V6 aux belt change

Post by **DHallworth** » 28 May 2011, 21:11

Lexi,

Not sure how the ECU box on the Xantia comes out.

I've just done the timing belt on my V6 XM. Wasn't to bad a job but it wasn't a 5 minute job either.

If you wish, PM me your email address and I'll forward you the Citroen workshop manual that CitroJim sent me with regards to doing the belt.

One thing that everyone advises is to upgrade to the later C5 style tensioner as it's a million and one times easier to set the tension up.

Regards

David.

Post by **CitroJim** » 28 May 2011, 21:25

DHallworth wrote: Not sure how the ECU box on the Xantia comes out.

Disconnect battery, remove lid, unplug ECUs noting that the two plugs on the Hydractive ECU are secured by springy wire clips around their edges that are near-invisible. Start one side of the spring clip on one of the plug narrow side and carefully ease it out so that one side of it is right out of the way. The plug will then pull off. The engine ECU plug has a silver 'handle' on it that lifts up and eases the plug out at the same time. Lift the loom and the two double injection relays up and clear so that the ECUs can be lifted out.

In the bottom of the box are two 10mm studs. Remove them. Push the box back and lift it up at the back by the aircon receiver/drier, carefully disconnect the cooling duct hose at the front of the box. The hose will just pull off. Tease the box out.

Toby_HDi · Post by **Toby_HDi** » 28 May 2011, 21:25

DHallworth wrote:Lexi,

Not sure how the ECU box on the Xantia comes out.

I've just done the timing belt on my V6 XM. Wasn't to bad a job but it wasn't a 5 minute job either.

If you wish, PM me your email address and I'll forward you the Citroën workshop manual that CitroJim sent me with regards to doing the belt.

One thing that everyone advises is to upgrade to the later C5 style tensioner as it's a million and one times easier to set the tension up.

Regards

David.

IIRC correctly there are two bolts in the bottom of the box? ECU slides out to gain access to them.

The later tensioner is much better, there is one caveat though....

If you change the tensioner you may need to change the waterpump to match. There are a variety of waterpumps and so it depends on what you currently have as to whether you need to change it.

Failing that you can modify the existing waterpump type to accommodate the later tensioner.

Post by **CitroJim** » 28 May 2011, 22:01

That was a good double posting Toby. Thee and me at EXACTLY the same time

Toby_HDi · Post by **Toby_HDi** » 28 May 2011, 22:16

You were much more detailed though Jim, and confirmed there are bolts there. I couldn't recall if there were or not.

I must confess it has been so long since I've properly worked on the Activa that I have forgotten a great deal. On the flip side, I can remember Coupé related items fairly well!

lexi · Post by **lexi** » 28 May 2011, 22:50

Thank playmates. Was thinking this was way to get ecu box out Jim but did not want to start pulling. I knew the bolts were there as I managed to get one out but could not see the other.

Will mail you David. Thanks Toby.

Mmm...Mrs Lexi was holding my lever......... (steady guys)....... and was saying non complementary things about Cits. She is now BANNED from taking V6 if her Honda breaks down.

. I might even paint a few spheres yellow and put them in her fruit bowl

Post by **CitroJim** » 29 May 2011, 08:39

lexi wrote: I might even paint a few spheres yellow and put them in her fruit bowl

Careful Lexi, she might just go bananas....

lexi · Post by **lexi** » 29 May 2011, 09:15

Nice one!