Re: Overheating issues
Vac Advance actually working? Some times those things go out in less than a month.
New water pump have a cast impeller or stamped steel type. The cast ones are not that good at getting water moving when you need it.
Clogged up heater core? Check by disconnecting the unit with a bypass. Are you seeing any signs of rust in your coolant? You have to drain it to tell. Most all new radiator flushes have an ingredient called sodium citrate. I am sure it does not do a really good job.
A small layer of rust internally can cause big issues.
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