PS Pump Still Whining after replacement??

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Oct 13, 2012 | 06:25 PM

BigBlackBoxChevy

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From: Philadelphia

PS Pump Still Whining after replacement??

Had a whine on the front of the motor. With the use of a screwdriver to listen to the power steering pump and the alternator, I narrowed it down to the power steering pump. I replaced it with a new AC Delco pump and the damn thing still whines.

Any Ideas? I bled the system according to GM's procedure. It operates fine.

Any help is greatly appreciated.

Oct 13, 2012 | 08:47 PM

Barnett92

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From: Mary Esther, FL

Some people on here say theirs do that because of a recall on the Power Steering pump lines. I hope this helps!

Oct 13, 2012 | 08:49 PM

Barnett92

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From: Mary Esther, FL

https://ls1tech.com/forums/ls4-perfo...ring-hose.html

Oct 14, 2012 | 09:27 AM

BigBlackBoxChevy

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Would the line be sucking air in then? I can't imagine a leak causing the ungodly whine this thing has.

I had the recall done 2 years ago, but i'll take a look at the line.

Oct 14, 2012 | 09:53 AM

Barnett92

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From: Mary Esther, FL

I would assume that air is getting into your lines from somewhere. That would be a good way to find out, if not put soapy water on your lines and have somebody else turn the wheel, maybe youll find your problem.

Oct 16, 2012 | 08:56 AM

JessmoMonteSS

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Quote:

Originally Posted by BigBlackBoxChevy

Had a whine on the front of the motor. With the use of a screwdriver to listen to the power steering pump and the alternator, I narrowed it down to the power steering pump. I replaced it with a new AC Delco pump and the damn thing still whines.

Any Ideas? I bled the system according to GM's procedure. It operates fine.

Any help is greatly appreciated.

It was definitely brand new, correct? Not a reman'd? I went through a similar situation. My pump was whining like crazy, I then installed 2 different reman'd pumps and they both whined out of the box even after bleeding the system perfectly. BTW our power steering lines don't take much to bleed them out. I then bought a brand new pump and voila! No more whine.

My guess is it's a bad pump OR like others have said, maybe it's a leak somewhere