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        General >> Give/Need advice to/from others >> 24V Vacuum hose Guide.
        
(Message started by: twinturbo on Oct 29^th, 2006, 7:31pm)

Title: 24V Vacuum hose Guide.
Post by twinturbo on Oct 29^th, 2006, 7:31pm

Ok I am starting this thread as a Guide to how and where all the VAC hoses should be connected on the 24V.

Ok this was spurred on by TINTIN who's 24V seems to be in a right 2.8 thanks to the garage not putting it back correctly.

Ok first installment..

http://www.rob1tt.f2s.com/Images/scorpio/vac1.jpg

These two stubs on the inlet manifold are joined together at a T-piece, and then to the larger pipe by a t-pice. One branch goes to the cam cover on the passenger side bank. the other goes off down to the drivers inner wing. ( As yet to be determined location.. )

Another pipe of similar diameter to the big one shoudl also be routed in the same location, this pipe is NOT a vacume pipe and is actualy the breather from the drivers CAM cover. int TINTINS case this had been wrongly routed over the top of the plenums.

Next instalment soon..

to Come..

Fuel pressure regulator,
Servo.
EGR.
EVAP.
VIS.
AirCon.

TT

Title: Re: 24V Vacuum hose Guide.
Post by adowds on Oct 30^th, 2006, 11:37am

Ace mate. I can't blame a garage for my 2.9's 2.8, but this is gold dust...

I don't think mine was right to start with actually - I don't think I have that T-piece. Waiting next installment with bated breath!

Title: Re: 24V Vacuum hose Guide.
Post by tintin on Oct 30^th, 2006, 4:33pm

yep, definately a pint or two in it for you (or would you prefer a pack of pampers ;D )

once i get all the info, my car is going straight in to getting its sucking sorted, and a new cat/sensor.... might even cure this d**n rattle.....

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Nov 4^th, 2006, 5:36pm

Pt2..

Ok this is the overview of the plenum area on my 24V ( note some of these hoses were replaced today as the rubber had gone brittle and possibly leaking.. )

http://www.rob1tt.f2s.com/Images/scorpio/overview.jpg

Ok,

you will find on the upper driverside inlet 2 stubs ( 1 )( 2 ) these provide vacume to the EGR, VIS and CANP solenoides. VIS and EGR run of one pipe which branches near the inner wing. CANP runs of the other.. It does not matter which pipe is connected to which stub. These pipes run out round the front of the plenum ( 8 ) and you can also see the return from the VIS solenoid here ( 8 ).

This VIS pipe continues up to the VIS control valve on the front of the plenum ( 9 )( 11 )

( 3 ) is the feed to the fuel preasure regulator. this goes down to the regulator via ( 12 )( 10 ). The fule preasure reg is the cylindrical silver object near ( 10 ).

( 4 )&( 5 ) join the two plenums via a T pice( 7 ). This t-pice leads up to ( 6 ) which is a larger t-pice one branch going to the passenger cam cover and the other to????? ( to be confirmed )

These rear vac lines can be seen better here, and it also shows the breather hose which is not connected to the vacume system..

http://www.rob1tt.f2s.com/Images/scorpio/rearvac.jpg

Hope that's clearing things up..

TT

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Nov 5^th, 2006, 6:48pm

You can also see the EGR in the second pic.

Rather than detatch the valve pipe from the underside of the plenum I simply unbolted the pipe from the EGR valve.,,

The whole process. ( replacing o-rings, vac hoses and FPR ) took no more than an hour start to finish..

TT

Title: Re: 24V Vacuum hose Guide.
Post by tintin on Nov 6^th, 2006, 9:36pm

good work, fella, time to get my idle sorted :D

glad to hear yours is running sweet !

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Nov 6^th, 2006, 9:42pm

Get it done yourself m8.. Takes an hour tops...

Undoo all the 6mm ( if origano ) hose clips for the rubber plenum hoses, remove the resonator box on the inlet pipe. Unbolt the EGR valve ( 2 bolts accessible from around the gearbox dipstick area. 1 bolt holding the throttle cable braket to the passenger plenum...

Wiggle the VIS out, wiggle the throttle body/center plenum out...

Then it's all laid bare...

Pair of new o-rings... Check all the hoses, and then all back togehter... Bit of instant Gasket on the EGR pipe flange faces and your sorted...

EASY job no nead to remove the plenum spiders at all..

