power steering 'hiss'
Discussion
Chuffmeister said:
Sounds like air getting into the system. Maybe worth checking the hise connections. Any bubbles in the fluid?
Air cant enter the system if the res if full the pumps gravity fed
except if as follows.... Mac check the strainer in the res is not chocked (often missed and over looked) by soaking with cellulose thinners/carb/brake cleaner etc then reverse blowing it out with an air line till the solvent runs clean out through the large filler opening also check for collapsed or internal de-lamination (dont ask me how I found that one out) feed hoses from res to pump followed by some nice new fluid Dexron 2/3 will work great. My car developed a whine after a run out one day and refused to believe the pump was failing turned out to be an hose failing that had created a nice tongue of rubber restricting flow 
QBee said:
It can also happen if you have a fluid leak (perhaps the U bend?) and the fluid level has got low.
I can almost say for certain Mac would spot any leaks the moment they occurred
internal seal leakage from one chamber to another within the pinion assy can also cause hiss but we wont go down that road
ad that wont me Macs problem I am sure 
Edited by Sardonicus on Thursday 19th March 21:05
Sardonicus said:
Chuffmeister said:
Sounds like air getting into the system. Maybe worth checking the hise connections. Any bubbles in the fluid?
Air cant enter the system if the res if full the pumps gravity fed
except if as follows.... Mac check the strainer in the res is not chocked (often missed and over looked) by soaking with cellulose thinners/carb/brake cleaner etc then reverse blowing it out with an air line till the solvent runs clean out through the large filler opening also check for collapsed or internal de-lamination (dont ask me how I found that one out) feed hoses from res to pump followed by some nice new fluid Dexron 2/3 will work great. My car developed a whine after a run out one day and refused to believe the pump was failing turned out to be an hose failing that had created a nice tongue of rubber restricting flow 
SILICONEKID345HP said:
macdeb said:
Blokes, I seem to be getting a 'hissing' sound from steering wheel [PAS], any ideas how to cure?
I`m wondering if some of your hair dropped in when you topped the power steering up Edited by macdeb on Thursday 19th March 17:43


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