Just after a bit of advice really. I've got a 2002 147 Selespeed which is occasionally missing 3rd & 4th gears. 95% of the time the selespeed works fine, but the rest of the time it hesitates after 2nd gear, sometimes skips 3rd and goes into 4th, or just misses 3rd & 4th and goes straight for 5th gear. Coming down the gearbox is usually fine, but it will sometimes miss gears too.
With the engine off its a similar thing, 95% of the time all gears are available, the rest of the time it is exactly the same as above - although last night I could only get 1st & 2nd then straight into neutral, but this morning it was fine again.
So far I have:
1. Checked for swarf in the end plate - nothing there
2. Had the push rod adjusted
3. Had a calibration done
Yesterday my car was serviced and everything was checked with examiner and came back ok. Pressures were all good, battery was good, pump works fine and there were no faults logged and no selespeed warnings.
I'm going to have a wiggle and check of the connectors to the sensors on the selespeed unit & gearbox speed sensor today to see if any are loose and do a resistance check of the sensors (should be 1.2K ohm I think I read?). Does this fault sound like a sensor is failing?
If I don't find anything obvious, where is the best place to look next?