As requested by a member of the forum, this is an overview of the cooling system on an 850. This is "to the best of my knowledge" and I have no mechanical training aside from just "learning by doing it" so if I am wrong about any of this, please let me know. I want everything I post to be accurate and reliable information. Thanks! Tracy

http://www.tracystruesoaps.com/tutor...ng_system.html

 

Very nice write up and some very good information. It sounds like you have everything correct from what I have read.

 

Thanks so much for taking time for this write up on the cooling system. Again, you have proven to be an excellent technical writer...
How does it relate to my problem? Well, I noticed that my expansion tank was leaking some coolant (after the pressure has built up) . A hair line crack developed on the top side of the tank, near the hose. I was concerned and needed to know which way the coolant was flowing. I replaced the tank, but I am seeing some coolant around the cap, which I think is well closed.
I have ordered a new cap and a set of hose that should be in before the weekend for a complete repair....I will keep in touch.
Thanks again.
jmmxc

 

need a scematic for the cooling system on a 96 volvo 850 non turbo, 5 cyl., including location of electronic sensors etc.