Can the insert to the water pump go bad and still be able to turn

Asked by Feb 15, 2017 at 05:51 PM about the 1999 Cadillac DeVille

Question type: Maintenance & Repair

It's been over heating removed the
thermostat and is still over heating new
resvore will the water pump insert solve my
problem

2 Answers

87,445

I don't know what insert you are referring to but it sounds like the water pump needs to be changed. Put in a new thermostat also. When refilling, open any bleeder valves on top of the engine until coolant comes out, then close it, then top it off. Then purge the cooling system from air pockets after that.

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81,515

If you have a Northstar have the cooling system pressure tested and tested for exhaust gases in the coolant before you put any money in it. Sooner or later all Northstar engines blow head gaskets. If that's the case here you're looking at upwards of $3500 to fix it. Not worth it in my opinion! HTH. -Jim

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