Question about 1998 Saturn SL

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I have a 98 Saturn SL1 automatic. I just replaced the map sensor and am now trying to figure out why my radiator fan waits till the car is super hot to kick on then it kicks off after a min or two. It doesn't stay on very long. I bought a new fuse for the fan but I haven't had a chance to put it in yet. I'm needing a diagram for it. I have no money to purchase one nor time to go to a dealer as I am a mother of 3. I'm assuming my issue with the antifreeze light coming on is connected. It keeps saying its low when it is not. I'm not losing any coolant.

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If the fan is coming on then the fuse is good. It could be a temperature sensor, thermostat or water oump. The fan usually comes on before 220 degrees. does the fan come on with the air conditioner?

Posted on May 25, 2011


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My saturn 1994 s12 is overheating even after i changed the water pump.

How hot is it getting in degrees F? Some electric fans won't even turn on, till around 220 degrees F. Does the fan turn on at all?
As far as overheating, does the coolant recovery reservoir fill up in a hurry?
Sometimes after opening up the cooling system, you get air in the system that may cause temp gage to react.
What about your thermostat? Did you check for coolant flow through the radiator? Another thought might be a head gasket issue, I'd check everything else first.

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Took thermostat out but still runs hot after 30 miles. It is a 1993 saturn sl1

Do a presure test on the radiator cap. The radiator cooling fan should be coming on regardless of heat up so listen for it to come on. If it isn't coming on, you need to unplug the coolant sensor by the top radiator hose at the engine block, then with key on, engine off, take a paper click and jump the connector in your hand. The fan should start at this point. If it doesn't you need to jump the fan with jumper wires from the battery by uplugging the connector at the fan and see if it will run. If it doesn't, you need to replace the fan. If all of this is working you need to have a presure test done on the cylinders by pulling all of the plugs. The pressures should be the same. If 2 cylinders beside each other is low, you most likely have a blown head gasket that will need to be replaced. Make sure you do the other test first and make sure that the radiator cap is sealing correctly.

Jul 10, 2010 | 1993 Saturn SL1

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