Power steering goes out, turn off car and power steering is OK for a little while then goes out again. Can't find power steering fluid input anywhere under the hood... 2006 chevy cobalt

how about the front end moving parts like ball joints and the strut towers bearings?? You have not given any make, model or year of vehicle so hard to really help further.

check your power stearing fluid level.

bleed power steering with engine off pour power steering fluid in the power steering reservoir until fluid stay at full mark on powersteering pump dip stick.wait few minutes then check powersteering fluid again if low add little more when fluid level stop dropping crank vechicle turn steering left to right with out a stop turn steering wheel all the way to the left to all way to right for minute until air bubbles leave the powersteering fluid. when steering wheel feel normal stop engine check check power steering fluid should be at full hot mark if fluid level dont drop air is out the system. dont overfill powersteering reservoir if so you will blow front seal.dont drive vechicle if steering dont feel normal have vechicle towed in garage.

more than likely it is just low on power steering fluid. system might have air in it now. so after fill power steering unit to proper level driver the car and check fluid level again. and add more if needed . I believe car should have motor running for when checking fluid, same as transmission.

Have you checked the power steering fluid level? The reservoir for the fluid will be at the front of the engine, where the belt runs the power steering pump. If it's low or out add a little power steering fluid till full, then start car and slowly turn wheels back and forth from stop to stop-not too ******* the stops (when the steering won't turn further that way...that's what I mean by stops)....Turn wheel one way full travel, then reverse and turn the other way. Check the fluid level again, and add as needed.
If fluid is not low, the belt may be too loose to make the power steering pump work, or you may have a bigger problem that needs professional attewntion.

YOU HAVE AIR IN THE POWER STEERING SYSTEM.YOU NEED TO BLEED POWER STEERING PUMP FIRST BEFORE DRIVING VECHICLE.CHECK POWER STEERING FLUID LEVEL ADD MORE POWER STEERING UNTIL REACH FULL COLD MARK..RAISE VECHICLE FRONT WHEELS OFF THE GROUND.START ENGINE LET IT IDLE WHILE TURNING STEERING WHEEL LEFT TO RIGHT NON STOP DONT LOCK OR STOP STEERING WHEEL KEEP TURNING IT SEVERAL TIMES CHECK POWER STEERING FLUID IF LOW ADD UNTIL YOU GET COLD MARK ON DIP STICK DONT OVER FILL POWER STEERING PUMP BLOW A SEAL.IF POWER STEERING FLUID LOOK TAN COLOR SYSTEM FULL OF AIR.TURN OFF IGNITION LET CAR SET FOR A WHILE CHECK FLUID LEVEL.IF STEERING WHEEL FEEL STIFF HARD TURNING DONT DRIVE CAR UNTIL YOU HAVE NORMAL STEERING.IF STILL HAVE AIR IN SYSTEM BLEED SYSTEM UNTIL AIR IS OUT.

