Larry, Jack up the front end of the car and check the bearings on the wheels. Grab the wheel at 3 and 9 o'clock move the wheels back and forth, push on front and pull on back and then vice versa and see if they feel loose. A power steering pump usually sounds like a higher pitched whining then a low rumble roar. The noise would be there all the time and get worse if the wheel is turned either left or right. Loose bearings would tend to go away if the wheel it turned one way or the other.
Manfred Date: Tue, 6 May 2008 08:51:03 -0400 From: "LarryT" <[EMAIL PROTECTED]> My 78 240D has developed a roar once road speed is above 15mph or so - but when the steering wheel is turned to the left the roar goes away -- does that seem like the roar is coming from the PS pump? I've been trying to diagnose this noise for some time - a year or so. The PS acts normally - no additional effort is needed to steer (that I can detect) - there's no other noises coming from the pump like groaning when turning and no other symptoms are present. I did notice one other thing - when I checked the fluid level immediately after driving, the fluid looked undisturbed - typically I believe the fluid will look like it's been moving - frothy with bubbles on the surface of the fluid I believe - but in this case, the fluid looke like a quiet pool. I have a used PS Pump on the way so I;ll switch them out regardless -- just curious if this sounds like a PS pump problem - TIA - Larry T (66 MGB, 74 911, 91 300D) _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
