SOHC Posted November 3, 2013 Share Posted November 3, 2013 I have had this problem a few times before after draining the cooling system and leaving it for a day or so with out any water, when I fill it up and run the motor the thermostat won't open anymore and is stuck shut. but put a new thermostat in and its sweet. Just put a new thermostat in the volvo but had to redo the water pump seal and now the bottom radiator hose gets hot as hell and the top one is cold. I have got all the air out. temp gauge shows its getting hot and it over flows from the cap. Any tricks to fix this problem? Quote Link to comment Share on other sites More sharing options...
Bling Posted November 3, 2013 Share Posted November 3, 2013 nvm. delete Quote Link to comment Share on other sites More sharing options...
AllTorque Posted November 3, 2013 Share Posted November 3, 2013 It is posible you have a air pocket under the themostat. Is there a heater hose or similar higher than the thermostat to let the air out as you put the coolant in? Otherwise try taking out the thermostat, fill to thermostat level, install thermostat, fill to top. Then just let it idle with cap off till no more bubbles come to the top 1 Quote Link to comment Share on other sites More sharing options...
SOHC Posted November 3, 2013 Author Share Posted November 3, 2013 I will have another go tonight and report back, I can squeeze the hoses and get most of the air out on this car Quote Link to comment Share on other sites More sharing options...
SOHC Posted November 3, 2013 Author Share Posted November 3, 2013 Yip it was air lock, let it cool right down and the level in the expansion tank went down, toped it up and its away. 1 Quote Link to comment Share on other sites More sharing options...
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