Hello all - hope all is well. Just to bring everything together and keep the thread up to date, here are a few overarching updates...
Instrument cluster / interior lights
This is now solved. After playing with the dimmer switch nothing happened, then on the off chance of waiting for someone in the car I gave it another twist and turn and voila! It's fixed. Seems to be working fine since then.
I now have MB brand new potentiometer, fuse and all bulbs for the cluster surplus to requirements (couldn't return them as they are special order parts).
Ignition leads
The new ignition leads have fixed my starting issue! Well chuffed - no more cranking hard to start. I didn't fit the leads to the coil - does anyone know the easiest way of getting access? Anyways, I'd highly recommend the the lead change for anyone as preventative maintenance. I bought the Beru cables and they're specifically for the W124 500E.
Distributor caps and rotor arms
These have been replaced now with Beru items. The originals did look battered and potentially the original ones. Car feels better post-installation and I'm sure these will last a while.
Rough idle
I also managed to take the car to Terry at Wayne Gates for the rough idle issue. He had a quick look but couldn't find the issue at the time. Car is clean on emissions and a re-MOT showed a pass. I have to highly recommend Terry to anyone, he is taking the car for a week or so and will be diagnosing the issue in more detail. He has strong experience of the M119 which is becoming a rarer thing (especially in the UK) and he is confident he can find the problem with it (I'm sure him and his team will).
Thanks Terry!
I will be replacing the fuel pressure regulator today if I have time however after Terry kindly checked the fuel rail it was showing a pressure of 4 (bars?) at idle so we are not sure there is an issue here at all. It then slowly drops off when switched off but comes straight on once the ignition is on. It's only a cheap part and recommended for replacement on the M119 as preventative maintenance anyway.
Underside
I am also glad to say the underside of my car is in excellent condition Being from Japan I was expecting it to be clean and I did have a quick look before I bought it but not a detailed look from a ramp. The underside is rust free. No signs of any accident damage and many components are new, still retaining the MB stickers which shows me that whoever had this car is Osaka really took care of it. The front shocks are red in colour at the front - any ideas of what they are? Couldn't see a brand but need to look in more detail. Springs all around look OEM.
UK climate is unfortunately not as pleasant to older cars so I hope to have the underside professionally cleaned and re-waxoyled before the summer to protect it.
I'm also glad to say all the Lorinser parts are stamped and look original including the wheels
At first look they only said Ronal but sure enough on the inside it says Made by Lorinser by Ronal. They are 8Jx18.
Smaller bits...
Fuel filter, headlight wipers and air intake tubes replaced with original OEM parts. I have also replaced the rear light lenses with facelift E500 items (the clear lenses make the car look more modern).
The headlight wiper washer doesn't work - any ideas? I can hear the motors but no water coming through.
Photos
Here are some photos which I have been accumulating over the last few days - to start with, one of me at a petrol station, practically where the 500E spends most of it's time
Service of the filter, caps, arms etc along with the engine bay when I started
Parked at Wayne Gates Mercedes waiting to be assessed
On the ramp - underside of my 500E
Photos from last night before I replaced the ignition cables - a filthy M119 in all it's beauty...
All back together
Hope you've enjoyed the read. I have lots of "to do" jobs but before I start on all that I will be working to cure the rough idle issue. If anyone has any further ideas please let me know
Cheers
Bill