2003 Hyundai Tiburon Overheating and loosing antifreeze

FASTFINGERS580

MEMBER
2003 HYUNDAI TIBURON
6 CYL
FWD
AUTOMATIC
99,500 MILES

I can't find any leaks, added bar's leaks last night to the radiator just in case, hoses appear to be fine. How do I tell if it is my thermostat or waterpump? It runs fine for about 5 miles, then starts to really overheat, and my heat starts to blow cold. I pull over, let it cool, add more antifreeze and am fine for another 5 miles. It is cold here, temps only in the low teens.
Thanks!

3 Replies

IMPALASS

MECHANIC
3,112 POSTS

Hello

To better assist you is your model just the Tiburon or the GT and what is the engine size in liter

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Thursday, December 24th, 2009 AT 10:21 AM

FASTFINGERS580

MEMBER
2 POSTS

It is a GT and it has a 6 cyl 2.7 liter engine.

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Thursday, December 24th, 2009 AT 10:30 AM

IMPALASS

MECHANIC
3,112 POSTS

Hello �

Thanks for the info. . .. . .. . .

Do you see any visible leaks at all. . .. . ...from the water pump.

Do you see any visible leaks around the heads or exhaust.

Do you have white smoke coming from the exhaust pipe.

Pull a couple of plugs and see if you can see coolant

Check your oil level. . ..has it gone up and is milky

I don’t think it is your thermostat as your car runs fine as long as you have coolant.

The same with your heater. . .. . .it blows cold due to lack of coolant.

You have to be losing coolant somewhere and you may have a blown head gasket. If you are losing that much coolant that quick it is either running out or going out the tail pipe.

Is the passenger floorboard wet?

https://www.2carpros.com/topics/cooling-system/leaks

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

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Thursday, December 24th, 2009 AT 11:13 AM