Still trying to find
Join Date: Jun 2011
Location: United Kingdom
if the oil pump was broke, wouldn't the oil pressure warning light come on?, low power sounds like intake problem, weather its air filter MAF, which may need cleaning with isopropol alcohol, intake butterfly valve, or clogged fuel injectors, i would take apart the intake pipes, (from air filter to throttle valve).
also, check conditions of the 8 spark plugs
ticking noise could relate to the fuel injectors, you can hear them clearly on mine.
with the cooling, sounds like your temp sensor is gone or faulty connection, when you get that working, make sure your cooling temperature is doing its job, (10 mins or so to go from start to 90deg > stat opens and drops to 75-80deg)
hope this helps