Hi all,

I’ve got a bit of a strange issue with my Crossfire and I’m trying to figure out what it could be before I start tearing into things.

The car previously had the known RCM issue with dry solder joints, causing a no crank / no start (fan on etc). That was sorted last year and it’s been running perfectly since, so I thought that was behind me.

On Friday, I was stopped at a red light and the engine suddenly just went quiet and died, no warning at all. When I tried to restart it, there was no crank, but silence from the fan. Hazards still worked so it didn’t seem like a battery issue.

I opened the bonnet and moved the RCM around slightly in its housing (didn’t unplug anything), and after about 15 minutes of trying it eventually started again. I got a brief BAS/ESP light, then it drove fine like nothing happened.

Then today it happened again, but worse. I was coming out of an underground car park, mid turn, and the engine just cut out. Same situation, no crank at all. The fan sometimes came on, no start, but then I moved something and no fan, but still no start. I tried everything for nearly an hour with no luck to get the engine on.

Recovery was already on the way, so before they arrived I tried it one more time and it randomly started. I managed to move the car to a safe spot, and then drove it home with the recovery guy following behind me in case it died again in the middle of the road.

While we were looking at it with the engine running, I showed him RCM and at one point he touched a plug around the left side and the engine suddenly spluttered for a moment, then carried on normally.

There are no fault codes at all, and once the car is running it seems completely fine. Until something like this happens.

So now I’m trying to figure out what this actually points to. Could this be:
- the RCM solder issue coming back
- a connector / pin issue around the RCM
- something like the SKREEM
- a sensor
- or even something mechanical like a valve causing it to cut out

The fact it reacts when something is touched around that area makes me think electrical, but the engine cutting out while already running threw me off a bit as it’s never happened before.

Has anyone had anything similar or can point me in the right direction?

Thanks in advance.