replaced the starter, no noise and EPC on, that problem semi solved. Starter works. there was a ground issue that was grounding at the part i have attached and i want to know what it is, to replace as i fried it with a shitty ground.

 

wow you guys are super helpful thanks. or is it that no one has any idea what this sensor is that is in everyone of there cars? swell again thanks for the welcome to the community

 

Chill man, no one ever comments on my posts either, people have lives and have to work. Just keep digging and you come to conclusions on your own.

BTW that isn't a sensor I have the 02 A6 4.2 and what you pictured looks exactly like the secondary air pump. Do 1 of those hoses go to the air intake? And the other goes around behind the engine connected behind the PCV valve? (not to it obviously just behind it.

 

thank you for the reply, it is a aux coolant pump, and my problems are electrical and way beyond my scope. Thank you though

 

Nonsense it may seem overwhelming at first but you could re-do your entire engine bay electrical harness yourself in less than a few hours.

The longest part is getting it all off and cleaned up with all that nasty old wire tape.

I'd recommend doing this every 10 years on any car tbh.