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-   -   Some cooling system ???s (http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/173754-some-cooling-system-s.html)

MikeCT 07-22-2004 10:10 AM

Some cooling system ???s
 
What type of anti-freeze should I use. I know it needs to be phosphate free but what brand(s) is best?

I was wondering were the temp gauge should read if you have the regular thermostat. I'm planning on replacing the one I have but it's the low temp thermostat and I hear they aren't good for your car unless they are used for racing.

UconnTim97 07-22-2004 02:14 PM

Mine stays at the middle mark, unless I am in traffic, then it goes up to the third mark before the fans turn on.

a.n.other 07-22-2004 02:39 PM

Mine used to stay just around the first line if i'm moving and then go to the second (middle) line in traffic untill the fans kicked in and it went back to the first line and fans switch off. When i replaced my broken regular-temp fan thermoswitch with a low temp switch it would warm up to just above the first line and then the fans would kick in and never switch off. I'm afraid I don't know what thermostat i have, but i've just bought a new regular fan-switch and just getting round to putting it in.

MikeCT 07-22-2004 05:15 PM

thanks.

burkeb03 07-25-2004 03:03 PM

My intentions are not to hijack this thread, but I too have a couple related questions.

I have fairly recently aquired an 84 944, and it is common for my temp to hang around the 3rd bar. I feel that this is running a little too warm. I plan to have it looked at within the next week when I find a shop around here, and have the coolant system flushed and a general checkup. Anyone recommendations as to how I could have this running cooler? From the sound of it, everyone elses is running cooler. I am rarely at the halfway mark after a few minutes of running. Thanks.

SoCal Driver 07-25-2004 03:20 PM

The 944 heats up fairly quickly. The most common failure is the temp switch in the radiator. On the early 944's it's as much the wires coming lose and corroding as it is a switch failure. Next is the thermostat in the water pump. A loose timing belt will not drive the water pump at speed especially if there are oil leaks from the front seals.

Then toward the less common failures are the fans themselves. These are three blade units on the early 944's. They also have an unsealed front bearing that will seize up. This burns out the motors and blows the fuses. Fuses 3 and 5 on the 8 fuse board are for the cooling fans. The relays can fail. See http://www.clarks-garage.com/shop-manual/cool-01.htm or http://www.clarks-garage.com/shop-manual/cool-03.htm for more information


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