota) replaced but the engine
> still is very slow to heat up. It runs at about 8 o'clock rather than closer
> to 9 o'clock. This even with the outdoor temperature at 0 degrees C or 32F.
> The system has been pressure tested. If the thermostat was installed
> backwards it would over heat correct? So, what could it be?
>
> What is the actual temperature that should be exiting the engine? I have
> access to a laser thermometer.
>
> My fuel economy is awful and I suspect it is due to the cold engine
> temperature.
>
> Robin


My dealer had 2 different temp thermostats in stock, I think a 180 and
195 but am not sure, and fans dont run in winter.Mine cant go in
backwards, if it could it would overheat bad.
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Old 09 Dec 2008, 08:22 pm   #5 (permalink)
johngdole@hotmail.com
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Default Re: 1995 Camry engine temperature

So you are getting heat but the reading is low? Good amount of heat or
little from the vent?

You need to rule out the gauge is giving you the wrong reading. You
can do this by placing a (preferably digital thermocouple) thermometer
at the outlet. (where the 2-wire coolant temperature sensor and the 1-
wire temperature gauge sensor are located). You should be able to read
within a few degrees of thermostat rating temp when it opens.

IIRC the 2-wire deal is ~$20-ish and the 1-wire deal is ~$10-ish?
Check Autozone prices.



On Dec 8, 6:33*am, "RD" <dosvader2...@hotmail.com> wrote:
> My 4 cyl engine has had the thermostat (Toyota) replaced but the engine
> still is very slow to heat up. It runs at about 8 o'clock rather than closer
> to 9 o'clock. This even with the outdoor temperature at 0 degrees C or 32F.
> The system has been pressure tested. If the thermostat was installed
> backwards it would over heat correct? So, what could it be?
>
> What is the actual temperature that should be exiting the engine? I have
> access to a laser thermometer.
>
> My fuel economy is awful and I suspect it is due to the cold engine
> temperature.
>
> Robin


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Old 10 Dec 2008, 08:15 am   #6 (permalink)
RD
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Default Re: 1995 Camry engine temperature

What temperature should I be seeing?

<johngdole@hotmail.com> wrote in message
news:b1ae5dab-76b8-4742-8381-f981ba284459@w1g2000prm.googlegroups.com...
So you are getting heat but the reading is low? Good amount of heat or
little from the vent?

You need to rule out the gauge is giving you the wrong reading. You
can do this by placing a (preferably digital thermocouple) thermometer
at the outlet. (where the 2-wire coolant temperature sensor and the 1-
wire temperature gauge sensor are located). You should be able to read
within a few degrees of thermostat rating temp when it opens.

IIRC the 2-wire deal is ~$20-ish and the 1-wire deal is ~$10-ish?
Check Autozone prices.



On Dec 8, 6:33 am, "RD" <dosvader2...@hotmail.com> wrote:
> My 4 cyl engine has had the thermostat (Toyota) replaced but the engine
> still is very slow to heat up. It runs at about 8 o'clock rather than
> closer
> to 9 o'clock. This even with the outdoor temperature at 0 degrees C or 32
> F.
> The system has been pressure tested. If the thermostat was installed
> backwards it would over heat correct? So, what could it be?
>
> What is the actual temperature that should be exiting the engine? I have
> access to a laser thermometer.
>
> My fuel economy is awful and I suspect it is due to the cold engine
> temperature.
>
> Robin



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Old 11 Dec 2008, 08:35 pm   #7 (permalink)
johngdole@hotmail.com
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Default Re: 1995 Camry engine temperature

The normal thermostat should be 180 deg F, I wouldn't use the lower
temp ones, such as the ones sold by TRD and aftermarkets for racing.

So when the thermostat opens, the temperature at the outlet housing
should be approximately 180 degrees. Be careful of moving engine
parts.

You should also check the readings from both the coolant temperature
sensor and the gauge temperature sender. The ohms curve vs temp
example is on Autozone's free repair guide. Also in repair manuals you
can use in parts stores.

Free repair guide:
http://www.autozone.com/shopping/repairGuide.htm

Free loaner tools with deposit:
http://www.autozone.com/in_our_store...oan_a_tool.htm



On Dec 10, 6:15*am, "RD" <dosvader2...@hotmail.com> wrote:
> What temperature should I be seeing?

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