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!

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:



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!

