V6 Xantia......... the beginning of another adventure

[CitroJim]

We'll see this weekend possibly .

Mark, all the best, we're all looking forward to welcoming you to the fold

[Trainman]

We'll see this weekend possibly .

Mark, all the best, we're all looking forward to welcoming you to the fold

Having said all that, I also know a good undertaker should the need arise

[bxzx16v]

Yes I may need one at this rate Jim. Just seen a few pics and it looks very nice.I've not been this excited since I got the Zx. It looks like I'll be going over for a viewing tomorrow.

Mark

[Trainman]

Well, something else last night, used the cruise control on the way home, however, I thought something was wrong....... although cruise was engaging, it was dropping the designated speed slowly but shortly, dropped 15mph in the space of about 7 mins. I tried putting my foot under the brake pedal first to pull the pedal up, it still did it.

I tried it again today and it's still the same, so looks like another job for monday, unless I get chance to have a look tomorrow

[KP]

My money's on a vacuum leak Steve.

[Trainman]

My money's on a vacuum leak Steve.

Yeah, mine too, it's just that I'm going to the Heysham Classic Car and Bike show tomorrow, may have to see if I can have a look...... subject to weather...

[KP]

In your position I would buy a load of silicone hose and replace the lot. Job done if not a pain to do but doing it all once in silicone will save youang years if touching it again

[CitroJim]

Gotta be careful with vacuum leaks. They make a terrible mess on the garage floor...

That'll be what it is though. Fill the vacuum reservoir with fluorescent vacuum and then you'll be able to see the source of the leak under UV light.

[Trainman]

If I get chance tomorrow, I'll have a look and see if it's something simple, if not then we can have a shufftie on Monday, if we have the time.....

[CitroJim]

if not then we can have a shufftie on Monday, if we have the time.....

I'm sure we will Steve

Another job for Citro "Girly Hands" Jim

[Trainman]

if not then we can have a shufftie on Monday, if we have the time.....

I'm sure we will Steve

Another job for Citro "Girly Hands" Jim

Maybe we should start calling you Jemma.....

[Mandrake]

I wouldn't be so sure that it's a vacuum leak, in theory the feedback loop should compensate for a small leak by operating the vacuum pump more often to maintain equilibrium - unless the leak was really bad, but I doubt that it could maintain a steady speed with a bad leak.

A gradual and steady loss of regulated speed over many minutes will be something else IMHO like a faulty control stalk or bad connection to the stalk that may be "pulsing" the down input to the ECU momentarily causing the preset speed to gradually change.

One way to accurately test for vacuum leaks would be to manually energise the solenoids and pump from the ECU connector as described on this page in my new blog:

http://www.frenchcarforum.co.uk/forum/v ... 8&start=90" onclick="window.open(this.href);return false;

I did exactly that looking for leaks on mine and found none. Of course on a S1 that means unbolting the drivers seat and lifting the carpet...

But on the plus side it means the vacuum pump, solenoids and piping can all be verified 100% while the car is stationary, whereas manual inspection of the hose for leaks is more of a "try this, see if it helps" scenario where you don't really know if you've fixed it or not until later...

[KP]

Afraid you've been beaten to it Steve, it's Sir Jam to us lower citro lovers

[Trainman]

Jimimah ...

Bugger........ just thought of that......

[xantia_v6]

First thing to check is the vacuum hose connection onto the valve, it is 3mm hose on a 4mm spigot and tends to split, causing a gradually increasing leak and the symptoms described. A good fix is to find a few cm of more flexible hose and splice it in with a 3mm joiner.