Clicking noise on overdrive Unit

[james-t]

I have recently fitted a reconditioned O/D unit and gearbox from a 420G to my E type 2 2+2. When the O/D is engaged and foot taken off accelerator and again applied i hear a metallic clicking. Foot off accelerator it clicks - foot back on its clicks ? I have by- passed the fourth gear switch on the gear box therefore eliminating a dodgy switch. Once the O/D is disengaged there is no more clicking when carrying out the same acceleration and de-acceleration. Any ideas as to what might be causing the clicking.
Thanks James.

[mgcjag]

Hi Jim...have a look at this post re oil....dosnt give an answer but something to look into that might help viewtopic.php?f=3&t=5749&p=40536&hilit= ... oil#p40536

[mgcjag]

Hi All...been out with Jim today trying to solve this clonk type noise....when you engage o/d you hear the solonoid engage.....when you come off tne throttel or back on you get a clonk....sounds like a loose u/j on the prop but it only happens when overdrive is engaged....thought it might be electrical and the solonoid disengageing but it stays in overdrive.....come on guys...need some ideas.....Thanks..Steve..

[christopher storey]

I should have a word with Overdrive Repair Services at Sheffield or thereabouts. Very helpful people, and probably now the leaders in Laycock servicing 0114 248 2632