I've got an issue with 2nd and 3rd gear - searching reveals fairly common issues with cold gearbox oil creating notchy or difficult gear changes, however my issue is not temperature dependent.
It's a B6 1.9tdi 6 speed.
My issue is solely limited to 2nd and 3rd. Shifting UP, normally into these gears and the feel is of slight resistance with a distinct feel of some sort of mechanical impedence to getting into gear. It never fails to get into gear and there is never any grinding of the gears or noise from the gearbox. It feels more like the shifter mechanism isn't quite setup or lined up properly in some way.
Shifting DOWN into 3rd and 2nd, and there is no problem whatsoever.
I have notice that if I am slightly more careful with the stick movement, and take a second or two longer moving to 2nd or 3rd, then the issue is almost always NOT there. This entails (obviously) keeping the clutch in a fraction of second longer, but also - and it's difficult to describe this - feeling the gearstick into position rather than just doing it on autopilot. But it makes for a very disjointed driving experience with the car effectively out of gear for a couple of seconds at a time as I go UP the gears (but not down).
As I say, it is not temperature dependent as it does it all of the time. There is no noise or grinding of gears. The clutch pedal feels as it should do, with gradual bite rather than on/off control. There doesn't seem to be any movement of the stick whilst in gear, and little or no play (nothing alarming) in the stick itself. And it never does it moving back through the gears, only UP.
Whether I'm coming to the correct conclusion or not, I don't know. But the fact it only does it moving UP the gears, and therefore when the stick is moving from a different starting point that isn't replicated when coming down the gears; and that I can avoid the feeling of impedence by being a little more gentle and sensitive; suggests to me alignment of the mechanism or some worn component/bush somewhere.
Has anyone had a similar issue? I'm not familiar with the gearshift setup on the Audi A4, but have a lot of experience of troubleshooting and fixing the same problem on older rod shift gearboxes and cable controlled boxes (90's VWs) - always bush related. Are there any know points of likely failure on the mechanism for shifting? Obviously the elephant in the room (so to speak) is the synchromesh but I am guessing by a lack of grinding or screeching from the box when slotting it in gears, that the synchro is probably OK?
I can't find anything in the thorough service history and receipt pile to say it's had either a new clutch or a gearbox oil change in it's life either - 140,000miles - but there isn't anything certainly clutch related, to suggest the clutch has had it (no slips and the pedal position/movement feels spot on).