Overheating 944 (83)

[berberianm]

I'm having alot of trouble with my 944 overheating.

I changed the waterpump, thermostat, thermofan switch, and radiator.
I've filled it with 50/50, bled the system and had the heater running, but it still overheats. The radiator stayed cool until I removed the thermostat and then it would just get warm. The hoses all get quite hot but the radiator doesn't get hot enough to turn on the fans.
I think I have a blown headgasket(contaminated oil)...can that cause a problem with circulation? Also, how likely is it that the block is cracked instead of a blown headgasket?
Engine runs smooth otherwise.
Any advice would be appreciated. Thanks


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Matt

[divezic]

I had a problem with overheating in my 84 944 which ended up being a clogged radiator.
Make sure that ALL your cooling components are good (new water pump or a questionable rebuild? possibly a defective thermostat) then make sure that the system is bled completely.
As for your contaminated oil, also consider your oil-to-coolant heat exchanger; it is notorious for blowing a gasket. About $40-$50 for a new seal kit and $150-$200 for labor.
Hope this litle bit of info helps.