Dirk Posted November 24, 2005 Share Posted November 24, 2005 I’ve got a T56 (Cobra) over a year ago, the tranny runs still fine, but it makes lot of noise. It made this noise right from the beginning, it got better after a the break in period, but it’s still there and annoying. It’s a rattling sound at high rpm’s and when accelerating in high gear between 1k – 2k rpm. The noise is almost gone when the tranny is cold and gets worse when the tranny heats up. I plan on changing the throw out bearing to see if it helps, but I doubt it. I’m using synchromesh oil, should I try switching to different oil or is there an additive which would help? I’ve heard that the Ford friction modifier helps reducing the noise, but I’m not sure if it’s save to try. What do you guys think, what can I do? Quote Link to comment Share on other sites More sharing options...
dvarapala Posted November 24, 2005 Share Posted November 24, 2005 I’ve got a T56 (Cobra) over a year ago, the tranny runs still fine, but it makes lot of noise. It made this noise right from the beginning, it got better after a the break in period, but it’s still there and annoying.It’s a rattling sound at high rpm’s and when accelerating in high gear between 1k – 2k rpm. The noise is almost gone when the tranny is cold and gets worse when the tranny heats up. I plan on changing the throw out bearing to see if it helps, but I doubt it. I’m using synchromesh oil, should I try switching to different oil or is there an additive which would help? I’ve heard that the Ford friction modifier helps reducing the noise, but I’m not sure if it’s save to try. What do you guys think, what can I do? My '03 Cobra didn't make any unusual tranny noises (just the "normal" clunks) and neither does the T56 in my Corvette (which clunks just like the ones in the Cobra . Forget the friction modifier, take your car to your dealer for service! Quote Link to comment Share on other sites More sharing options...
Dirk Posted November 25, 2005 Author Share Posted November 25, 2005 The problem is. I do live in Germany and there is no dealer and no service for the Mustang. I've got The T56 from D&D for my '99 Cobra. Quote Link to comment Share on other sites More sharing options...
Slithr Posted December 5, 2005 Share Posted December 5, 2005 Transmission making noise, or shifter making noise? Quote Link to comment Share on other sites More sharing options...
Dirk Posted December 6, 2005 Author Share Posted December 6, 2005 It's coming from the transmission. This is the explanation for the rattle I got from a guy on another forum (LS1): "All the 6-speed cars have this rattle. It is not a defective part or a malfunction. The tolerances on the main shaft are kept loose in order to handle the enormous torque loads generated by the engine. When you push the clutch pedal in, the input shaft stops turning so the noise goes away." Quote Link to comment Share on other sites More sharing options...
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