TT

Title: Re: 24V Vacuum hose Guide.
Post by tintin on Nov 6^th, 2006, 10:45pm

yep, im thinking if they have to do the n/s cat, and a hydraulic tappet on that side, its more than a roadside repair, might as well just get them to rip it apart, and put it all back together (hopefully in the right order !!). if it was just the hoses i would, but it all has to come apart anyway.....

Title: Re: 24V Vacuum hose Guide.
Post by DJWerkz on Nov 7^th, 2006, 10:38pm

What recommendations do you have for replacement vacuum pipes?

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Nov 7^th, 2006, 10:56pm

Any notor factors can supply length of hosing..

Full rubber hosing with braided covering is the best, but not easy to get.

Manufactures use plastic tube with rubber elbows but the tube melts on hot surfaces..

Basic rubber vac tube us ok, or get silicone hoses..

TT

Title: Re: 24V Vacuum hose Guide.
Post by DJWerkz on Nov 7^th, 2006, 11:37pm

Know of any brands of the full rubber braided hosing?

Maybe I will check the Summit Racing catalogue in the USA, they usually have a great range. Pity, I was actually in their Reno store last week,...got a nice MOPAR t-shirt though,...hehehe

Title: Re: 24V Vacuum hose Guide.
Post by DJWerkz on Nov 25^th, 2006, 11:18pm

What would you ay the overall length of vacuum tubing would be if one were to replace all the vacuum pipes?

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Nov 25^th, 2006, 11:23pm

2-3m In the engine bay.

Depends if you replace the rigid lines too ( there should be no need unless they are melted. )

TT

Title: Re: 24V Vacuum hose Guide.
Post by DJWerkz on Nov 27^th, 2006, 12:22pm

Please see drawing: http://www.fordscorpio.co.uk/images/coscontrol.gif

Item 13 has three hose connections on one end but on my car I can only find two vacuum hoses running into it. These two hoses are joined at the end with a rubber grommit type thingy, which only allows you to connect them on one way.

This leaves a more central connection without anything connected. Is this correct or am I missing something?

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Nov 27^th, 2006, 1:57pm

16 is a 2 port part connected to 13's 3 ports.

Or at least that's how it looks in the diagram. Not checked physical.

TT

Title: Re: 24V Vacuum hose Guide.
Post by cossieguy on Dec 12^th, 2006, 11:46am

TT, i'm looking to remove my throttle body to give it a good clean out but i'm a bit unsure how to go about it. Read your write up above but could you go into a little more detail please. On most cars you just remove inlet and there it is but a little more complicated on cossie. Sorry to sound a bit of a biff, but once i've done it once with some guidance i'll be confident, it's my only car and can't afford to mess things up.
Guy.

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Dec 12^th, 2006, 12:25pm

Unbolt the EGR at the back drivers side,
Undoo the 6 hose clips securing the 3 plenum joins.
Unbolt the throttle cable mount from the passenger plenum.
Riggle out the VIS unit between the front of the two plenums.
Disconnect wiring from TPS & ISCV.
you should now be able to riggle out the throttle housing.

TT

Title: Re: 24V Vacuum hose Guide.
Post by cossieguy on Dec 12^th, 2006, 2:03pm

Right can put names to the pictures now, before i wasn't sure what the plenums were! now i understand ;) Will give this a bash over weekend. To replace the hoses what size core are they? The reason i ask is my idle is weird, it starts at a steady 750rpm but as the engine warms up and the car is driven it wonders from about 800 down to 700 and back to 800 etc not as serious as some peoples idle problems but very annoying none the less, any clues? Have cleaned the MAF and have a new IACV fitted. Cleaning the MAf appears to have gotten rid of my surging idle (1000 rpm) when engine was hot. Cheers Guy.

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Dec 12^th, 2006, 10:36pm

Before you start, spray some wd40 on the back passenger join and see if the engine note changes.. If it does then you need two new o-rings, they will probably need replacing anyway.

TT

Title: Re: 24V Vacuum hose Guide.
Post by cossieguy on Dec 12^th, 2006, 11:50pm

TT, don't laugh but does each of the plenum joins have 2 O rings?(Have never looked) If so will look to replace the lot (Expensive?) I assume when you say O rings its like a plastic/rubber circle gasket type thing that sits between the two sides/joins inside a groove.(Could i be more vague?)
Guy.

Title: Re: 24V Vacuum hose Guide.
Post by twinturbo on Jan 7^th, 2007, 7:21pm

Only the rear passenger joint has o-rings.

TT