Q7 intermittent starting issues

[Ashley allen]

Hi I’m new to this forum so hello everyone 

im hoping u can help with an  issue with my 07 q7 which has a starting issue, every now and then the car wont start fires for two seconds then nothing it might take 15 minutes of rest or up to a couple of hours and then will fire up No problem the car drives like a dream the rest of the time not sluggish or running lumpy & idle is smooth .Their is no rhythm or rhyme,as to when it will do it might be a few days in a row or a week or even a few times in a day .we have had it in our garage twice now and in true form the car didn’t have the issue whilst they had it. I’ve checked the starter motor Battery and all is good but they say they need the car to fault whilst with them to find the fault they have had it for well over a week 

any advice will be welcome

kind regards ash 

 

[Bigdave1230]

Crankshaft sensor. I’ve had that fault before. Won’t have any fault codes stored either. 

[Ashley allen]

Thanks big Dave 

u r a legend 

[Ashley allen]

It’s been 3 weeks since I did the cam shaft sensor and all is well with the car uwere spot on Dave thank u 

[Bigdave1230]

👍🏻