Mdiesel64

Hi all,

While diagnosing my 3.3T not starting after sitting for a few weeks, i noticed there was a random brown/white wire with plug that was seemingly hanging and not connected. I have never noticed this before as it was hidden behind the larger loom of wires and was wondering if anyone happens to know what this is to? Car has ran without a hiccup for over 3 years since the last engine refresh so assuming it can't be too important?


Bonus video of my turbo not starting if anyone has any insights lol

Thanks!

peterpullin

if i remember right, this should be the plug for bad fuel. not needed for a running engine,

fritz k.

You remember that correctly, it is a coding plug for operation with low octane fuel.

Because of no start: spray brake cleaner into the air filter housing while starting when she then starts or tries to start, the problem will be fuel related. In addition, you could pull out a spark plug connector, insert a spark plug and connect it to ground. When you turn the starter you should see a good spark.

Fritz