Question about Hyundai Motor 1996 Elantra

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1996 Hyundai temp issues.

I had a leak in my coolant system ( adding about a 1/2 gallon of antifreeze a month or so) and it was coming from around the water pump area.    I took it to a mechanic and had it pressure tested twice with no problems. They told me that some water pumps leak a bit after time. Offered to replace pump but informed me that it was a 6 hour job plus cost of part and that I may be better off just topping off the coolant weekly.    I decided to buy some radiator sealant (Prestone) and it took care of the leak! I was overjoyed....however.....    Since then (about two weeks) I have seen major fluctuations in my temperature gauge (runs very near red) when I am at a stop sign/light. As I drive the gauge returns to normal.    I have also noticed that the fan NEVER runs anymore. I can go for a drve for an hour, come home and park it, and no fan. Before the sealant the fan would be running after a 20 mile drive.    The last oddity that happened was yesterday. I was on my way home form work and after the first light the gauge was not going down like it normally does. I turned on the A/C on a whim and the gauge almost immediately went down.    So what *** you think? Sensor, thermostat, fan motor? I wish I could put a bullet in it and leave it for dead, but unfortunately that isn't n optiion.

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  • soap_box Oct 14, 2008

    Solved

  • soap_box Mar 04, 2009

    Replaced water pump and problem solved!

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I have had exatly the same problem with our Lantra, the issue can be two fold, the fan switch which is located next to the temperuture sender(has two wires going to it) can be faulty, I used an electrical splicer that has a metal piece in to short out the two wire, this solved problem one of power to the fans.

Part two was the fact that this was caused by one of the fans (main Fan) stopping, as the motor on this is a sealed unit, you will need to get a replacement fan if this is the issue.

But if you short out the two wire from the switch when the engine is hot, this will tell you wether you need to go further.

Hope this helps

Posted on Mar 31, 2009

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