I have a '91 F-350 that makes a terrible C-r-r-runching noise whenever I slowly roll over speed bumps, turn on uneven surfaces, or drive on bumpy ground.

The sound appears to come from the dash area, driver's side. Somewhere in the corner near the windshield. Dash seems to be tight... and I'm not sure how to get behind it anyway. The noise might be coming from outside the truck for all I know.

Is this a common problem on the '88 to '91 trucks? What is the problem, and how can I fix it?

Thanks,
Mike

 

Just trying to keep this near the top, just in case others have had this problem and might know the cause.

Thanks,
Mike

 

has the truck been in an acccident?... check to see if the numbers match..... go up under the dash and loosen the bolts to see if it is kinked the retighten them