FIXED - THANKS - Xantia 155bhp/2.0/16v ACAV question
Moderator: RichardW
FIXED - THANKS - Xantia 155bhp/2.0/16v ACAV question
Xantia 155bhp/2.0/16v air intake DIAPHRAGME question
Guys,
Anyone know what the purpose of the two DIAPHRAGMES (like two UFOs) that sit at both ends of the Air Distributor box & intake manifold on 2.0 16v 155bhp XU10J4 unit (1994)?
I realise they work by vacuum action and should work together. Only ask as I’ve just noticed mine have stopped moving when excerptor is revved. The pistons that project out of the bottom of two DIAPHRAGMES used to move in and out together with accelerator.
Cheers
Steve
Guys,
Anyone know what the purpose of the two DIAPHRAGMES (like two UFOs) that sit at both ends of the Air Distributor box & intake manifold on 2.0 16v 155bhp XU10J4 unit (1994)?
I realise they work by vacuum action and should work together. Only ask as I’ve just noticed mine have stopped moving when excerptor is revved. The pistons that project out of the bottom of two DIAPHRAGMES used to move in and out together with accelerator.
Cheers
Steve
Last edited by sbraud on 10 Aug 2006, 13:00, edited 3 times in total.
95 Xantia 20/16v 155 bhp VSX 210k
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
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- Posts: 1260
- Joined: 01 May 2004, 19:49
- Location: United Kingdom
- My Cars: Current - Slightly modified 2016 Pug 308 Puretech 130 Allure
Past:
2003 - 206 GLX TU3JP & 206 SE ET3JP4
1995 - 405 Executive XU10J2
1996 - 406 GLX XU10J4R
1994 - 405 GTX XU10J2 - x 1
These units have been known to fail, There is a test you can do in the Haynes 405 book of lies that pin points where the fault could be.
I dont have a copy though.
Someone on here will know how to test them.
Its the AVAC system
Have you checked the pipes are all ok? Also are the push rods free to move in & out?
I dont have a copy though.
Someone on here will know how to test them.
Its the AVAC system
Have you checked the pipes are all ok? Also are the push rods free to move in & out?
Thanks again PowerLee,
Didn't know about Pug 504 sharing same unit. I'll check out Haynes 504 manual.
Cheers
Steve
Ps. Any idea what AVAC stands for ?
Didn't know about Pug 504 sharing same unit. I'll check out Haynes 504 manual.
Cheers
Steve
Ps. Any idea what AVAC stands for ?
95 Xantia 20/16v 155 bhp VSX 210k
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
Last edited by sbraud on 15 Jul 2006, 08:20, edited 1 time in total.
95 Xantia 20/16v 155 bhp VSX 210k
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
A Big Thank You to PowerLee, wheeler and all you guys!
I don’t want to get all emotional on you, but I just want to say THANK YOU!! This forum never ceases to amaze me with it’s knowledge and wisdom, time after time. 8)
In tracking down one problem, above, I’ve (You’ve) found two others I posted some time ago and never quite got round to sorting.
http://www.frenchcarforum.co.uk/forum/v ... highlight=
http://www.frenchcarforum.co.uk/forum/v ... highlight=
Anyone know if ACAV electro-valve is readily available or is it Cit dealer only?
Cheers
Steve
Ps. I had forgotten what 155bhp felt like, as I left this unresolved for too long and boy does she shift now. 11 years in and still having FUN !!
I don’t want to get all emotional on you, but I just want to say THANK YOU!! This forum never ceases to amaze me with it’s knowledge and wisdom, time after time. 8)
In tracking down one problem, above, I’ve (You’ve) found two others I posted some time ago and never quite got round to sorting.
http://www.frenchcarforum.co.uk/forum/v ... highlight=
http://www.frenchcarforum.co.uk/forum/v ... highlight=
Anyone know if ACAV electro-valve is readily available or is it Cit dealer only?
Cheers
Steve
Ps. I had forgotten what 155bhp felt like, as I left this unresolved for too long and boy does she shift now. 11 years in and still having FUN !!
95 Xantia 20/16v 155 bhp VSX 210k
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
-
- Posts: 42
- Joined: 09 Nov 2005, 14:24
- Location:
- My Cars:
What were the symptoms?
I too have the 2.0l VSX and mine seems to be doing the same as yours as in the diaphragm thingys dont seem to move much if at all. I posted some pics of them last year but got no response as to what they were. How much did yours cost (AVAC) cos my car aint got as many horses as it should have. Other than that what a great car.
-
- Posts: 42
- Joined: 09 Nov 2005, 14:24
- Location:
- My Cars:
What were the symptoms?
I too have the 2.0l VSX and mine seems to be doing the same as yours as in the diaphragm thingys dont seem to move much if at all. I posted some pics of them last year but got no response as to what they were. How much did yours cost (AVAC) cos my car aint got as many horses as it should have. Other than that what a great car.
-
- Posts: 42
- Joined: 09 Nov 2005, 14:24
- Location:
- My Cars:
Same problem
My vsx does the same thing how much do the AVAC things cost?
Sorry for late reply Andy... In my defence I was on holiday 8)
I’ve not had to replace ACAV air intake units as my problem is ACAV electro-valve. I’m still waiting to pick one up from my local friendly Cit dealer
I tied them open to track down problem and it made a huge difference to performance. Can’t wait to get thing working properly as it should.
I would say if both units are not working there’s a good change your electro-valve is shot/blocked.
There is a good thread on here http://www.frenchcarforum.co.uk/forum/v ... light=acav
I’ve got a diagram of set-up I can email if you send address.
Cheers
Steve
I’ve not had to replace ACAV air intake units as my problem is ACAV electro-valve. I’m still waiting to pick one up from my local friendly Cit dealer
I tied them open to track down problem and it made a huge difference to performance. Can’t wait to get thing working properly as it should.
I would say if both units are not working there’s a good change your electro-valve is shot/blocked.
There is a good thread on here http://www.frenchcarforum.co.uk/forum/v ... light=acav
I’ve got a diagram of set-up I can email if you send address.
Cheers
Steve
Last edited by sbraud on 14 Aug 2006, 08:12, edited 1 time in total.
95 Xantia 20/16v 155 bhp VSX 210k
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''
97 Saxo 1.1 SX 100k
03 S-Type Jag (sorry!)
``Only standing on the shoulders of giants - The more I know, the less I understand?? Ignorance is bliss! ''