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Re: Coolant problem?
Chances are it's all from the pump.
Easiest pump you will ever do.
Loosen the pulley bolts with a quick snap of the wrench, do that with the belt still on, it helps hold the pulley still. Take the belt off, take the pulley off, there is about 6-8 small bolts that hold the pump to the casting, remove them, tap the pump with a mallet to break the old gasket seal and remove it, clean up the mounting surface (don't scratch the casting, be gentle, it's soft aluminum), then mount up the new one...
You'll want to fill the system with the bleeders open, close it up and let it run about 10 minutes, then stop the motor and let it sit for about 10. Carefully open the radiator cap and bleeders, refill, close it up and road test. If the gauge spikes or wanders a lot, you still have some air to purge, repeat until it runs a steady temp.
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