OK found out it was a leak and this is where the leak is..

what is this piece? it doesnt seem there is a way to make it stay connected

 

16684/P0300/000768
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Contents [hide]
1 16684/P0300/000768 - Random/Multiple Cylinder Misfire Detected
1.1 Possible Causes
1.2 Possible Solutions
1.3 Special Notes

16684/P0300/000768 - Random/Multiple Cylinder Misfire Detected
Possible Causes
Air Intake System leaking
Fuel Supply faulty
Injector(s) faulty
Ignition Cable(s) and/or Spark Plug(s) faulty
Ignition Coil(s) faulty
Exhaust Gas Recirculation (EGR) Valve (N18) stuck/open
Camshaft Position Sensor (G40) faulty
Possible Solutions
Check Misfire Recognition
Check Air Intake System
Check Fuel Supply
Check Injector(s) and Injector Sealing
Check Ignition Cable(s) and Spark Plug(s)
Check Ignition Coil(s)
Check Exhaust Gas Recirculation (EGR) Valve (N18)
Check Camshaft Position Sensor (G40)
Special Notes
This DTC indicates that one or multiple cylinders are misfiring, but the ECU fails to identify the cylinder.

 

You need to get your hands on a better scan tool, i doubt your are misfiring on all four cylinders because your engine probably wouldn't run. If its just random misfires on all four cylindes it could be caused by a huge vacuum leak, which you could probably find easilly just by popping the hood with it running. You should hear air being sucked into the engine somewhere.
If you a bad coil pack, you could swap the pack to a different cylinder and see if the misfire moved. Since you didn't post the fault codes i couldn't tell you that.

 

yeah i just went out and checked it was a leak, im uploading a picture now becuase it looks like a piece needs to be replaced where the leak is but im not sure exactly what it is.

 

updated with a pic

 

http://www.ecstuning.com/Audi-B5_A4-...oses/ES261411/

could this be what i'm looking for, this is the closest looking thing i could find on ecs

 

https://www.audiforums.com/forum/sho...d.php?t=136978

Check out this thread...

 

thanks, guess piece is the suction pump then

 

I don't remember the details now, just that the poor guy almost crashed because his brakes failed. Didn't want the same thing to happen to you...

 

yeah mine were doing the same thing on the way to autozone. had to use the ebrake to stop and keep the rpms up so it didnt stall the whole way there. atleast it was an easy fix, now just waiting on ecs to get me my new piece.