NOW – I am paraphrasing here. Joining up and summarising tit bits of info I was given and receipts emailed to me. Do I take all this info as gospel? NO he is a dealer so won't let the truth get in the way of a good story. But I can only consider what he has told me in good faith.
I will not know the full extent of what the mechanic disturbed or worked at for myself until the car gets here. Hopefully they did not mess with much as that will add work for me.
What I am wondering is what would cause a m119.970 to go stone dead overnight? I want to be ready and hit the car hard as soon as it gets here so to speak. My plan of attack is:
- Drain old petrol. Drop tank strainer and check condition. Fit new fuel filter. Re-fill with 4 – 6 gallon fresh super unleaded.
- Install all new fuses and clean the contacts – including the base module.
- Install new battery
- Clean battery terminals and check smaller + wire to base modules for tightness
- Hook up fuel pressure test gauge
- Fit a injector noid test lamp
- Crank it over and see for myself how the car is behaving.
- Check with a timing lamp for spark at the plug lead(s)
- Does this sound logical – any additional steps I should do?
I am wondering if the fault might be:
Dead EZL or other module– due to AA jump start
Failing diodes in LH module - non running fuel pump
Failed fuel pump relay or FPR
Bad crank sensor
Distributer cap, insulator, moisture or other ignition system failure
It has IR remote - possible problem with immobiliser or other electrical gremlin
I will use instinct and experience on my 500E m119 to listen for the ETA powering up, fuel pump running and check for spark etc etc. I have a wealth of good used and tested M119 spares, ETAs (w140 cable), modules, MAF etc on the shelf and I could borrow the dist caps and coils off my 500E just to test. I am tempted to buy a new spare crank sensor and have it on hand. A new 920 Amp 019 Battery is already on order for when the car arrives.
I took a gamble on this car going by the photos and the history that backs up the low miles. I will not know exactly what I've bought or exactly what the non start symptoms are until it arrives and I see for myself. If I am very fortunate it will be something simple like the fuel pump not running - or it could be an electrical gremlin that will take days or weeks to trace. I am fully aware of all of that so let's think positive here for the moment!