Discussions related to engines, transmissions, rear axles, suspension & steering.
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Ok folks, what is up with the thermostat on a 48 288 ci? I went to check it and there was none in there. But there is a wire clip part way up the housing. It must be designed to hold something. There is also no clear indentation in the head or the housing that would hold a thermostat in place. I looked up the thermostat on a parts site, and it looks like a normal modern thermostat. I got into all this because it's been spewing water from the overflow tube when I shut it off after a drive. I also notice it gets hot when sitting idling at a light. I was going to remove the thermostat and flush the system. Any and all wisdom appreciated!
22 and 23 series tended to run bit hot so someone must have removed the thermostat to try and make it run cooler. On the packardinfo forum another poster recently said the stock thermostat was 145-150 degrees for those series with an optional 160 degree for cars in really cold climates. Keep in mind installing anything higher than a 160 would tend to make any tendency to overheat worse.
Thanks. I flushed the system and installed new antifreeze. Installed a 160 degree and it seems to be doing fine. Didn't know it called for a 145-150. I will keep track of it, and will get a 145 degree to have ready. I definitely don't live in a cold climate! I'm in Georgia.