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Old Sep 14th, 2021, 23:03   #14
taxi driver
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Last Online: Sep 11th, 2023 15:06
Join Date: Dec 2004
Location: Northants
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Quote:
Originally Posted by cheshired5 View Post
Assuming the cooler passenger side is a flap/motor not directing enough warm air, it sounds like a lazy coolant thermostat not opening soon enough and/or wide enough.

After you next go for a run, check both heater coolant pipes at the back of the engine bay and see if they're equally too hot to hold.
If they feel the same high heat, the heater core is circulating fine.
If one pipe is noticeably cooler, the heater core needs flushing and the thermostat will hopefully be ok.

Also feel the radiator top and bottom hoses.
The top hose should be too hot to hold all around it.
The bottom radiator hose should be cooler but cool.
I have already had a genuine volvo thermostat and genuine volvo temp sensor fitted. Unfortunately my engine is one of the few engines to have thermostat at the rear of the engine.
incidentally does anyone know what temp the engine reaches when carrying out a regen?

Last edited by taxi driver; Sep 14th, 2021 at 23:06.
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