2001 Kia Optima overheating

2001 KIA OPTIMA
99,275 MILES • 4 CYL • FWD • MANUAL
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JONBARRSMITH
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  • 1 POST
i reciently had my oil changed and the car was running fine. i was driving down the road and my temp went from normal to hot in seconds i have look for leaks and cracks and found nothing but it is still overheating and i dont know what it is
Jun 5, 2008 at 1:06 PM
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RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Find the thermostat and replace it for a start-that don't work do below

Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat,Pressure test the Rad. cap,Clogged radiator,Fan clutch,Radiator electrical fan,collaspe hoses,water pump.
Jun 5, 2008 at 3:17 PM