always too hot water temperature in traffic :(

[83stef]

hello

I have changed the thermostat and now the water pump.

but the city road the temperature is still too high
this morning 24°C/75F indoor my temperature on average is 103°C/217F
on highway the water temperature is 94 °C/201F on average...

the water level is ok
radiators in front are clean.
fans radiators in front OK (2 speed)

has prolonged the stop in a car park,
the temperature water is 100/103°C (212/217F)


I'm confused I do not find the origin of the problem.
if you have ideas ...
thanks

[JFP in PA]

Originally Posted by 83stef

hello

I have changed the thermostat and now the water pump.

but the city road the temperature is still too high
this morning 24°C/75F indoor my temperature on average is 103°C/217F
on highway the water temperature is 94 °C/201F on average...

the water level is ok
radiators in front are clean.
fans radiators in front OK (2 speed)

has prolonged the stop in a car park,
the temperature water is 100/103°C (212/217F)


I'm confused I do not find the origin of the problem.
if you have ideas ...
thanks

Have you pulled off the front fascia and cleaned out between the AC coil and the radiators? A lot of junk accumulates in there that is totally invisible when looking into the fascia openings:

[83stef]

Thanks you very much
I disassemble the radiators on the front (ac/engine) everything is clean on this side ...

[tonythetarga]

did you use fresh coolant? The fluid type makes a difference. You should be using a fluid compatible for Porsche.
What year car and what model?

[bcrdukes]

Originally Posted by tonythetarga

did you use fresh coolant? The fluid type makes a difference. You should be using a fluid compatible for Porsche.
What year car and what model?

I believe the coolant from VW/Audi is the same, no?

[tonythetarga]

All in the Porsche family. I would think they're compatible. Just meant you cant use off the shelf Prestone or something like that without checking if it works with German cars. You don't want it to coagulate or clog up or cause a problem with the aluminum cores.

[Mitch Leland]

I replaced my radiators with aftermarket all aluminum radiators. I've noticed an improvement in my temps with high ambient. Pelican sells the radiators...

Also you could dilute the coolant with distilled water, water is a better coolant that the anti-freeze. Naturally if you live in the cold parts of the country then you would have to adjust the coolant for your local wx needs.

I found that the right side radiator fan wasn't working, I would check the left side since it was convenient to the driver's side, but didn't bother to walk around and check the right side, assuming that if the left was working, the right side was ok as well... nah...

Is your engine room fan working? I wonder what makes the Porsche coolant at $25.00 a gallon special? I've been told that the orange coolant is compatible with aluminum engines.

[markp92692]

Hi Folks
As we quickly approaching summer in Los Angeles, with temps in the mid 90's I wanted to help improve cooling so I read this thread and decided to clean my radiators.

Wow what a shock to see approx 2lbs of leaves and trash. After the recent cleaning, I have noticed a slight temperature decrease. It does feel good to have this task complete.

I was hoping for some additional help with " how to hack " my fans systems - both Radiator and engine.

Does anybody have a step - by - step, on how to do this procedure ? ( pics nice also )

I would like to have a simple - always on solution , or if your willing to indulge in the switch method, also appreciated

I have read a few posts, on other forums, however I just don't grab the concept - or instructions.

any help is greatly appreciated,
Thank you Mark

[petrolblue83911]

What is the correct operating temp?

I'm not sure how accurate the dash gauge is

I thought 200-210 is normal, and that in traffic on a hot day, 205-215 or so is also normal

[JFP in PA]

Originally Posted by petrolblue83911

What is the correct operating temp?

I'm not sure how accurate the dash gauge is

I thought 200-210 is normal, and that in traffic on a hot day, 205-215 or so is also normal

The dash display is both inaccurate and non linear, so it is little more than an idiot light that moves.

For a factory set up, 210 (real temp, not the displayed) would be about average on a cool day.

[tonythetarga]

You should not need an 'always on' solution. Either you're not moving enough coolant (water pump) or you need more cooling capacity by adding a center radiator.