CHANGING POWER STEERING PUMP YOU HAVE TO PLACE A DRAIN PAN UNDER THE VECHICLE. SIPHON OUT POWER STEERING FLUID WITH A SIPHONER DONT USE YOUR MOUTH TO SIPHON SWALLOWING POWER STEERING FLUID CAN BE FATAL MAKE YOU SICK.WHEN ALL POWER STEERING FLUID IS REMOVED FROM POWER STEERING PUMP.REMOVE DRIVE BELT.THEN REMOVE THE POWER STEERING PUMP.THEN YOU HAVE TO REMOVE THE POWER STEERING PUMP PULLEY THE NEW POWER STEERING PUMP DONT HAVE A PULLEY YOU HAVE TO HAVE REMOVE PULLEY FROM THE OLD POWER STEERING PUMP.YOU NEED A PUMP PULLEY REMOVER AND A PULLEY INSTALLER.YOU CAN TAKE OLD POWER STEERING PUMP AND NEW POWER STEERING PUMP TO A MACHINE SHOP.THEY WILL REMOVE PULLEY OFF OLD PUMP PRESS IT ON NEW POWER STEERING PUMP.THAT WOULD BE CHEAPER THAN BUYING THE PULLER AND INSTALLER.GO TO AUTO PARTS STORE BUY NEW HIGH PRESSURE LINE O RING GOES TO PRESSURE LINE GOING INTO POWER STEERING PUMP.ONCE YOU GET NEW PUMP READY PULLEY BEEN PRESSED ON.TAKE POWER STEERING PUMP HOME PUT IT ON. BLEED POWER STEERING SYSTEM.WHAT YOU DO WHEN YOU GET NEW PUMP INSTALLED HIGH PRESSURE LINE IN PLACE.PUMP BOLTED IN DRIVE BELT ON POUR POWER STEERING FLUID IN POWER STEERING PUMP UNTIL FLUID LEVEL STOP DROPPING AND YOUR LEVEL ON POWER STEERING DIP STICK AT COLD LEVEL.NOW START CAR UP LET IT IDLE FOR 3 MINUTES.THEN TURN OFF ENGINE CHECK POWER STEERING FLUID IF FLUID LEVEL DROP ADD LITTLE MORE UNTIL LEVEL ON DIP STICK ON COLD MARK DONT OVER FILL.NOW SAFELY RAISE SUPPORT FRONT OF VECHICLE. START THE ENGINE.TURN STEERING WHEEL FROM ALL THE WAY FROM LEFT TO RIGHT DONT STOP LOCK WHEEL .GO LEFT TO RIGHT SEVERAL TIMES.THEN TURN OFF ENGINE CHECK FLUID LEVEL.IF ALL IS GOOD LET VECHICLE BACK DOWN LET IT SIT FOR A WHILE CHECK FLUID AGAIN.DONT DRIVE VECHICLE IF POWER STEERING PUMP MAKE NOISES OR YOUR STEERING FEEL STIFF HARD TO TURN.JUST MAKE SURE FLUID LEVEL RIGHT AND DRIVE BELT TIGHT GOOD LUCK.

power steering fluid does NOT go anywhere near the boot.but when you fitted a new rack did you turn steering wheel fully left and right several times to prime the rack and then check the fluid.....half a quart is a lot of fluid to add to the system (change your mechanic ASAP)MY BICHON COULD DO BETTER....

YOU NEED TO BLEED POWER STEERING SYSTEM BY HAVING LOW FLUID AIR ENTER THE SYSTEM.PARK CAR ON SOLID LEVEL GROUND SAFELY RAISE SUPPORT VECHICLE ON JACK STANDS.YOU CAN LEAVE CAR ON GROUND BUT TURNING STEERING WHEELS BACK AND FORTH WILL WEAR SPOT IN TIRES.TURN STEERING WHEEL TO THE LEFT WITH THE ENGINE OFF.CHECK POWER STEERING FLUID.ADD MORE FLUID IF LOW.MAKE SURE FLUID LEVEL ON COLD MARK ON DIP STICK.THE YOU CRANK CAR UP LET IDLE LITTLE HIGH FOR 15 SECONDS.THEN TURN OFF ENGINE.CHECK POWER STEERING FLUID LEVEL MAKE SURE ITS ON COLD MARK AT DIP STICK.THEN YOU START THE CAR UP WHILE IDLING TURN STEERING WHEEL IN BOTH DIRECTIONS SLOWLY TO THE STOPS DONT HOLD IN STOP TURN STEERING WHEEL LEFT AND RIGHT FOR SEVERAL TURNS.STOP ENGINE CHECK FLUID IF FLUID TAN STILL HAS AIR IN SYSTEM.LET CAR SET A LITTLE WHILE TRY THE BLEEDING PROCEDURE AGAIN.THERE IS A REASON POWER STEERING FLUID WAS LOW CHECK ALL POWER STEERING HOSES AT POWER STEERING PUMP TO THE RACK PINION ASSEMBLY.

yeah if you ran it gry before its best to start fresh,replace the rack an pinion its all one piece the part should be any where from 150 to 220 labor ranging from 180 to 300 yout looking at anywhere from 500.00 up