If you have the original pump, its probably getting worn. If you have replaced it with one from Napa, Autozone, or any of those parts stores, those pumps are terrible. Suck it up and get one from a dealer or from Quadratec.com, though they are more. First, try flushing the fluid. Here's what to do: Disconnect return line from back of pump, and let it flow into oil pan. Disconnect coil wire so engine won't start. Now, While cranking engine, turn wheel back and forth, but hit stops gently. Then refil pump with fresh fluid. Crank some more. Cycle this about 3-5 times to get all the old fluid out, then close system, and top off. Jack up front end and turn wheels back and forth about 10 times to bleed-with engine running. Drive it a few miles. Steering will be wierd. Park it, let it cool for a few hours, and its done!