Question about 2004 Kia Spectra
What can cause a Check engine code P0128 to come back after it was fixed once. Coolant sensor and thermostat were replaced and no check engine light for about 2 weeks.
P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature.)
Meaning the regulating temperature is higher than the themostat cooling temperature . you may have to replace the Coolant sensor again. or maybe both. Sorry !
Posted on Jan 06, 2010
I'd check and clean all the grounds in the engine compartment. check the thermostat. make sure you don't have a coolant leak the sensor reads when it is immersed in coolant it won't read steam.
Posted on Oct 05, 2014
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