1996 Saturn SC2 Fan cooling engine

Let's do this go over by your underhood fuse box you will see a a/c line between your battery and fender. On the a/c line there is a high/low switch unplug it there may be a little plastic safety tab you might have to remove to unplug it. Then start your car let it idle then jump across those two terminals of the high low switch connector you unpluged. The radiator cooling fan should come on and you should hear the a/c clutch kick in too. There should be alot of air coming out of the fan also. Look by your upper radiator hose where it goes onto the radiator right below that on radiator see if it's cracked and leaking. Also if your coolant cap hasn't been changed in a while get a new one there only like 6. Let me know what you find.

Iam sorry what I ment by jump it was take a paper clip while the car idles and use the paper clip to connect the two terminals on the connector. Let me know what happens.

I'm sorry I forgot to tell you that when the car is idling you need to have the a/c button pushed in and the inside blower fan on when you jump that connector I told you to jump. Let me know what you find.

The reason your cooling fan doesn't come on with your a/c is because your a/c need's to be repaired.The only reason I had you jump that connector was to test the fan fuse relay and fan motor which is good since the fan came on.Now for the fix I posted you a diagram of where the coolant temp sensor is it's screwed into the head.I want you to change it make sure you get a brass tipped one the plastic tipped one's crack there only like 10.When you can change it make sure the engine is cold and you will loose coolant.Also when you change it inspect your connector to it if it's corroded they usually turn blue or green when they are corroded.If it's corroded then you will have to change it too.Let me know how it goes.

The difference with running the a/c is the fan run's all the time with the a/c on. So if the car didn't over heat when the a/c worked then I would replace the coolant temp sensor like I explained in my last post. Also get a new coolant cap. If your coolant is still going low after that then I would perform a coolant pressure test on the system. If your going to recharge your a/c again then make sure you get some charge with dye in it so you can see where it's leaking. The a/c system hold's 24oz's total.

You already tested the fan motor relay all that when I had you jump that connector and you said the fan came on. The fan comes on when the coolant temp reaches 222 degree's and over. Let the car idle as long as the temp doesn't go into the red let it idle see if the fan come's on at about 3/4 on the gauge. Let me know what you find.

If you put new coolant temp sensor in then the fan should come on. The earlier saturns the fan didn't come on till the gauge reached 3/4 sometimes the tip of the red if the gauge was bad. They never changed the temp the fan come's on at on the later model's I think 1997 or 1998 they made the gauge's read lower and the fan's came on just over half. But the fan's still came on at the same temp 222-226 degree's. So using the gauge isn't going to work to tell what temp the engine is. Did you ever change the coolant cap like I asked you too?Also once you get the radiator replaced then you can check and make sure the fan motor relay and wiring work like I told you in a earlier post. Then let your car idle and watch for the temp gauge and let it go above 1/2 way up to 3/4 and see if the fan come's on.