Ok guys, changed the switch, changed the FPR, no dice. ricoblanco our first suspicion...
 

was right. It's got to be fuel related.

The car will not start at first crank. It's as if the first crank primes it and the second crank starts it because there's fuel in the chamber.

It reminds me of my 72 TR6 with a manual choke.

I'm all ears. Help, please and thank you all for the input.

BTW the old switch was intact but I changed it anyway.

Here's my original post.
 

<ul><li><a href="https://forums.audiworld.com/a8/msgs/172536.phtml">https://forums.audiworld.com/a8/msgs/172536.phtml</a</li></ul>

Did you check the hall sensors?

Does it start and run?

What is a hall sensor?

It starts and runs, no codes, idles fine.

I read somewhere in here but it was refering on the 2.7T engine
 

that a bad Camshaft position sensor could give you a trouble like this. Some times the ECM can get a start point and sometimes it doesn't. Its not a big deal to check them if you have the VAG tool an LED test light a volt meter and the Bentley. If you need more information let me know. The sensors are identified as G-40 and G-163.

Wouldn't that cause it to start intermittently? My car always starts on the second crank.
 

No start first crank, start on second crank like a charm.

Well....
 

From what I understood is pure luck, it could go a week without any problem it could give trouble all day. I would check those two sensors and may be the speed sensor G28 as well.
----&gt; edit&gt;&gt;&gt; The post that I read was saying that the ECM is compensating as long as it can get one reference point. Now I don't know if this is true but if there is no or a wrong signal somethere then you have no fuel or spark, and once the ECM gets a reference point it starts.... its a good theory.... now you are the only one who can check :)
Good luck

Re: Well....
 

My original post was on 09/21, it's been doing the same thing since then. It is totally predictable. If I stop and start immediately it will start. If I stop and wait a couple of minutes no start on the first crank, start on second crank. After it starts no miss, accelerates fine and goes just like it should.