Here's my problem. I'm having an issue with the power steering being
hard to steer at an idle once the truck is fully warmed up.
Truck is stock with 350 engine, I've replaced the OEM P/s pump
with a GM rebuilt pump...same problem. At times when the truck
is at operating temp, the steering is hard to turn at idle. You hear
some pump "whine" and its hard to turn. If you increase rpm a little
truck steers normal.
Truck is full of P/S fluid and has no issues that I'm aware of.
I then replaced the GM rebuild pump with another from the dealer
under their parts warranty. Same exact problem. I then replaced that
p/s pump with one from AGR. (I think that's the correct brand name).
Same problem but not as bad.
The only thing to look at now is the P/S gear...but the whole thing
just really aggravates me. It still sounds to me like its a pump
problem since the steering will function properly if you increase the
idle speed by a couple hundred RPM.
Anyone have experience with symptoms of a bad P/S gear, because that's
the only thing I've not replaced at this point.
Local GM shop has run out of ideas...they want to blame the tires (
285 75 / 16 BFG AT Radials ). But I don't see it that way because the
truck steered fine with the OEM pump and the same tires. I initially
replaced the pump because the fluid looking like a brown mess when I
got around to looking closely at it , and its bitten me in the @ss
More info... I think the truck idles around 500 RPM, don't know if
that the correct idle speed, my buddy at the GM dealer made
no mention of a low idle.
Any thoughts? Truck has new p/s hoses and so the only item left
is the p/s gear..