Hello, wonderful Volvo community! I have run into another coolant leak on my S40, I have already replaced 3 coolant hoses, two near the firewall and the lower radiator hose. Now I am getting coolant leaked onto my engine cover and the firewall and I am unable to locate the leak, has anyone else ran into this issue and if so how did you take care of it and where did it leak from?
Thanks a ton!

 

Clean the entire area thoroughly, and watch it like a hawk. Catch the leak as soon as it starts, and it should be simple to trace it back to the source.

 

Okay! I will when I do not have work, When I was leaving work tonight I saw a pool of water on the right side near the driver front wheel, Not too sure what's around there though.

 

sure its not the AC? how often do you need to top off the overflow tank?

 

Pretty sure its not the AC, I have to fill it every other day or so

 

I had similar frustrations with mine, it turned out to be the reservoir. Good luck.

 

Good to know! I was driving earlier this morning and overheated on the highway but was thankfully close to home and when I got home and checked under the hood near the tank there was coolant everywhere and I just replaced all the hoses and made sure that they were very tight so I knew it couldn't be that, Im looking into getting a new tank ASAP, your reply helped me narrow it down thank you!

 

its a good time to also replace the coolant reservoir cap and thermostat as part of the R+R.

 

Okay, I will be sure to replace the thermostat as well, the new tank comes with a new cap which is a big bonus!

 

Update time! Thank you all for trying to help me track down this darn leak, I realized my mistake, I cheaped out on an expansion tank from Oreillys and it had a design flaw that allowed air into the system, it was the connection going into the block near the turbo, on the tank itself. Instead of putting stops, the stop lines kept going, forcing the hose over them to align with the notch correctly. I ended up buying a new tank and hose from Volvo for only around $68 and it has fixed the god forbidden leak!