Intermittent starting problem

[Markuza]

Hi.

Intermittently my Q7 tdi 3.0 does not start. Engine cranks for about 2 seconds and stops (no firing at all). It's not the starter motor as cranking speed is very good. There are no warning lights, and after struggling for few minutes, it does start eventually. 

Any ideas will be appreciated. 

[DON HOLMES]

On 9/13/2019 at 3:31 AM, Markuza said:

Hi.

Intermittently my Q7 tdi 3.0 does not start. Engine cranks for about 2 seconds and stops (no firing at all). It's not the starter motor as cranking speed is very good. There are no warning lights, and after struggling for few minutes, it does start eventually. 

Any ideas will be appreciated. 

Hi did you get a result with this issue as I am experiencing the same?

 

 

[Amy82r71]

I had a simular issue and found replacing the ecu fixed the fault. But in now having new issues with the fuel pressure codes appearing. Hope this helps