Re: Losing Coolant
Originally Posted by 05JGCwolfe
well, I replaced the radiator cap. Things looked great and then yesterday while I was sitting with the engine idling for about 5 minutes I hear a chime go off and the engine temp was all the way to "H". I immediately turned off the engine and let it cool. I looked at the reservoir and it showed full. After about 20 minutes of cooling I loosened the cap and the pressure just gushed out and the coolant in the radiator just depleted down to nothing. Luckily I had a gallon of coolant to add... my issue here is that if it is holding that much pressure, could the hoses be bad. I will definitely check tomorrow for any signs of a bad pump and/or thermostat. I'm getting the feeling, though, that with 137,000 miles I'm probably looking at replacing pretty much the entire coolant system to make sure that I get this problem resolved... wish me luck guys and thank you all for your help/input
That much pressure means the water pump is pushing the coolant to build the pressure but it's probably not correctly circulating due to a stuck thermostat. Either that or you have a blockage somewhere (likely the radiator).
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