Been on holiday for the last week so obviously haven't had time to update this or do anything to the car! Prior to going on holiday I was going to post an update but the car annoyed me that much I had a bit of a strop...😂
So a couple of days after the last post I made, we connected all of the wires back up to the car and they were all 100% working when removed from the other car so we expected it to just be an easy straight swap. After connecting everything we tried to turn the car over by the key (won't start as fuel line not connected) and nothing happened. :weary:
Myself and Pete spent a whole evening trying to diagnose the fault and found it to be the exact same problem as we had with the other car! Relating to the starter not receiving any power. We played around testing all the wires for earths, lives or nothings and found that one wire connected to the starter relay was not earthed or live - it was dead. So we earthed it ourselves.
The bright orange wire in the picture is the wire we temporarily inserted to diagnose the issue. When we touched the body with this wire to earth out the missing connection, the car turned over by the key perfectly. We were very happy with finding this and so left it at that for the night. (In hindsight, I think this wire must be a triggered earth from the UCH, to do with a module in the immobiliser, as this is where the wire lead to after I traced it all the way through the bulkhead).
We then came back the next evening with the idea of trying to resolve this fault, knowing the solution already. But then Renault electrics being as they are, nothing worked!! The relay was now receiving no power at all and our temporary fix no longer worked. This was the day before we went on holiday and it's been pissing me off to say the least!:angry: So while we were away I dug into the forums and trawled through hundreds of threads and replies to find just some useful information.
I narrowed it down to an immobiliser fault, which made absolutely no sense due to the loom being out of the donor car! Anyway we got back yesterday and we went straight to the car to try and fix the issue. When we were turning the key to start, the immobiliser light was rapidly flashing. I found that this meant the key was not recognised or there was a problem with it. We fixed this by removing what I can only assume to be the immobiliser ring, from the indicator stalk controls... The immobiliser now flashes steadily when they key is out, and goes solid for a second or two when turned, then goes out as it should - still no turning over though.
Our first port of call was tidy all of the earths up. We scratched the fresh paint off the earth points that we'd painted over (cries internally) and ensured they were all extremely tight. Tried the key, VOILA. The issue was solved and makes no sense at all apart from the dodgy earths. But anyway... long story short, I hate French electrics - it's now fixed.
Time for the good stuff!
EVOL Engineering Race Dogbone mount delivered while we were away. The dog ironically stole it off me when I opened it:tearsofjoy:😂 Clever thing.
So when we fixed the wiring yesterday, we begun tidying it all back up. Alex put all the engine fusebox back together and myself, Pete's friend and her brother Joe made a new bracket for the ECU to sit in. We ground off the horrible monstrosity of a bracket that comes standard on the ECU and riveted an aluminium sheet to the side of the engine bay. Then we drilled a couple of holes into it and bolted the ECU onto it - much tidier and frees up tonnes of room in the engine bay. God knows why Renault didn't just put it there..
oo:
We designed it so that the plug faced upwards, so if we ever needed access to it in the future it would be easy :smirk:
So now we've got no more hurdles, progress should pick up fast! Time to tidy the wires up where we want them in the long run and chop unused ones off. Unfortunately I'm at work all day today and tomorrow so can't do anything this weekend :triumph:. Then we've decided to get an internal alloy fuel tank and swirl pot, and run internal braided fuel lines. Need to buy a race battery and the leads we need for it, so we can keep testing if we break anything when cutting wires lol. :smiley: