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1

Omega Electrical and Audio Help / Car Horns Won't Shut UP

« on: 01 March 2021, 19:01:54 »

Hi Guys

Is there anyone out there who loves solving electrical problems and can suggest something I could try.

The problem is the horns on my Omega have decided to start blasting for no apparent reason, also when I press the horn button on the steering wheel they don’t stop sounding when I release the button and I’ve already removed the power sounded.

And another weird thing I’ve found, if I remove the ignition key the display unit won’t go out, but the stupid thing is when the horns got stuck on and I pulled the relay to them to shut them up, the display unit worked perfectly ie comes on when the ignition is switched on and switches off when the key is removed.

Anyone got any ideas?

2

Omega General Help / Propshaft Bearing Replacement Help Needed

« on: 04 September 2020, 21:15:43 »

Hi Guys

I need to replace the propshaft bearing on my 2.5TD Omega, I’ve removed the six nuts and bolts at each end of the shaft plus the bolts holding the centre bearing housing to the car underside.
I’ve tried levering it at each end while trying to waggle it in the middle to try and get it to slide on the splines in the middle of the shaft but it won’t budge, not that its very easy to lever because of the rubber flexi joints at both ends which I’m trying not to damage.

I’ve pulled the rubber gaiter back which covers the splines and they seem clean enough from what I can see.
For now, I’ve sprayed some WD40 on them, but in the meantime has anyone out there had the same problem if so, what did you do to get around the issue?


Thanks to anyone who can help

Clive   

3

Omega General Help / Omega 2.5TD Propshaft Removal

« on: 16 June 2020, 22:24:50 »

Hi Guys

Is there anyone out there still trying to keep a Vauxhall Omega 2.5TD on the road.
Having said that mine has started making an awful noise which I think is coming from the gearbox so it may well be the end of the road for it.

The noise disappears when the box is in neutral and just the engine running, I say I think its coming from the gearbox and then I got to thinking could it be coming from the propshaft.

So, my master plan was to disconnected the propshaft from the gearbox as it would eliminate the rear axle or anything else which takes its drive from the gearbox.
Now this is where I’m not sure what I’m doing, I’ve taken the three bolts out where the propshaft connects onto the gearbox see in the attached photo and I’ve also remove the two screws which hold the bracket which in turn supports the bearing it’s about half way along the drive shaft.
I then tried to lever the propshaft off the back of the gearbox but it doesn’t seem to want to part, is there something I’m doing wrong??

Again, see my photos for clarification on where I’ve put the lever in an attempt to part the propshaft for the gearbox.
Rightly or wrongly I was then going to start the car and go through the gears to see if the noise was still there but I don’t know if oil will come out of the box?


Does anyone have any ideas on the above and thanks to anyone who can shed some light.

Clive

https://photos.google.com/share/AF1QipM9SzeVtP4DvlWnRc6LJPUOfbow1oRD0V2ClxDilA9zbDb0DtjuZ3A67G0Tnl6LMg/photo/AF1QipOixJfFxO6F7hJDN977NkSEZhh63cqqXX4Str8Y?key=MW9iNDBGRzh5Mm5rOGRNb2ZXMGhlVkM0VFZIVk9B

https://photos.google.com/share/AF1QipN-jGVPhonDUI5wTQqN96CVK0ocSAOp1Fd9Y3iU7J2YGn5lzD6RXBMFNBZjMQZNQA/photo/AF1QipOydHb0Lw2pkXSuOonk1wCmaTou5dszObwM8OMp?key=OEVQU3BkQXhWc2hiMjhHMzZLZnNId3BfdEttSDlR

https://photos.app.goo.gl/3d4jGR8vcxwwQcMB7

4

Omega General Help / Bracket

« on: 10 September 2019, 22:47:44 »

Hi Guys

I’ve done a silly, I’ve taken the power steering pump and alternator off my Omega 2.5TD and ended up with this bracket but can’t for the life of me see where it should fit.

Can anyone out there send a picture or sketch of where it should go.

Thanks to anyone who can help

[img]Hi Guys

I’ve done a silly, I’ve taken the power steering pump and alternator off my Omega 2.5TD and ended up with this bracket but can’t for the life of me see where it should fit.

Can anyone out there send a picture or sketch of where it should go.

Thanks to anyone who can help
https://i.postimg.cc/sxssDn0r/P1000333.jpg

5

Omega General Help / Power Steering Flushing

« on: 30 August 2019, 15:59:50 »

Hi Guys

Has anyone out there got any bright ideas, first off I’m talking about the Omega with the 2.5 L diesel engine not that I think in this instance it will make any difference if it was petrol.

My problem is the power steering has packed up and the fault was traced to the pump which has now been taken off and sent for repair.
The repairers have said the system needs to be flushed out before fitting the repaired pump which all makes good sense to me.

Ok there are two pipes which connect onto the fluid top up reservoir, one goes down and connects to the power steering pump via a banjo union unlike the one shown at B in the image but the same as the one shown at A.

Does anyone know the best way to flush the system out from the banjo at A, or could I simply pour fluid in at point C until it comes out at banjo A, although I think point C is the return fluid pipe so I would be flushing the system in reverse if you get my meaning.
Circuit-4.jpg](https://postimg.cc/vgRFpCNT)

Thanks to anyone who can shed some light

Clive

6

General Discussion Area / Image Upload

« on: 30 August 2019, 13:27:25 »

Hi

I want to upload an image onto this forum which I have stored on Google, does anyone know how to do it, click by click please as it does not take much for me to get lost.

