Yep...lifters
It sounds like a typical hydraulic lash adjuster/lifter noise. Could be caused by a number of things - low oil level, wrong oil weight, HLA's are worn out, low oil pressure issue, HLA's are fouled up from broken down oil. Try using an engine oil flush treatment and then perform a full oil and filter change. If the engine has never been flushed that you know of, it is worth doing. It should reduce valve train noise and prolong engine oil life.
Change the oil filter to a better quality wit an anti-drain back valve , change oil and up grade to 30w-50 oil viscosity
remove and check the leak back rate for the hydraulic followers
the problem is that the oil drains back from the valve train resulting in a noise until oil pressure is restored
SOURCE: Cadillac 2000 Deville Power Steering Pump
TRY REPLACING BELT, POSSIBLE CHEAPEST OPTION...BUT SOUNDS LIKE TWO PROBLEMS
THOU BELT AND RACK???
SOURCE: Power steering pump is clicking and whining
It seems who ever did the work may have removed the power steering pump to access the water pump and timing belt. After refilling they failed to bleed the air out or possibly left a return hose loose causing the pump to **** air hence the bubbles. The brown color in the fluid may indicate they have reused dirty fluid to refill the pump. Unfortunately if you have driven any distance with the air in the pump it will most likely need to be relaced.I would call the place who did the work and register a complaint.
SOURCE: power steering problem, noise coming from engine, 97 montero
Your experiencing the same thing my 02 is experiencing- your crankshaft pulley is slipping on the crankshaft. It only does it under load, i.e. turning steering wheel(loads the power steering pump) running heater blower on high with headlights on (loading the alternator) or running the a/c with blower (loading the a/c compressor and alternator). Turning off all lights, blowers, ac, etc and allowing the car to idle should kill the slipping until loaded again. This problem is very serious and very expensive if your don't catch it early. It require repairs ranging from tightening the crank to pulley bolt, to replacing the pulley AND your crankshaft if it is allowed to continue. if you cannot get it serviced immediately then do your best to keep loads off of your belts by driving with the blower off, A/C off, and lights used only when necessary. Also try to avoid extreme tight turns which load your power steering pump. Your repair, if not done asap, will cost you upwards of around $3k since the motor must be removed and completely torn down to replace your crankshaft and pulley. I would seek a tech who will exhaust every other method- i.e. sleeving, welding, etc. to effect a repair. Just don't put it off because it will only get worse...
SOURCE: power steering noise
The belt is almost assuredly to tight and needs to be loosened just a hair. It is hard sometimes to get the tension just right. Try looseneing it a bit and hopefully that will help. I have had the same problem in the past.
SOURCE: recently replaced all belts in my 2001now get squealing noise
belts in right pulley position? and air can cause squeeling
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