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[snowy]

can anyone help please.

The car stopped, wouldn't start, all electrics including starter and lights work except dash panel. AA replaced fuse 15, it went for 8 miles then blew again, then 100 yards, then 5 yards.

Can anyone tell me what fuse 15 supplies so that I can go through everything and check them one at a time.
Is a circuit diagram available anywhere.

thank you.

[addy]

here is a link to the owners manual. http://images.omegaowners.com/documents/UserGuides/OmegaOct2002.pdf

It shows fuses on page 186.

Fuse 15 =
CircuitRating  20 A
Reversing lamps,
level control system,
Vauxhall alarm system,
seat and mirror setting,
information display,
heated seats,
control indicators,
instruments,
instrument illumination,
windscreen wipers,
cooling fan,
headlamp range adjustment

good luck
Addy

[Agemo]

Doesn't say much for the AA, they should have located the circuit.

[KillerWatt]

Doesn't say much for the AA, they should have located the circuit.

Look at the fault description, it's an intermittent fault.

AA guy replaced the fuse.....the fuse held....ergo, the problem is solved.

Most of that list wouldn't have been in use if the OP was driving on a dry day, in "normal" (I use that term loosely) conditions, so it shouldn't take too long to find out what's tripping the fuse.

[Agemo]

I would not call it intermittent, it lasted for just 8 miles then blew again, then 100 yards, then 5 yards.
Or put another way, it may have blown as soon as the offending electrical item was switched on.

[rustym95]

sounds like a lose wire, have you seen any blue sparks under your seats, wire could be traped some were and sorting out.

[Weds]

Been there... Check out these 2 threads.

http://www.omegaowners.com/forum/YaBB.pl?num=1245933092/0

http://www.omegaowners.com/forum/YaBB.pl?num=1247420023/0

I've had the same problem, still not resolved. Since my problem with the fuse blowing in France its not happened again, the problem is so intermittent and random its proving a bit hard to pin down.

[Kevin Wood]

This fuse does sometimes cause trouble and it powers quite a few circuits.

My first thought would be to try unplugging the power sounder. IIRC, the ignition switched feed to that goes via this fuse, and they do tend to go wrong when the batteries leak.

Secondly, switch off everything on that list and run it up until the cooling fans come on to check that aren't killing it intermittently. (that circuit doesn't actually run the fans, only the control side of the fan relay system but it could be a duff relay).

Thirdly, go through each item in turn and switch it on, check it's working, and wiggle the switch and any wiring that's accessible to see if that kills it.

You might find something like this useful for actually monitoring the current while you're testing: http://www.maplin.co.uk/Module.aspx?ModuleNo=217881

Kevin

[Weds]

This fuse does sometimes cause trouble and it powers quite a few circuits.

My first thought would be to try unplugging the power sounder. IIRC, the ignition switched feed to that goes via this fuse, and they do tend to go wrong when the batteries leak.

Secondly, switch off everything on that list and run it up until the cooling fans come on to check that aren't killing it intermittently. (that circuit doesn't actually run the fans, only the control side of the fan relay system but it could be a duff relay).

Thirdly, go through each item in turn and switch it on, check it's working, and wiggle the switch and any wiring that's accessible to see if that kills it.

You might find something like this useful for actually monitoring the current while you're testing: http://www.maplin.co.uk/Module.aspx?ModuleNo=217881

Kevin

In my case it the fuse has never blown when the car is moving, (or when the engine has been started) only when stationary usually just after the ignition has been turned on. 

The other thing is the engine will carry on running when the fuse is pulled.

It never coincides with anything being turned on. Except the ignition. 

[Kevin Wood]

This fuse does sometimes cause trouble and it powers quite a few circuits.

My first thought would be to try unplugging the power sounder. IIRC, the ignition switched feed to that goes via this fuse, and they do tend to go wrong when the batteries leak.

Secondly, switch off everything on that list and run it up until the cooling fans come on to check that aren't killing it intermittently. (that circuit doesn't actually run the fans, only the control side of the fan relay system but it could be a duff relay).

