06-13-2014, 01:57 PM
Join Date: Nov 2007
Location: Saint Paul, MN
Total Cats: 17
Howling bearing-like noise while driving
I recently replaced all 4 wheel bearings to Timken rears and Precision fronts. I have been having some nasty howling that almost completely covers the exhaust note while cruising with the top up between 55 and 65 (faster and the noise is drowned out by wind). If I put my head up by the vent hole by the driver's door while driving, it gets noticeably louder to the point where I'm almost certain it's the driver's front.
-Steering left/right does not affect the pitch
-Replaced both fronts, even tried an old hub to test the driver's side and no change.
-Both rears were pressed in with old races
-Pitch gets lower as I come to a stop, gradually getting lower through the 40 through 15mph range until it's inaudible.
-Clutch in, no change
-Brakes applied while hitting the gas to maintain speed - no change. Note: If I spin my LF wheel the rotor lightly skips on the pads indicating a slight warp. Could the rotors cause this?
-E-Brake applied to no avail.
-Recently got a new alignment. No change to noise whatsoever.
-Replaced tie-rod ends with R-Package ends
-I occasionally get a light 'click' when applying the brakes just before stopping. Sounds like the pads shifting as I lighten brake peddle pressure (unrelated?)
-Rack used to "click" when steering left/right so I tightened the adjuster on the int. shaft.
Any ideas guys? I'm running out of ideas here.. I'm getting an NB front end setup to bolt in in a few weeks that will replace the spindles in case folks think it's those. Also, I'm running original Star Specs, 205/50/15 on 15x8.