I would not recommend a blockage additive, rarely do they solve any problems. Its more than likely your water pump my friend just got done changing his on his turbo pt with 150K and it was totally frozen up and you would have had no idea until you tried to spin it. When was the last time you changed your antifreeze if its been more than 4 years you will want to change that out. I believe they used Dex-cool in those from the factory and that isnt very good for your system anyway. I would change the water pump, If I had to guess your water inst circulating coolant though the system. Iv disassemble cars with 200k miles and found the water pump impeller fins totally corroded away, so if its never been replaced by this point its time anyway. After that I would take it somewhere and have the antifreeze pressure flushed out of your system to remove that stop leak and all the old Dex-cool. You can also try using a pressure tester on your radiator cap to see if its possibly the head gasket.
Tuesday, April 8th, 2014 AT 6:54 AM