Hi thanks for the info, i have always disconnected both battery leads but after reading on some of the American forums about frying electronic components i started to worry, I really don't fancy playing around with the pcm connections and possibly causing more problems, they have never been pulled apart since the day it was built.
Just had a bad day trying to fit a replacement transfer case linkage (from Amazon) but it will not fit i suspect because its a diesel and the gearboxes must sit further forward, so the adjustable linkage is far too long, more wasted money, so will have to reconditioned the original setup and live with it.
Thanks for the reply.
Cheers Ian

I've welded on my TJ without disconnecting the battery or PCM. Done the same on vehicles at work too. I'm not sure it matters much, if at all, as long as you have a good clean ground close to the place being welded.

Anybody have any advice regarding welding on 1999 diesel xj cherokees, ive just had my mot done and been given an advisory for some welding that needs doing to the chassis rail just forward of the drivers side rear Spring mounting.
I know to disconnect both battery leads but have read some horror stories on US forums that you can fry the PCM unless thats disconnected as well, not sure how to disconnect them and dont really want to disturb them if i dont need to, anybody with any experiences or advice I would like to here your comments, i dont want to totally fry my Jeeps electronics.

List of the chosen for cheapfest 2025

It's a sad day when the minority spoil it for the many.

I believe something similar happened at Seven Sisters / Walter's, resulting in clubs not being allowed to book the site.

Just so people who aren't on FB are aware.

Hi guys, my old TJ 97 has been in my local garage for 3 months after what seemed like a radiator issue. The garage is now saying one of the core plugs in the cylinder head is shot (and can't be re-bored), so I need to replace the cylinder head. I'm not happy it's taken 3 months for them to diagnose the problem, so can anyone recommend a Jeep specialist in Essex or Hertfordshire  (preferably near Waltham Abbey/Harlow). I'm looking to sell my TJ - which has been so much fun for the last 10 years - and just need to figure out cost implications......do I repalce the cylinder head then sell, or just sell it as-is to a Jeep fan who is handy with a spanner?

Hi all

Have a little question, I was putting in a new head gasket, and I noticed that the fuel injector with the sensor wire was actually in cylinder number 2 and not cylinder number 1, it must've been like that for years, as I've had the jeep for 8 years and I've never moved it. My question is, does this cause any issues and should I move it?

A branded kit would probably cost hundreds so any cheap chinese copy that has the angled 4wd adapter would do the job. Get it good and tight then smack the end of the knuckle with a BFH. Try with just a normal ratchet to get it tight and if it won't break free move on to a strong arm. If they've been in for a long time the first movement will come with almighty bang. After that it will get easier.

Anything like this will do...
https://www.amazon.co.uk/BOOMSTART-Universal-Repair-Remover-Installer/dp/B096KFDTXS

Here's a Lisle branded one...
https://www.amazon.co.uk/Lisle-43620-Joint-Anchor-U-Joint/dp/B000HHV49M

 
Hi guys, my 1st post so if i get this wrong pls advise, i am looking for a reasonably priced, poss from Amazon ball joint press and remover tool kit , any suggestions for a proven kit which works OK. Thanks Phil.