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Peugeot RCZ 2010 – Heater Cold & Temperature Drops While Driving

sassankh

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Sep 25, 2023
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Hey guys,





I have a 2010 Peugeot RCZ, and I’m having an issue with the engine temperature dropping while driving and the heater blowing cold air.





Here’s what I’ve checked/replaced so far:


✅ New thermostat (Checked with a computer, and it opens correctly when hot)


✅ New water pump


✅ No air in the system (Properly bled)





I also noticed that one of the hoses going to the cabin radiator is hot, while the other is cold.





Any ideas on what could be causing this? Could it be a clogged heater core, a failing temp sensor, or something else? Would appreciate any advice!





Thanks in advance! 🚗💨
 
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