Moz1000
Member
- Messages
- 821
Hi Folks
My 4200 CC has a thump when chnaging gear. When the engine and gearbox are cold, the gear change is smooth with no thump. When the engine is up to temperature the same applies, however when the gearbox has warmed up, I get the thump. It happens on up- and down-shifts, and is noticeable when changing to 2nd and 3rd when driving around town. It probably does it when changing to 4th, 5th and 6th, but is not noticeable, perhaps because there's less load.
It feels like when you don't fully depress the clutch in a manual car before shifting gear - you get that thump.
Emblem have had a look at the gearbox mount and say that's ok, and can't find anying obvious. Maybe 'they all do that sir!'. Clutch is the two pronged version with 50% remaining. I'm running the original transmission software. I have tries 5.2mm and 4.7mm for the PIS point (currently 4.7).
Can anyone shed any light on the cause?
Many thanks
Dave
My 4200 CC has a thump when chnaging gear. When the engine and gearbox are cold, the gear change is smooth with no thump. When the engine is up to temperature the same applies, however when the gearbox has warmed up, I get the thump. It happens on up- and down-shifts, and is noticeable when changing to 2nd and 3rd when driving around town. It probably does it when changing to 4th, 5th and 6th, but is not noticeable, perhaps because there's less load.
It feels like when you don't fully depress the clutch in a manual car before shifting gear - you get that thump.
Emblem have had a look at the gearbox mount and say that's ok, and can't find anying obvious. Maybe 'they all do that sir!'. Clutch is the two pronged version with 50% remaining. I'm running the original transmission software. I have tries 5.2mm and 4.7mm for the PIS point (currently 4.7).
Can anyone shed any light on the cause?
Many thanks
Dave