![]() ![]() As long as you stayed below about 2500 RPM the coolant would not come out of the cap, but would rise to a little above the max level, but after a couple of miles at expressway speed, coolant was indeed coming out past the cap. After picking it up, I admit the symptoms were better. I don't think I have ever wished for a clogged radiator, but given the choice between that and a head gasket replacement, I'll take the radiator!Īfter leaving the car with my usual Volvo shop, the mechanic thought it was just a bad cap on the expansion tank. Anyway, thanks again! as soon as I find out the results of the compression test and the ultimate fix, be it head gasket, radiator or whatever, I will post here and let y'all know. After my guy replaced the leaking part the pressure transferred to the only other place it could get out, the cap of the tank. In retrospect, I wonder if the small leak in that piece of rubber hose was allowing just enough pressure to escape to keep the expansion tank from overflowing. That is why I put the Stant thermostat in the car. This was on Friday late, all mechanics were closed and no place to get "real" Volvo parts. He did the work I requested and the next day was the first time it ran hot, it just went from normal to hot in about one or two minutes. I found a couple of other minor things that needed replacement and took it to my mechanic. ![]() I then drove it for a week, checking the coolant a couple of times per day because of the leak (it only leaked a small amount). Nothing that would keep me from buying the car because it was priced well below the book value. They found a few things wrong, it needed ball joints, missing air guide, small coolant leak in the rubber part of the metal cooling line that runs in front of the firewall on the passengers side, etc. So I took it to a local independent Volvo shop that I don't know much about. The seller lived about two hours from the mechanic I use. The seller would not allow me to take the car to my usual Volvo shop to be checked out (I've owned 240's and 940's for years) because of the time and distance involved. To answer JPN's question, I have only owned this car about 2 weeks. He is going to perform a compression test this morning and that should answer the head gasket question. I just have to say it again, thanks to everyone for sharing their knowledge and experience! My mechanic did not get to the car until late yesterday, so I still do not know anything definitive. Anyone have any ideas? Maybe too much coolant? Maybe air in the system? The coolant looks uncontaminated, green as it should be, and the oil also looks good, and no white smoke from the exhaust, and the engine runs great. ![]() ![]() I also noticed that the small return hose that goes back to the thermostat housing seems to have coolant and air flowing from it back into the expansion tank, when the car is running, you can see enough through the white plastic of the tank to tell that itlooks likemostly air flowing back into the tank. All this time, the temperature gauge stays right where it should.After the car sits for a while, the coolant goes back down to normal levels in the tank. I replaced the thermostat, with a Stant, and I have only driven 20-30 miles since then, but after driving a short distance, 2-3 miles, the coolant expansion tank, which started out between min and max is full to the cap, and if I continue driving, it will force small amounts of liquid coolant past the cap, along with steam. After sitting a while it would be OK until the next time. Then quickly the gauge would go up and the engine would overheat. I thought I had a bad thermostat because it would go for miles, or even several days and the temperature gauge would stay steady, right in the middle of its range. Have I fucked my radiator? Should I take some coolant out? The coolant is now about a quarter down from the full line that I filled it to at cold.I have a problem with a 1998 S70 T5. I am pretty confident I have overfilled coolant but it's not coming out of the reservoir at all it is only coming out of the radiator. I think most of the spill was coolant although there was definitely some oil in there. I today took an actual look and there is coolant coming out the top of the radiator, I can provide pics but basically the whole top of the rad has some coolant and I started it today and as it heated up more coolant started leaking out the top. About a month ago I had a very small oil leak and was told by my trusted dealership it was a valve cover gasket but not super urgent so I assumed it was this that leaked. While at work my mom sent me a picture of a leak in the driveway. So 2 days ago I noticed my coolant reservoir was at the fill line so I topped it up (It was cold when I topped it up.) The next morning it was -16c and it was a rough start and took 2 tries but it did start. ![]()
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