R36 Engine start problem

[seanmau5]

Ohhhh is that under the engine address in my scan? Here is a screenshot of it.


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[seanmau5]

And my issue is hot/cold start issues if sitting in the sun and it’s hot outside.. Sort of 28-29 degrees ambient temperature or above


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[kamold]

That's the current ecu software version for that engine unfortunately...no update available.
Was worth checking.

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[kamold]

What does the throttle body look like? Does it open up to 100%?
What does the intake look like in terms of carbon deposits?

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[seanmau5]

I assume the 3490 is the software version? My throttle body was cleaned the first time it was taken in for the issue but didn’t help. I was also suspecting carbon build up in the intake but I haven’t removed and inspected that yet. Would ambient heat really have an affect on the affect of carbon build up?


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[kamold]

I assume the 3490 is the software version? My throttle body was cleaned the first time it was taken in for the issue but didn’t help. I was also suspecting carbon build up in the intake but I haven’t removed and inspected that yet. Would ambient heat really have an affect on the affect of carbon build up?


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Yes that's the software version.
As for carbon buildup it's just about the only other thing I can think of sorry

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[seanmau5]

Surely the OP is getting email notifications about all this action that his thread is getting.......


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[seanmau5]

Oh thanks for the help too mate. I’ll keep searching.


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[kamold]

Are you down on power at all once it does start?
Possible vacuum leak?

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[kamold]

For what it's worth I have the same engine with 3488 ECU software and (touch wood) have never had any starting issues in any sort of ambient temperature.