Power Steering Woes, please Help!
Hello new to the forum and have done several searches regarding my issue.
1997 K1500 with EVO power steering; replaced the pump last week due to light hissing during operation but worked fine (old pump), really wish I hadn't. Replaced the pump and bled system using lock to lock method, and new orings etc.
1st pump (A1Cardone), 2nd pump in a week and I am getting knocking noise from that pump also (AC DELCO), little or assist at idle and when knocking starts it continues to escalate with RPM.
It will work fine for 5mins until engine is warmed up, then total crap!
Pulled the serpentine off and no noise at rpm (definitely the PS pump). Apparently the EVO has been deleted from GM and others have deleted it with 1996 and older pressure valve and pressure line. I have these and will probably install tomorrow for the (4th time pulling the pump out this week).
Seems funny that the EVO valve went bad upon pump replacement, something else is going on and I can't figure it out!
Really tired of pulling it apart,
Please help, and thanks...