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I'm constantly refining the how to and FAQ articles. Here are some recent videos added to the turbocharging article http://www.myturbodiesel.com/1000q/turbocharging.htm - they help show what a runaway is.
http://www.youtube.com/watch?v=WmkHTkmj2_U
http://www.youtube.com/watch?v=q4fxjKnuI4Y
This is why I do not suggest removing the anti-shudder valve/intake flap. It's not likely but if it does happen severe engine damage could result. If you have a manual you could put it in high gear and step on the brakes to stall the engine but if you have an auto you can't. And of course, the first and foremost thing is to drive safely and keep the car under control - no point in crashing the car or getting killed to save the engine!
This is a bad CV joint that I found - it was causing a vibration at idle when in gear. It's unusual for an axle to be the cause of such strong vibration when the car isn't moving but it does. http://www.myturbodiesel.com/1000q_how_to/b5/CVboot.htm The writeup is for a Passat (also works on Audi A4 and A6 of the same generation) but the general tips on CV boot repair are the same across really any car.
http://www.youtube.com/watch?v=UMPuvqxPKVI
http://www.youtube.com/watch?v=WmkHTkmj2_U
http://www.youtube.com/watch?v=q4fxjKnuI4Y
This is why I do not suggest removing the anti-shudder valve/intake flap. It's not likely but if it does happen severe engine damage could result. If you have a manual you could put it in high gear and step on the brakes to stall the engine but if you have an auto you can't. And of course, the first and foremost thing is to drive safely and keep the car under control - no point in crashing the car or getting killed to save the engine!
This is a bad CV joint that I found - it was causing a vibration at idle when in gear. It's unusual for an axle to be the cause of such strong vibration when the car isn't moving but it does. http://www.myturbodiesel.com/1000q_how_to/b5/CVboot.htm The writeup is for a Passat (also works on Audi A4 and A6 of the same generation) but the general tips on CV boot repair are the same across really any car.
http://www.youtube.com/watch?v=UMPuvqxPKVI