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Messages - Clive of India

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Omega General Help / Omega Clutch
« on: 22 November 2018, 23:20:28 »
Hi Guys

Iíve posted on here some time ago about an issue Iíve got with the clutch in my Omega 2.5TD with a manual gearbox.

Just to recap, start the engine and the car wonít go into gear, keep a steady pressure on the gear lever turn engine off and it goes straight into gear no problem.

The fluid level isnít going down in the shared brake reservoir.

Tried bleeding the concentric slave cylinder problem still persists.

Thereís no clutch slip when accelerating hard or going up hill.

Once the car is running within a few minutes the gears go in no problem, and by a few minutes I mean in the time it takes to reverse the car off my driveway.

Question 1: Is there another cylinder behind the clutch pedal, if not does anyone know how the system works, ie when pressure is applied to the clutch pedal how does it force fluid down the pipe to the concentric cylinder if thereís no cylinder attached to the clutch pedal.

Question 2: Is there a way of testing the brake master cylinder to find out if the rubbers inside it are simply allowing fluid to pass back and forth over them.

Question 3: If there is another cylinder at the back of the clutch pedal is there any way it can be tested to see if itís working as it should.

I donít want to go rushing straight in and buy a new complete clutch and concentric cylinder plus a new dual mass flywheel, well at least not without checking the other items out first.

Thanks to anyone who can help


Omega Electrical and Audio Help / Re: Onboard Display Gone Dim
« on: 29 July 2018, 23:06:35 »

I thought all the small character sections were made up from small diodes surely if they are 4 bulbs it wouldn't have any effect on the lettering if you get my meaning.



Omega Electrical and Audio Help / Re: Onboard Display Gone Dim
« on: 29 July 2018, 23:00:58 »
Diamond Black Geezer

Are these bulbs by any chance marked in red, I took this photo some time ago when I had the instrument cluster out for some other issue ages ago.

Omega Electrical and Audio Help / Re: Onboard Display Gone Dim
« on: 29 July 2018, 22:52:34 »
Hi GastronomicKleptomaniac

If only it were that simple, nah no chance, it's a bit difficult taking photos in the dark but for what its worth take a look at the image I've uploaded especially where I've maked it in red.

But thank you for your prompt reply


Omega Electrical and Audio Help / Onboard Display Gone Dim
« on: 29 July 2018, 22:06:01 »
Hi Guys

The onboard screen display has gone dim but only on the one half, all of the diodes are still working in so far as there are no missing segments.
Does anyone have any idea what wrong with it?

Thanks for your help


Omega General Help / Re: Air Con Screw
« on: 04 July 2018, 22:59:30 »
Hello Lee

Sorry Iím a bit late answering, many thanks for the lowdown I have to admit it is a bit difficult trying to find things out about specific compressors but I suppose at the end of the day I could do just as you say see what happens ie if the gap is too wide the clutch simply wonít engage so just keep reducing the spacer thickness until it does.

When I took the car in to get the refrigerant evacuated they told me there was none in the system I guess it must have leaked out so heaven knows how I going to find out how much needs to go back in and from what Iíve read itís quite a science.

Omega General Help / Re: Air Con Clutch Fallen Off
« on: 04 July 2018, 18:18:52 »
Hello Keith

Thank heavens it didn't do a lot of damage lol.
Have you fixed it all yet or got rid of it.

Omega General Help / Re: Air Con Clutch Fallen Off
« on: 02 July 2018, 22:20:49 »
Keith ABS

Iv'e got the facelift model year 2000 so I'm not sure if what you have will fit mine unless someone can advise otherwise.
Sorry about the one photo fellas I'm still trying to get use to uploading images

Omega General Help / Re: Air Con Clutch Fallen Off
« on: 02 July 2018, 22:16:08 »
Keith ABS

Iv'e got the facelift model year 2000 so I'm not sure if what you have will fit mine unless someone can advise otherwise.

