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1

Omega General Help / Re: Radiator plastic

« on: 15 August 2025, 08:55:25 »

I had this exact same situation last week. the crack was near the top hose . so with the hose removed from the rad the crack was accessible from the inside ,  I bought a tube of hybrid adhesive/silicone  and applied it liberally over the cracked area with my finger. It is definitely a short term fix but   much better than trying to bond from the outside. On the inside the silicone is pushed on to the crack as the pressure builds.  so far it has held, but new radiator is ordered !

2

Omega General Help / coolant level sensor 'fix'

« on: 15 August 2025, 08:38:51 »

Like many others my coolant level sensor has not worked years, dash shows low level warning.
From research the only way to resolve this is to 'replace the tank'.
Taking the tank out and connecting to a meter I found the sensor did not 'switch' if I filled with water even though the float , floated perfectly.
However if I tipped the tank upside down so the float fell to the top then it switched every time. I also found if I lifted the float with a hooked wire it also worked
This intrigued me to the point that I had to find out what was happening here.
I stripped out the magnetic reed switch located under the tank. everything seemed ok there.
I then, with a sharp 6mm wood chisel carefully cut off the small ring of nylon that retains the washer at the top of the float stem. The 20mm approx washer could then be lifted off and then the float. It is too big to get out of the bottle but turning over the fault was revealed.  The magnet that is attached to the float is about the size of a thick M8 washer and is located in a recess on the underside of the float. The magnet had become detached from the float,  so when the the float raised the magnet stayed at the base of the stem, when turned upside down, the the magnet fell with the float, and with the wire hook; the hook went under the magnet and lifted it with the float. The magnet was a little bit corroded  but easily cleaned up .  I then glued the magnet back into the recess and replaced the float on the stem.  The nylon retaining washer is about 3mm thick so was just about able to countersink the hole so that the stem it sits on just protruded through the counter sunk hole. I then just heated the head of a 3" nail and carefully melted the bit of protruded stem into the countersunk area.
Sorted !   It took me hours to get to this stage but in fact now I know the issue its just  a half hour job.

3

Omega General Help / Re: weird front end when braking

« on: 30 July 2024, 14:50:11 »

Thanks all ..... I have had a look at arm bushes and trailing left seems rather soft and a bit bulging at the bottom . Also a significant groan noise when braking has stopped now I have sprayed it with silicone spray ( which I did to identify if it was the culprit)
Are single bushes normally replaced or is a new complete arm the best option?
This is a surprise if correct diagnosis as mileage is only a few k a year.

4

Omega General Help / Re: weird front end when braking

« on: 30 July 2024, 10:14:58 »

Pretty sure still original.   I have had tracking done, they said it was 'out' and corrected it.

5

Omega General Help / weird front end when braking

« on: 30 July 2024, 09:58:27 »

2003 Omega estate 2.2
Hi all. I initially had problems with the car pulling slightly left on braking , garage diagnosed a sticking caliper. ...L&R calipers and pads replaced. discs are quite new, swinging arms replaced a year ago . New tyres just fitted. pulling to the left is better but its still weird feeling when braking gently, and sometimes a slight pull ; could be either way. it been in to garage and all joints tested on shaker plates . Nothing suspect found.
Any ideas what check I ought to do next ....

6

Omega General Help / very high load!

« on: 27 February 2015, 11:55:01 »

Ok this is a strange one .......

As part of a building project a heavy steel beam need to be supported at one end while it is pulled into position .  impossible to give all the details. but

What are your thoughts on my old estate having a flat board on the roof bars that are mounted on the rails to spread the load supporting in the region of 450kg. 

I know this is well outside any recommendation limits but at around 112kg per roof mount point ......... !!!!! would it dent the roof ??  how much would the suspension lower under the load etc.

Any thoughts on what this would 'do' to my estate welcome . any one extreme roof loaded their Mig before ??

7

Omega General Help / Re: Alternator pulley

« on: 10 December 2011, 15:45:24 »

Thread was pristine when the new pulley was put on, it now has some slight damage to the outer 2 threads as a result of the pulley coming off.  But by what 'mechanism can it possible come off against the thread when the alternator is free to spin ??

8

Omega General Help / Alternator pulley

« on: 10 December 2011, 14:13:55 »

Hope  this is allowed as the question is about my wife's car, an Astra.    But i know some of you will be working on these regularly so hope you can help.    The free wheel pulley on the alternator was replaced yesterday as it was found to be completely free wheeling so it was not charging.  A new one was put on and it went on fine and tight with the ratchet. Ten miles driving later it came off . Thread on pulley is completely worn off and thread on shaft is just about OK .  My question is how could it come off against the direction of the thread ?? Alternator spins freely .  Any suggestions much appreciated. cheers

9

Omega Electrical and Audio Help / Re: Climate control won't maintain temperature

« on: 04 October 2010, 14:26:28 »

Thanks Kevin,   Is it ever the temp sensor itself behind the vent that fails ?

10

Omega Electrical and Audio Help / Re: Climate control won't maintain temperature

« on: 03 October 2010, 23:16:38 »

Mine behaves similar, didnt notice it too much in the summer, but in the winter it tends to just keep  heating up and up... . Not trying to hijack this thread but is there a sampling fan on the facelift that i can 'do ' the tissue paper test on ? 

11

Omega Electrical and Audio Help / Re: ' Switched live'

« on: 03 October 2010, 13:40:17 »

Thanks Phil I tried again and it does in fact unclick  quite easily from two retaining clips at the top . I found the unused wiring for electric rear seat heating which makes an easy place to connect to when an ignition live is requied. The gig lighter in the back was on ignition live in my previous Omega but in this one they have changed it to permanent live . .......... Now on ignition live . Job  done 

12

Omega Electrical and Audio Help / Re: ' Switched live'

« on: 30 September 2010, 17:18:37 »

Phil; can you expand a little on "pop this off".  Haven't spent too long trying so far but as yet I the method of releasing the blank with the cig lighter in the meddle eludes me .... clues please..... thanks

13

Omega Electrical and Audio Help / Re: ' Switched live'

« on: 29 September 2010, 15:42:28 »

So 'spot-on what I need '   Thanks Phil

14

Omega Electrical and Audio Help / Re: ' Switched live'

« on: 29 September 2010, 08:55:27 »

Thanks Phil. That sounds promising.  So I assume you are saying that even though your car didn't have heated rear seats ( like mine )  the connector is still there for the switch. .......... Where do I  look for the connector. cheers

15

Omega Electrical and Audio Help / ' Switched live'

« on: 28 September 2010, 23:01:10 »

What are the easy to find' and access locations of a switched live wire to take a feed from ?  Boot area preferred , but could be front of cabin.