power steering whine noise
12-30-2018, 11:41 AM
#1
Registered User
Thread Starter
Join Date: Dec 2018
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
power steering whine noise Hi all Pontiacers!)
Read a lot of threads about this issue but did not see similar to mine.
I have 3.8cc 2001 formula, recently noticed whine noise from the driver side, assumably power steering pump. Level is ok, fluid is clear cos of recent engine swop, no visible leak. Whining on acceleration on each gear, most hearable on first and second.
Today I took it for short run, this car my weekend toy, whine noise GONE after I turn the steering left/right many times, jerk the car to the left and right, probably scare the people behind me, WHAT IS THAT, air in the circuit or pump not fully dead yet ???
thank you for any idea
Read a lot of threads about this issue but did not see similar to mine.
I have 3.8cc 2001 formula, recently noticed whine noise from the driver side, assumably power steering pump. Level is ok, fluid is clear cos of recent engine swop, no visible leak. Whining on acceleration on each gear, most hearable on first and second.
Today I took it for short run, this car my weekend toy, whine noise GONE after I turn the steering left/right many times, jerk the car to the left and right, probably scare the people behind me, WHAT IS THAT, air in the circuit or pump not fully dead yet ???
thank you for any idea
12-31-2018, 09:16 AM
#2
How many miles do you have?
The power steering pump has a pressure relief valve in it. Because the belt is always turning, the pump is constantly building pressure in the system; even when it's not needed to turn the car. The relief valve bleeds off the extra pressure that's built up. My guess is that it's getting gummed up, sticking a bit in a weird place, and causing the whine. Using pressure to steer could cause that relief valve to close/actuate to a different position for you.
You can rebuild this part of the pump, but it's a hell of a mess - just like replacing the pump. If I were in your situation, I'd just do a pump rebuild and replace the pressure line and head off for another 100K miles. (This all assumes you are currently high in miles on the existing pump.)
The power steering pump has a pressure relief valve in it. Because the belt is always turning, the pump is constantly building pressure in the system; even when it's not needed to turn the car. The relief valve bleeds off the extra pressure that's built up. My guess is that it's getting gummed up, sticking a bit in a weird place, and causing the whine. Using pressure to steer could cause that relief valve to close/actuate to a different position for you.
You can rebuild this part of the pump, but it's a hell of a mess - just like replacing the pump. If I were in your situation, I'd just do a pump rebuild and replace the pressure line and head off for another 100K miles. (This all assumes you are currently high in miles on the existing pump.)