Coolant not returning to radiator (new cap, new overflow hose, new radiator, etc)

brook_k2000_31374
Tue, 17 Oct 2023 23:37:35 +0000
Maintenance/Repairs

Simply put, my issue is my coolant is not flowing back into my radiator from the overflow at the end of the day. I recently replaced the radiator and coolant temp sensor.

So far to fix it I have: replaced the radiator cap and replaced the overflow hose between the reservoir and radiator. I have gathered in my looking around online that this is occurring because for some reason there’s a lack of vacuum in the coolant system. I’m not sure where the air could be coming from but, a couple important things to mention:

-I dont see any of the usual evidence that the head gasket is leaking.

The engine does not overheat anymore now that I’ve replaced the coolant sensor

It does, however, read a lower temp than it used to before the radiator was replaced. and this will fluctuate up and down between warm and not-so-warm. lol Despite this, hot air does come out of the vents when i turn the temp up.

So anyone got any idea what the solution to this mystery is?

26 posts - 9 participants