Question about 2003 Kia Rio
1. take the cap off (while cold!) and see if the fluid starts to move before the engine overheats, if it does not, then replace the thermostat. if it does then check the relay for the fan and/ or the fuse for the fan.
if the fan does not start up by the time it over-heats, then check the thermo-time switch with an ohm meter.
(high ohms while cold, good. low ohms while hot, good.)
Posted on Dec 19, 2008
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Posted on Jan 02, 2017
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