My girlfriends L03(junk) powered '95 chevy 1500.

Power steering pump started screaming a few weeks ago. I changed it(what is up with L03 bracketry?!) and the new on did the same thing from start up on. I ran it for two weeks, then changed it AGAIN tonight. It still cries like the little baby that it is. Why is this thing making so much noise??? Grrrrr!!

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'83 Trans Am: 400 CID oil burning junkyard long block, 224/234 crane cam, Summit aluminum roller rockers, hand ported intake, home bored 2.09" (53mm) throttle bodies, MSD 454 injectors(75 lb/hr), Holley 255LPH fuel pump, custum modded FPR, Edelbrock TES headers, SLP 3" stainless steel cat back, stock ECM & chip. Borg/Warner T-5 World Class, 12" Corvette rotors and clipers, GTA 16" wheels, South Side Machine subframe connectors, 1LE sway bars, 3.45 ring and pinion, Alpine sound.
Best E.T. 13.532
Best MPH 102.24

 

did you bleed the pump?

 

Yes. Thoroughly.

 

hmm

I have no idea then

 

Anyone else? I bled it by jacking up the front of the truck before I started it, then with a full reservoir, I started it, then turned the steering wheel back and forth all the way from one side to the other about 5 or 6 full cycles. Doing this this did not quiet it at all, and only used 1/4 cup of fluid at most.

This sucks. It makes WAY more noise than any other part of the motor, even the "American Thunder" Flowmaster exhuast. It's driving me f*%#ing nuts, and the worst part is that I can't even isolate each accessory b/c it is serpentine (obviously). Any idea's anyone? Oh, one other thing; the groaning doesn't get any louder when you turn the wheel and put a load on the pump.

What position is the belt tensioner supposed to be in? I noticed that there are two arrows on the bracket that look like they are supposed to line up with two pairs of marks. Is this where the tensioner is supposed to be when the belt is installed? It seems like the belt is too tight, but I don't see why this would cause it to START making noise about a month ago -the belt didn't suddenly get tighter at that time! BTW the belt is about 6 months and 5000 mi old.

 

The tensioner position marks are supposedly to show belt stretch. I forget how to read them.

Is the fluid aerated? Maybe it's the bearing in the belt tensioner or the altenator. Seems unlikely that 3 different P/S pumps would have the same whine.

 

I totally agree, Brent, that it is unlikely that 3 pumps would be bad. The fluid is not aerated. With the belt removed, I tried to spin, shake, and wiggle all the other accesories and they all felt smooth and tight. I'm at a loss as to what to do. If it was my car, I would just remove all but one belt at a time to isolate each accesory.