2014 Rapide S Rough Cold Start

[intouch1]

I am experiencing a slight issue with my new Rapide S. Since new (by now car has run 600 km) I would experience a rough idle for about 10 seconds at cold starts. Engine idles rough and seems to stutter and wont acccept accelerator Input. After 8-10 seconds it settles and all is fine.
Later warm starts do not exhibit any issues and car starts normal, only to do the same and the next cold start a day later after it had settled over night.


I took the car to the dealer who could not pull any codes and updated to the latest ECU Software to no avail. The issue remains.


Other than that, the car runs jut perfect an exhibits no Anomaly at all.


Any ideas ?

[josh bear]

Hi

I have a 14 Reg Rapide S and when I press in the key the initial engine wind up is less perky than on warm days but I haven't ever seen (so far) the issue you are describing. I post to let you know it isn't normal.

Best regards.

Josh

[Zod]

My V12V is like that sometimes and that's with a manual box and the previous version of the engine.

[intouch1]

there was actually a Service Action notice from Aston Martin regarding this issue. A Software update was made available at the beginning of 2014.

My car is a late model 2014 and still, even with a dealer update a month ago, I am still experiencing the issue.

As soon as the revs settle after 8-10 seconds the car will behave perfectly all day. only when stopped again overnight does it reoccur on every cold start.

[michael gould]

sounds like the software controlling the mixture settings on start up .....with my limited knowledge cars run a little rich until warm.

[Johnny42]

Temperature sensor? (Zero experience of this engine, just my 2 cents worth.)

[intouch1]

my dealer said that they will reflash the ecu, taking the Settings of the warm start and Flash it for the cold start...