Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Did the reservoir come with the new pumps or are you using the original?
There's a screen in the bottom of the reservoir. If it's plugged up, this can cause the problem.
Also if there's a leak between the pump and the reservoir, it can suck air in.
It's possible but not likely that you got two bad pumps in a row. I wouldn't bet on it.