Wow what a day to be alive! Angels must be watching over me!
The title is not an exaggeration!
Yes vacuum brittle plastic tubes in later 5.0 cars can literally kill you as I have found out today!
So I leave my house to play some volleyball today. I live just a few minutes away from the unramp onto the highway which I was planning on using. Before the unramp all the sudden when I try to brake there's nothing there, pedal is all the way down to the floor, car just keeps going as I try to brake "Wtf?" it's going through my mind, luckily I was probably going 10 mph and as I used pretty much all the strength I had in my leg was able to pull over. I turn around and slowly make it back to the house using all the strength in order to stop. I can't even imagine what the scenario would look like if I was coming from the highway with high speed. Examined the car at home and what do I find under the hood.?. Small plastic tube completely separated broke at the t conection.
WTF Jaguar ? At least with the old rubber tubes they would slowly deteriorate not completely fail like this. I had a lot of cars in my life and never had a near complete failure of the braking system as I did in my Jaguar!
Moral of the story if you want to live, replace your vacuum tubes on regular intervals ))

 

Thanks for the alert!

 

wow. Glad you're ok. Thanks for the heads up!

 

Glad you're safe !
How many miles on your Jag ?

 

87k miles

 

Worth checking the vacuum pump for oil leaks as well as the gasket is prone to failure. Easy to replace.

 

Hello everyone:

I don't see why you can't make a split vacuum tube out of copper tubing and never have to worry about these braking or replacing again. Any thoughts on this?

JDog

 

I did this on a Bentley Continental, notorious for cracked plastic vaccum lines that require engine or steering rack out to replace, depending on your year.

In this scenario, couldn't you just pull the EPB? Rear brakes only but it's better than nothing.

 

vacuum lines for the brake booster?

 

on 4.2 or 5.0?

 

yea I would take copper, aluminum or rubber any day over crappy plastic..

 

Where is the vacuum pump located on the 2010 xkr? I suspect an oil leak. Thanks.

 

Lower front right corner of Crank case 3 and 5 litre.

 

Wow, praise God you were still going slow. Good thing that tube is easy to replace also. I'll be doing this soon. Thanks for the tip.

 

ffffffffffffffffffffffffffffff*ck thats scary

i wonder what would have happened if you pulled the emergency brake

 

Here is the part # C2D7775
I can't believe this little plastic tube is $130
So to replace all of these plastic vacuum tubes on the vehicle is probably going to be a thousand bucks. I wonder how much the aluminum or copper custom tube would cost..

 

There is no emergency brake. Only an electronic parking brake. Only used for.... well, parking.

Trying to engage it while moving will do nothing except make the instrument cluster chime.

In this situation you should immediately downshift to the lowest possible gear and pump the brakes repeatedly and quickly.

Glad you're ok Alex!

 

Where on the 5.0 is the vacuum check valve for the booster line? If the leak is between the booster and the valve, you're screwed. If the leak is between the engine and valve, you should still have vacuum in the booster.

 

I'd go silicone myself. Hard lines are great and do well with AN fittings. Question becomes, does the Jaguar easily adapt to AN fittings.

Glad you're OK and thanks for the heads up. Let us now how you get on with the repair Alex.

 

Thanks!
For now gorilla tape worked just fine as temporary fix at the broken y connection