hey i think i have trouble w/the oil pump, after i turn on the datto i takes about 30 seconds for the oil light to turn off, could it be a bad pump?? or is there another posible cause for that??

Put a master gauge on the motor & check how much oil pressure it realy has. The pick up could be a bit blocked. How long since it has had an oil & filter change? Try puting an oil filter off a 2000 modle 4 cylinder camry (Z386) but get a genuine one from toyota. They screw right on & have good flow. I have done this in the past on all sorts of engines & it works good. Hope this info is helpful