[V8] cold no-start

[urq]

15 minutes???  What is the ambient temp?  Is it getting to be well below 
freezing?

I'm not thinking coolant temp sensor myself, but I suppose it could be.  If 
you have a way to read out the ECU data blocks you can read the temp value 
the ECU sees.

I'm wondering if you're having a problem with fuel pressure.  Have you tried 
warming up the battery and topping up the charge before attempting to start? 
I haven't seen the V8 to be as susceptible to low battery voltage as other 
Audi models, but it could be.  Can you tell if you're getting spark?

Steve B
San Jose, CA (USA)

----- Original Message ----- 

> the v8 is not starting well when it has sit for very long.
> synptoms started about 2 days ago with start time of 3 minutes..
> today it took 15 minutes..
> note the temp dropped alot, even got snow today.
> I am suspecting the coolant temp sensor. this sound logical?