I wanted to know where the power steering fluid filter is,so i can replace if it is clogged,cause when i check the fluid level it does not seem to be circulating and the reading does not come of the cold mark it also does not appear to be warming up and before i changed the pump you could hear it pulling fluid into the pump as i added it and now it appears to befor lack of a better wordstagnant

did you check level and condition of trans fluid if low or no fluid will cause no movement -slippage--burn up trans

no filter pump over heating or rack problem

your power steering pump may be failing, the system is restricted check for clogged filter and check pump pressure, the steering gear (box or rack) may also be binding, check also for worn ball joints or bent links.

CHECK POWER STEERING FLUID LEVEL.SOUND LIKE ITS VERY LOW CAUSING CAUSING MORE AIR SYSTEM.WHICH WILL CAUSE FOAMING.LET VECHICLE SET UNTIL AIRATED FLUID SETTLE DOWN.TURN STEERING TO THE LEFT.CHECK POWER STEERING FLUID LEVEL.ADD FLUID TO COLD MARK LEVEL ON DIP STICK.CRANK UP VECHICLE.TURN STEERING WHEEL LEFT TO RIGHT WITH OUT STOPPING SEVERAL TIMES.THEN CHECK POWER STEERING FLUID.DOING THIS BLEEDS AIR OUT OF THE POWER STEERING SYSTEM.

the hard starting problem you're describing could be one or a combination of many things. one of the most common is a lack of routine maintenance. have you had a tune up done within the last 15,000 miles or so? old spark plugs or a clogged fuel filter, which would commonly be replaced during a tune up, would both cause a hard start. It does sound from the symptoms you've described as though you could have a low power steering fluid level situation. to check it, find the cap under the hood with the picture of a steering wheel on it and unscrew it. there should be a dipstick on the inside of the cap with low and high level indicators. check the level and check to see if the fluid is black. it's a dark color when it's fresh but you should be able to see through it if you dab some onto a white paper towel. another cause for the noise would be a kinked power steering hose, or even a faulty power steering rack. if you notice a leak from the pump, lines or rack you can try some stop leak additive, available at an auto parts store. this swells rubber o-rings and gaskets used in the system causing the seal to tighten. if this doesn't stop the leak, you will have to get in there and replace some parts. I hope this helps and good luck!

You need to check the the power steering resevior located under the hood, the fluid level may be low, and a possible leak, if low you will need to add some power steering fluid, the fuel consumption maybe in need of a tune-up oil change, spark, plugs, fuel filter, air filter.

Make sure u check the level with the car running. If the fluid level is still good and still have a steering wine. you have a fluid restriction. This would involve replacing the power steering resivior. The filter screen gets clogged and causes a restriction hope this helps.

Check your power steering fluid level and if it has never been replaced you may want to. The tricky thing about replacing the power steering fluid is that it does not have a drain plug for the fluid. What I have done in the past was to siphon the fluid out with a turkey baster from the dollar stop since it's just going to be discarded, then replace the power steering fluid that has been removed. The serpentine belt may need to be replaced also. 
The fuel economy could be cause by many things, but the common is dirty MAF sensor, throttle body, and air filter. Clean the MAF sensor with a can of MAF sensor cleaner and the throttle body with throttle body cleaner and replace the air filter. As for the MAF and throttle body cleaner, just follow the instruction on the cans or ask the parts store for advice such as Auto Zone. Auto Zone can give you the step by step instruction do getting the job done. 
Repcap: Check the power steering fluid level and try to replace some of the fluid. Replace the serpentine belt if needed after inspection,look for cracks on the inside of the belt where the ribs are. Clean the MAF sensor and throttle body Inspect and replace the air filter if it's been in there for 1 year or 30,000 miles.
Good luck and hope this helps.

The power steering fluid will aerate (churn and make bubbles) if the power steering fluid is overfull or underfilled.

If the steering is making a binding sensation, causing excess motor drag, then it's probably low.

Just go to auto parts store and buy their recommended fluid. It's about $3/quart usually. Some auto makers require very specific fluid for their cars, but for a Nissan, it should be somewhat standard.

There should be a dipstick that is marked with the proper fluid level on your power steering pump. It'll be marked HOT and COLD, which of course corresponds with when you're checking the fluid. If you haven't driven the car and it's morning time, check the level with COLD. If the car has been driven and is warmed up, then check it against HOT.

Before you replace the pump, check the filter located inside the oil tank. This filter cleans the oil before going to pump. REMEMBER that Audi uses a special oil!!! Not your normal power steering fluid! Mixing them could cause damage to the entire system!