Thirdly, go through each item in turn and switch it on, check it's working, and wiggle the switch and any wiring that's accessible to see if that kills it.

You might find something like this useful for actually monitoring the current while you're testing: http://www.maplin.co.uk/Module.aspx?ModuleNo=217881

Kevin

In my case it the fuse has never blown when the car is moving, (or when the engine has been started) only when stationary usually just after the ignition has been turned on. 

The other thing is the engine will carry on running when the fuse is pulled.

It never coincides with anything being turned on. Except the ignition. 

Have you tried pulling the self-levelling suspension relay? I wonder if the compressor sometimes siezes? It normally fires up a fee seconds after ignition on.

Then again, not sure if the compressor is fed from this fuse. :-/ Worth a check though.

Kevin

[Kevin Wood]

[movedhere] Omega General Help [move by] Kevin Wood.

[Weds]

Have you tried pulling the self-levelling suspension relay? I wonder if the compressor sometimes siezes? It normally fires up a fee seconds after ignition on.

Then again, not sure if the compressor is fed from this fuse. :-/ Worth a check though.

Kevin

That was one of the first things I tried, mainly because even though I have an Elite with an air compressor  the suspension has been changed to Bilstien shocks all round without the air shocks on the back. I used to notice the compressor kicking in shortly after the ignition was turned on. A bit pointless as there was nothing to pump up. So I pulled the relay.

[KillerWatt]

I would not call it intermittent, it lasted for just 8 miles then blew again, then 100 yards, then 5 yards.

8 miles, 8 yards...doesn't matter
If it isn't blowing the second it's replaced, then it's intermittent.

[Ding a Ling]

Come on fella's this problem has been 'around for ever' and we have the best people to 'crack it,' I've driven to Barcellona (2000+ miles in high temps) NO failure! and I've blown FOUR 35amp fuses in a day doing 60miles, D'oh!
I've changed (what I believe to be) "the Sounder" [Rubic's Cube speaker device found in Engine Bay cavity above drivers feet but under plastic heater air intake grill adjacent to wiper mech's]. I've also disconnected the A/C condenser fan (inside the rad adjacent to the Engine not the two outer one's).
There must be loads of people out there suffering from this and living on a diet of YELLOW FUSES, Grrrrrrrrrrr..........
This is an open challenge to shine for someone with technical digits ?
Ding a Ling
                                  

[Weds]

Come on fella's this problem has been 'around for ever' and we have the best people to 'crack it,' I've driven to Barcellona (2000+ miles in high temps) NO failure! and I've blown FOUR 35amp fuses in a day doing 60miles, D'oh!
I've changed (what I believe to be) "the Sounder" [Rubic's Cube speaker device found in Engine Bay cavity above drivers feet but under plastic heater air intake grill adjacent to wiper mech's]. I've also disconnected the A/C condenser fan (inside the rad adjacent to the Engine not the two outer one's).
There must be loads of people out there suffering from this and living on a diet of YELLOW FUSES, Grrrrrrrrrrr..........
This is an open challenge to shine for someone with technical digits ?
Ding a Ling
                                  

I think the only fellas that are going to crack this are the ones who have the problem, mine is so intermittent  that trying to pin it down will be very hard to do, my fuse 15 last blew in June in France when i did 6 in one day but none since, I suppose swapping bits of kit around might help but how long do you test it before claiming you've solved it 1 week, 1 month, 1 year ?, mine hasn't blown for 5 months. And before that I can't remember.

To summarise: My fuse usually blows when the ignition is first turned on without starting the engine. I have said before that its never gone whilst driving but thinking back it has gone when I've slowed/stopped in a car park and in a queue at the Seven bridge, brake applied and only moving very slowly. Never blown when at speed. Usually just replace the fuse and away you go.

I like to think I should be able to solve this, my working background is in Electrical/Instrumentation breakdown in the paper making industry. Electrical faults, wiring diagrams are second nature to me, but an intermittent  fault can be a nightmare to trace, especially ones that only happen once a year ! Much better for it to break properly.

At the moment my moneys on the alarm side.