On 05 Mar 2004 20:38:55 GMT, email@example.com (Matt Macchiarolo) wrote:
|I had a similar problem at about 18,000 miles...sounded like a rattling exhaust
|heatshield, but it happened at a certain RPM, when hot, and only under
|acceleration. First time in they replaced the torque converter...said it was
|the TC clutch chattering when it engaged. Noise started coming back in 3,000
|miles. Second time in they had a TSB on it...something about the valve body
|overpressuring the TC clutch, got a new valve body and control unit. Now, at
|about 33,000 miles it's starting to come back again and I will be taking it in
|before the warranty is out.
|>Around 85,000 miles, I started hearing a noise, like a grinding when
|>shifting from 2nd to 3rd, then later when it shifted in or out of O/D.
|>It wasn't bad, just noticeable. It didn't do it at all when cold. It was
|>worse when pulling a load, by load I mean 12,000 lbs of trailer and grading
|>I should have taken it then to be checked, but when the truck sits, I lose
|>money. Not a good excuse in hindsight.
|>Anyway, it got so bad I had no choice to take it in for fear of a failure,
|>and had to replace the transmission, and torque converter.
There is a fluid additive transmission shops use to stop TC chatter after a
rebuild. Any chance that might be helpful?
Rex in Fort Worth