Question about 2001 Saturn L-Series
I've changed the radiator heater core thermostat and fan module, car still runs hot, Ichanged
This problem is caused by the coolant temperature sensor and this will cause you to think the car overheated but the gauge isn't working properly as supposed to
Posted on Mar 23, 2014
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Posted on Jan 02, 2017
SOURCE: overheating 94 saturn sc
Check the upper radiator house. When the engine is cool this hose is cool and soft to a squeeze pressure. If you check the same hose while the engine is hot "use caution as this hose might be very hot" this hose shoud be hot and stiff to the touch (louded under pressure). Lack of either is normally a sign of a bad thermostat or a failing water pump. Also check that the water reservoir cap is not leaking, is only a $5 fix.
Posted on Dec 24, 2009
how about the coolant temp sensor, they had alot of problems with that sensor and also the plug for it,some have two of these sensors side by side, one for the gauge and the other for the fan, i would replace these first and go from ther good luck,
Posted on Apr 10, 2010
SOURCE: 1998 Saturn SL1 - I
As both hoses from the heater core are hot, there is no need to replace the heater core.
The problem will be in the heater control under the dash. I have no experience with Saturn, but I am responding to your problem so as not to remove the heater core.. That would be wasted time and money. The heater, A/C mixture control is the problem.
Someone else will need to guide you through the rest of the way.
Sorry i could not lead you all the way through.
Posted on Nov 17, 2010
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