Question about 2005 Hyundai Sonata
Check your fuse and relay to the radiator fan, There going to be high amp fuse so most likely will be in the fuse box by the battery. If the fuse and relay is good, check the wire harness connection at the fans. The other thing to is to run the engine and turn on your A/C, the A/C should over ride the switch and turn on the fans. If the fans do turn on, inspect the radiator fluid, make sure it's at it's level and if it's never been serviced. It may be time, Orange antifreeze has a life of 150,000 miles or 5 years and the green antifreeze has a life of 30,000 miles and 1 year. The thermostat may also gone bad but i don't think at this case since your car only heats up while your stopped. If everything is working (fan) just replace the antifreeze 50/50 mix (Antifreeze/water), Water has great heat transfer but boils so antifreeze is added, and 100% antifreeze does not have great heat transfer and will gel when heated so the two have to be mixed 50/50 and if your not sure how to mix the two. You can buy them 50/50 mix and the capacity to your car total fill is 7.3 liter 4 cylinder/ 8.6 liter 6 cylinder.
Posted on Jul 03, 2009
Its possible that the auxiliary fan for the radiator is already worn out or is running at slow RPMs.. this will cause your car to run hot when not moving.. moving will cause wind to ram the radiator thus cooling it. so, basically, its faulty auxiliary radiator fan.. try changing the radiator motor
Posted on Jul 03, 2009
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Posted on Jan 02, 2017
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