My thanks to anyone who can advise.

Clive

7

Omega General Help / Omega Clutch

« on: 22 November 2018, 23:20:28 »

Hi Guys

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

Just to recap, start the engine and the car won’t 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 isn’t going down in the shared brake reservoir.

Tried bleeding the concentric slave cylinder problem still persists.

There’s 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 there’s 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 it’s working as it should.

I don’t 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

Clive

8

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

Clive

9

Omega General Help / Air Con Screw

« on: 29 June 2018, 22:25:07 »

Hi guys

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

It’s got to be worth a try, I need a replacement screw and spacing washer for the clutch on my air con compressor.
I’ve 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 don’t care if the compressor is knackered as it’s just the screw I’m after, or if someone just happens to have their compressor off and doesn’t mind posting a view pics and some measurements of the screw I’ll try and get one made.

Thanks to anyone who can help

Clive

10

Omega General Help / Air Con Clutch Fallen Off

« on: 25 June 2018, 11:48:57 »

Hi Guys

Can anyone shed some light please, I’ve got a Vauxhall Omega Estate 2.5TD, it’s the one with the 6 cylinder BMW lump in it.
I’m guessing the fit may be the same as petrol Omega’s 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 can’t 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.

Clive

11

Omega General Help / Viscous Fan Removal

« on: 12 June 2018, 19:35:06 »

Hi Guys

First off I'm talking about an Omega 2.5TD the one with the 6 cylinder BMW lump in it.

If standing outside the car looking straight at the windscreen which way do I need to turn the nut in order to remove the viscous fan?
I believe it's a left hand thread, but I'm still not sure if it needs turning anticlockwise or clockwise in order to get the fan off?

Thanks for your help

Clive

12

Omega Electrical and Audio Help / Vauxhall Omega 2.5TD Water Temperature Sensor

« on: 06 May 2017, 13:08:20 »

Hi Guys

Can anyone out there help me, I'm trying to find somewhere I can purchase a water gauge temperature sensor for the Omega 2.5TD, it's the part which screws into the cylinder head.
Vauxhall's part number for it is 90510660, unfortunately they no longer stock this item.

I'm after a new one rather than a used one, I've tried searching on the internet but haven't found anywhere in the UK which has one in stock, obviously not all places appear  on search results.

I've even thought about purchasing from abroad but the language barrier is a bit of a pain.

Does anyone know where I can buy a new one of these items from in the UK or abroad if they have dealt with companies and had no issues in doing so.

Cheers

Clive

13

Omega Electrical and Audio Help / Water Temperature Gauge

« on: 19 March 2017, 19:15:06 »

Hi Guys

I'm really hoping someone out there can help me, first off I'm talking about a Vauxhall Omega 2.5TD the one with the 6 cylinder diesel lump in it although for my problem I don't think it matters what engine is in it.

My problem, the water temperature gauge has stopped working by that I mean the needle doesn't move off zero even when the car is up to full running temperature.

What I've done so far, both sensors have been removed from the car, the plug to the sensor nearest the bulkhead has two pins in it, when a voltmeter is connected to them and the ignition is switched on I get a reading of 5 volts.

The plug which fits onto the sensor nearest to the radiator has one pin in it when a voltmeter is connected to the pin and battery earth and the ignition is switched on I get a reading of 11.9 volts.
If I then connect a variable 1k Ω potentiometer between the pin in the plug and battery earth thus bypassing the sensor and switch the ignition on the water temperature gauge does not move, if I turn the spindle on the potentionmeter and check again the water temperature still does not move.

I'm assuming the senor with the single pin plug is the one which controls the water gauge, has anyone got any ideas where to go from this point??

Thanks to anyone who can shed some light

Clive
     

14

Omega Electrical and Audio Help / Omega Water Temperature Sender Unit

« on: 04 December 2016, 22:57:18 »

Hi Guys

First off, I’m talking about a year 2000 Vauxhall Omega 2.5TD, in other words the one with the 6 cylinder BMW lump in it.

I’m having some trouble with the water temperature gauge, the indicator needle hardly moves and that’s after about 30 miles of driving, the car heater is working fine.
I’m assuming the fact the needle does move but only very slightly the fault must be the sender unit(s).

Questions:

Is there only one sender unit for the water temperature gauge?

Where does it (they) live, I’m guessing under the darn inlet manifold?

Does anyone know the part number for them or better still where I can buy one, other than the main agents that is?


Thanks for your help

Clive

15

Omega General Help / Flywheel

« on: 11 March 2015, 13:58:34 »

Hi Guys

Can anyone shed some light, I think I’m in line for a replacement clutch, which I will buy myself and then get a garage to fit it.

Obviously I don’t want to cock it up and get the wrong clutch as it needs to be compatible with the existing flywheel.
Can anyone out there tell me, does the Omega 2.5TD year 2000 have a dual mass or a solid one fitted as standard?

I’ve got a part number for the flywheel from a main agent 90578064 but they can’t tell from their pictures if it’s solid or dual mass  .

By the way the price for a new flywheel from the main Vauxhall agents is £618.00 + Vat, so that's a mere £741.60 as of 11/03/2015.

Thanks for any help

Clive