About 2 weeks after I did my starter I remember having the exact same symptoms with the click click, turned out I hadn't quite tightened one of the battery terminals fully.
Never had a problem since.
One good thing about the Celsior is there is no EGR system to worry about and having to remove with that fiddly pipe at the rear of the engine.
Probably a good chance it is a weak battery problem.
Just had the same symptoms (click, click) on my wife's car, replaced the battery and the engine starts fine now with no click, click.
Let's hope that's what it is, so you do not have to replace the starter motor.
Hi
john in the 8 years i have driven the LS range i have read, contributed and learnt alot about these 400s/430s and i have never come across any type of major fault or gearbox failure in the 400s - the world bulletproof is really true here - stop worrying
the problem as you say relates to the 430 and can easily be avoided by either changing the radiator or fitting an additional oil coller as done by atleast 2 members of this forum
hope this helps
Personally I don't think any Ls400 is worth £5k at the moment let alone 6 or 7.
It hasn't reached a classic status and isn't very popular. To most people it's just a big engined, gas guzzling dull saloon.
I agree with Mike. If I was thinking about buying it, I'd worry about how the rest of it has been looked after. You can tell a lot about an owner, and how he/she treats his/her cars, by checking out the interior.
Did you see how PC I was there? :)