Omega General Help / Re: Air Con Clutch Fallen Off
« on: 02 July 2018, 22:11:40 »

Thank you for your reply, Iv'e just managed to sort out how to upload photos as it does make life a bit easier  :)

Omega General Help / Re: Air Con Clutch Fallen Off
« on: 02 July 2018, 22:07:52 »

I did the sketch but had the headache of finding a website where I could upload the photos for free, I did use Photobucket which is no longer free and photos that have been posted on forums through them are no longer visible, what a bind that is.

I have tried a couple of breakers one being called without much success, I was thinking these Omegas are getting that old now especially the diesel Iíll be lucky to find anything.

So, I got to thinking why buy a compressor if itís just a simple thing like a screw and spacer which has gone missing.

Iíve got to say to everyone on here who replied, I have just seen the light how stupid can one be.
Iíve just been watching a youtube video only to discover itís not the whole clutch which slides along the splines of the shaft as I thought, heaven knows where I got that idea from.
I wear varifocals so if anyone asks why I thought that Iím going to swear blind I was looking through the wrong part of the lenses lol.

The one part of the clutch doesnít move at all, itís just the outer part that does all the moving in and out towards the driven pulley.

Iíve just run another check on the compressor with it off the car only to find clutch is not moving, when I connected some jumper leads from a battery onto the two pins of the plug it arched as though there was some kind of short, so Iíve done a resistance test with a multimeter and came up with a reading of 0.8 ohms.
Iím guessing thatís bad news because on a couple of American cars on youtube they are talking about the resistance should be between 3 to 5 ohms.

Maybe it would be cheaper just to simple ride around with windows open if its too hot inside the car.

Omega General Help / Re: Air Con Clutch Fallen Off
« on: 29 June 2018, 22:51:47 »
Hi Doctor Gollum

Thanks for your reply, Iv'e watched one or two youtube videos and most of the clutches are simply held on by a big screw with a spacer washer, I just wish I could get hold of an exploded view of the omega set up.
I don't want to go to the trouble of buying the complete compressor for such a small item.

Omega General Help / Air Con Screw
« on: 29 June 2018, 22:25:07 »
Hi guys

First off, Iím talking about a Vauxhall Omega 2.5TD, the one with the six cylinder lump in it.

Itís got to be worth a try, I need a replacement screw and spacing washer for the clutch on my air con compressor.
Iíve tried an ordinary M6 screw but it just locks everything up once its tighten so I assume the screw must be a bit special, because it should allow the clutch to slide along the spline shaft once the air con is switched on.

Does anyone out there have the correct screw they want sell or the compressor, I donít care if the compressor is knackered as itís just the screw Iím after, or if someone just happens to have their compressor off and doesnít mind posting a view pics and some measurements of the screw Iíll try and get one made.

Thanks to anyone who can help


Omega General Help / Air Con Clutch Fallen Off
« on: 25 June 2018, 11:48:57 »
Hi Guys

Can anyone shed some light please, Iíve got a Vauxhall Omega Estate 2.5TD, itís the one with the 6 cylinder BMW lump in it.
Iím guessing the fit may be the same as petrol Omegaís as far as the air con is concerned.

Right, the clutch has fallen off the air con compressor, luckily I did not loose it however the fixing screw and I assume spacer washer have gone missing, no doubt dropped off along the road somewhere.
The only thing I canít figure out is how the darn thing screws onto the air con compressor shaft.
I can see an M6 tapped hole in the shaft and tried putting a screw in it but when tightened it locks the whole thing up in other words it clamps the clutch hard against the rotating pulley meaning the compressor is running all the time the engine is running irrespective if the air con is switched on or not.
I also noticed the clutch has an M8 tapped hole in the middle of it, does anyone out there know what the fixing screw looks like and the spacer washer thickness.

Thanks to anyone who can sort me out.


Omega General Help / Re: Viscous Fan Removal
« on: 12 June 2018, 19:51:44 »
Hello Doctor Gollum

Thanks for the quick reply I'll give that a go tomorrow, I just need to find a way of stopping the water pump from turning at the same time.

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