The power steering pump has been replaced 4 times, the rack replaced once, the pps solenoid replaced once, lines replaced and or cleaned, reservoir and screen flushed and cleaned. The fluid has been flushed and replaced with ATF dex multiple times. I also added a secondary cooler in conjunction with the stock ps cooler which helped immensely on warm/hot days.
The issue is this: At cold startup, pump is quiet and power steering operates normally at idle and normal driving. Within 10-15 minutes of driving on a warm/hot day, pump starts to whine and steering requires a bit more effort.
On cool days (under 60F) the pump and steering is perfect regardless of driving length/type. No noise whatsoever.
And when I say it whines, it sounds like a pair of superchargers or worse under the hood. It's kinda embarrassing in Traffic and the exhaust can't get much louder to compensate.
Details on the car: 89 7mgte, 5 spd, 140k miles.
The issue is this: At cold startup, pump is quiet and power steering operates normally at idle and normal driving. Within 10-15 minutes of driving on a warm/hot day, pump starts to whine and steering requires a bit more effort.
On cool days (under 60F) the pump and steering is perfect regardless of driving length/type. No noise whatsoever.
And when I say it whines, it sounds like a pair of superchargers or worse under the hood. It's kinda embarrassing in Traffic and the exhaust can't get much louder to compensate.
Details on the car: 89 7mgte, 5 spd, 140k miles.
