Omega Owners Forum

Chat Area => General Car Chat => Topic started by: Field Marshal Dr. Opti on 19 August 2015, 15:23:15

Title: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 19 August 2015, 15:23:15
The symbol between the speedo and rev counter is showing but nothing on the central display.

Temperature is fine and I can't find any leaks......(hard to spot in the rain)

Female hissy fit like the Omega?.......or........£150 scrap value? :D ;D
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 19 August 2015, 15:48:28
Unlike the mighty MV6 the coolant bottle is opaque so I have to wait for the old girl to cool down a little.
Title: Re: Sigvec coolant warning.
Post by: 05omegav6 on 19 August 2015, 16:32:42
Anywhere near 100k?

If so, suspect rad...

Undo the four screws on the slam panel and the two where the bumper meets the wheel arch and carefully peel the bumper back for a better view...

Replacement is a doddle, but bumper needs to come off fully to do... only three further clips underneath :y
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 19 August 2015, 17:32:50
Anywhere near 100k?

If so, suspect rad...

Undo the four screws on the slam panel and the two where the bumper meets the wheel arch and carefully peel the bumper back for a better view...

Replacement is a doddle, but bumper needs to come off fully to do... only three further clips underneath :y

Thanks, Al. I'll take a  look.

Mileage is currently 66000 miles.

After switching off the engine than starting it again the yellow coolant alert light has now gone. :y

What about coolant change? Does it use GM 5 year red like the Omega or is it one of these 'sealed for life and no need to change' jobbies?
Title: Re: Sigvec coolant warning.
Post by: STEMO on 19 August 2015, 17:43:33
Sealed for life coolant system? Sure you not getting mixed up with batteries?
Title: Re: Sigvec coolant warning.
Post by: 05omegav6 on 19 August 2015, 17:45:58
VX red plus distilled water... Think it's around 10 litres from memory, but check the handbook :y

Broadly speaking, the 2.8 is a similar layout to the 2.6/3.2 iirc, so removing the covers might give you a glimpse into the V for any signs of coolant there...

Also the bottle has a vent, any signs of coolant there? This does rather assume that the coolant bottle lives on the bulkhead behind the battery on the v6... If there is coolant here, suspect cap ;) Working from distant memory as it's a while since I looked at a v6 Vectra...
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 19 August 2015, 17:53:43
No sign of coolant loss anywhere.

Dry as a nun's pussy.

I shall take this as a good omen. :)
Title: Re: Sigvec coolant warning.
Post by: 05omegav6 on 19 August 2015, 18:04:50
Wouldn't hurt to swap the cap any ways :y
Title: Re: Sigvec coolant warning.
Post by: Sir Tigger KC on 20 August 2015, 00:03:31
On dear, seems our Lord Opti has bought a lemon!  :'(
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 20 August 2015, 09:38:59
On dear, seems our Lord Opti has bought a lemon!  :'(
No I have not. ;)

I shall soon be buying myself a 'I love my Signum T-shirt' :P :P :P :P

This will make all the girls knickers magically drop to their ankles. :D ;D
Title: Re: Sigvec coolant warning.
Post by: STEMO on 20 August 2015, 12:50:35
On dear, seems our Lord Opti has bought another lemon!  :'(
Fixed.
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 20 August 2015, 13:09:51
On dear, seems our Lord Opti has bought another lemon!  :'(
Fixed.

You're only jealous because the Signum is the 'must have'  car for A-lists celebs. :P :P :P

I'm pretty sure that Bruce Willis own a Signum. ;) ;D
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 20 August 2015, 13:11:48
 For the purpose of clarification  I  refer to the Bruce Willis from Doncaster.......not Hollywood. :)
Title: Re: Sigvec coolant warning.
Post by: STEMO on 20 August 2015, 13:15:38
Jealous.....yeah.....that must be it. :D

Swap yer for an underpowered but very frugal Astra estate. I'll even pay for the respray.
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 20 August 2015, 13:18:56
Jealous.....yeah.....that must be it. :D

Swap yer for an underpowered but very frugal Astra estate. I'll even pay for the respray.

Is this the car that is the colour of Linda Blair's projectile vomit in The Exorcist?... :)

Title: Re: Sigvec coolant warning.
Post by: STEMO on 20 August 2015, 13:23:40
Jealous.....yeah.....that must be it. :D

Swap yer for an underpowered but very frugal Astra estate. I'll even pay for the respray.

Is this the car that is the colour of Linda Blair's projectile vomit in The Exorcist?... :)
I'm not sure. Was Linda's disgorgement silky shadow green?  :-\
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 20 August 2015, 17:51:48
Away from projectile puke it seems that Vauxhall has no guidelines for changing the coolant.

Reference only to 'topping up.'
Title: Re: Sigvec coolant warning.
Post by: STEMO on 20 August 2015, 18:06:40
Away from projectile puke it seems that Vauxhall has no guidelines for changing the coolant.

Reference only to 'topping up.'
How hard can it be? If you own an omega, you simply wait until the HBV lets go. ;D
Title: Re: Sigvec coolant warning.
Post by: Phil on 21 August 2015, 06:28:54
Expansion tank is a known issue. They crack, its almost impossible to see the leak. Some were changed by Vxl FOC but its not a recall

NeoBros for a replacement (sold for SAAB but does fit as I got mine from them) at about £40 but you need to swap the level sensor over.

Other common problem is the two little pipes that run from the expansion tank to the top of the turbo, they tend to wear and leak at the jubilee fitting, you cant just cut the pipe as they are tapered at the ends. Water drops on turbo heat shield so very difficult to spot

Pipes come as part of the expansion tank kit.

These little pipes are also swapped round for reasons that escape me right now, but apparently its better if they are.

New cap is the other option if you can see any stains on the bulkhead sound deadening
Title: Re: Sigvec coolant warning.
Post by: Field Marshal Dr. Opti on 21 August 2015, 11:48:01
Expansion tank is a known issue. They crack, its almost impossible to see the leak. Some were changed by Vxl FOC but its not a recall

I have documentation that this has been remedied  so hopefully it is not the problem.



Other common problem is the two little pipes that run from the expansion tank to the top of the turbo, they tend to wear and leak at the jubilee fitting, you cant just cut the pipe as they are tapered at the ends. Water drops on turbo heat shield so very difficult to spot

I have just ordered these two small pieces of rubber pipe. They both have a nasty bulge and one is starting to split.

Pipes come as part of the expansion tank kit.
These little pipes are also swapped round for reasons that escape me right now, but apparently its better if they are.


Yes, I have heard this also. I believe that one end of the pipe is thicker than the other.




New cap is the other option if you can see any stains on the bulkhead sound deadening

The cap is yellow and shows no signs of staining. I'm guessing that it was replaced with the expansion tank.