Ethan5150 wrote: ↑23 Apr 2024, 21:42 Hi folks, I have a 2006 S60R that's recently had coolant problems and I'm hoping to get your thoughts.
When I first got the car about 9 months ago, my mechanic noticed the expansion tank was getting ready to crack so I replaced it (OEM). Then about 3 months ago, the hose blew off the top of my radiator at which point I discovered the neck had apparently long since broken off so there were no longer ribs keeping the hose from slipping off - it was only getting like 3/4" purchase. This happened road-side so I did my best to get the hose back on, but it happened again a few days later and I realized I'd need a better solution. I then undertook to "repair" the neck by following the writeup here. It seemed to work for a while, but I occasionally noticed a small drip coming from my fix - usually after a long highway drive. I would top off the tank every time the "coolant low" message came on (usually a quart or less) but very shortly thereafter one of the main hoses running into the firewall blew out hard and left me stranded in the middle of nowhere. My mechanic replaced both of those hoses with OEMs I got from FCPEuro. The day after he replaced them I went for a drive and after a while, developed a leak at one of the clamps he had put on (he had done a pressure test before sending me on my way). So he tightened down the clamp and that fixed the leak. However, I'm still losing coolant - and I no longer see it dripping from my radiator neck fix (although I felt like I may have smelled it today, even thought I couldn't see anything). I added coolant twice today (not much, maybe a half quart each time.
Some additional details that may be of use:
* When I open the expansion tank when the engine is hot, coolant immediately rushes back in and brings the level up quite a bit. Is this normal?
* Ever since I purchased the car 9 months ago, it's stumbled a little when I first start it, which clears after maybe 15-30 seconds. My mechanic's assumption was it probably needs coils... but could this be a cracked cylinder?
* I'm not seeing any white smoke coming out of the tailpipe.
* When the coolant hose blew out and left me stranded, it happened right after I floored it to make a pass on the highway.
Am I screwed?
leave it overnite, open the coolant tank with engine cold, if theres air pressure the headgasket is leaking.