Having problems with your 2004 Volkswagen Jetta ?

Over heating and hard to start - 2004 Volkswagen Jetta

Posted / edited by AnonymousUser on : 25-05-2020

Answers :

Thermostat needs to be replaced for overheat. If it didn't open, then coolant becomes stagnant then causes engine overheated. Once it was overheated, it destroyed the coolant temp sensor. The signal from this sensor will feed in your ECU to tell it to open your cold start valve to spray extra fuel into engine to assist the start. Replace the Coolant temp sensor for your start problem.
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