Heater core hose connection
 

I flushed the heater core today in my voyager. Is it possible to hook the hoses up reversed by accident? I don"t remember which one was on top and which the bottom. If I did would it cause a problem? Thanks in advance.

no not an issue there is not a check valve any where in teh system

Thank you so much for your response. I appreciate it. I flushed the whole system and refilled it. It now has no heat and is overheating. New thermostat put in. When it runs with the radiator cap off the coolant does not suck down at all, but flows out. One heater core hose is hot(bottom one) and the top one stays cold. If you have an advice or ideas what it could be I would be appreciative of the help.

did u put stop leak in it at one time?

Airlock - so bleed it , thousands of VIDS on youtube. In your case with a heater core flush make sure you :

- turn the heat setting high
- leave the cabin heater fan off [or low per digital switching or whatever]
- then continue per almost any video

Try this one

- I assume you did back flush the core and put about 2400RPM on it!