Very strange electrical happenings?!
Moderators: jifflemon, coyote1980, Rachel
- doingitsideways
- 480 Expert
- Posts: 659
- Joined: Wed May 02, 2012 8:55 pm
- Location: Manchester
Very strange electrical happenings?!
Right, so....
This evening I noticed the door ajar light on, but all doors and the boot closed properly.
Then notice the electric aerial not working, but turn the radio off and the light goes out.
No main beam flasher either, or front fogs
however, turn on the headlights and main beam, then operate the main beam flasher and all the other things work, even the electric aerial intermittently as I pull the flasher!
Very strange!!
Any ideas anyone??
As regulars to my VOC project threads will know, after the week I've just had, catastrophic electrical failure on the 480 really isn't what I need!!
Cheers,
Steve
This evening I noticed the door ajar light on, but all doors and the boot closed properly.
Then notice the electric aerial not working, but turn the radio off and the light goes out.
No main beam flasher either, or front fogs
however, turn on the headlights and main beam, then operate the main beam flasher and all the other things work, even the electric aerial intermittently as I pull the flasher!
Very strange!!
Any ideas anyone??
As regulars to my VOC project threads will know, after the week I've just had, catastrophic electrical failure on the 480 really isn't what I need!!
Cheers,
Steve
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!
Hammers can't fix a 480!!!
- Captain Slow
- 480 Expert
- Posts: 686
- Joined: Wed Jun 06, 2007 9:13 pm
- Location: St Andrews
Re: Very strange electrical happenings?!
Erm....stabs in the dark at earths, cem? but thats only because they are frequent candidates for any electrical abnormality!
And good luck with it. Haven't read VOC but assume you're having a dodgy old day
And good luck with it. Haven't read VOC but assume you're having a dodgy old day
Previously....
Whitney - 95 N White celebration No.449/480 now with Ladyforatey
Lula - 94 M Volvo 480GT Sold on...
Daphne - 95 M volvo 440si 1.8 73,000K (sold :()
Whitney - 95 N White celebration No.449/480 now with Ladyforatey
Lula - 94 M Volvo 480GT Sold on...
Daphne - 95 M volvo 440si 1.8 73,000K (sold :()
- AcidicDavey
- Can tell where the 480 was built
- Posts: 316
- Joined: Sun Mar 13, 2011 6:49 pm
- Location: Hereford, England
Re: Very strange electrical happenings?!
Some utter scumbags stole his 460 Turbo and completely destroyed it!
- glasgowjim
- 480 Is my middle name
- Posts: 4830
- Joined: Sun Oct 01, 2006 5:28 pm
- Location: GLASGOW SCOTLAND
Re: Very strange electrical happenings?!
check your battery for charge as a lowish voltage / charge will cause all sorts of strange electrical gremlins.
If battery ok then you work methodically through the cem functions and isolate the problem.
Stage 1 battery voltage check. + check all fuses.
Stage 3 check all earths
Stage 2 disconnect the battery for over 30 mins reconnect and see if the problem still remains.
Stage 4 check the connectors to the cem and that the relays in relay box are in socket firmly.
Stage 5 disconnect cem and run through the functions noting the ones which are cem dependant
now reconnect cem and run through these again. Keep the combinations simple to start with
Now post up results.
If battery ok then you work methodically through the cem functions and isolate the problem.
Stage 1 battery voltage check. + check all fuses.
Stage 3 check all earths
Stage 2 disconnect the battery for over 30 mins reconnect and see if the problem still remains.
Stage 4 check the connectors to the cem and that the relays in relay box are in socket firmly.
Stage 5 disconnect cem and run through the functions noting the ones which are cem dependant
now reconnect cem and run through these again. Keep the combinations simple to start with
Now post up results.
- doingitsideways
- 480 Expert
- Posts: 659
- Joined: Wed May 02, 2012 8:55 pm
- Location: Manchester
Re: Very strange electrical happenings?!
Tried the easiest thing first and disconnected the battery for a couple of hours, no change.
Will try the other things when I get a minute and report back
Steve
Will try the other things when I get a minute and report back
Steve
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!
Hammers can't fix a 480!!!
- Captain Slow
- 480 Expert
- Posts: 686
- Joined: Wed Jun 06, 2007 9:13 pm
- Location: St Andrews
Re: Very strange electrical happenings?!
Ah. I see. Sorry to hear that, that has to be one of the most rubbish things that could happen.AcidicDavey wrote:Some utter scumbags stole his 460 Turbo and completely destroyed it!
Previously....
Whitney - 95 N White celebration No.449/480 now with Ladyforatey
Lula - 94 M Volvo 480GT Sold on...
Daphne - 95 M volvo 440si 1.8 73,000K (sold :()
Whitney - 95 N White celebration No.449/480 now with Ladyforatey
Lula - 94 M Volvo 480GT Sold on...
Daphne - 95 M volvo 440si 1.8 73,000K (sold :()
- doingitsideways
- 480 Expert
- Posts: 659
- Joined: Wed May 02, 2012 8:55 pm
- Location: Manchester
Re: Very strange electrical happenings?!
Right, update time.
I've checked all earths I can see for continuity.
Pulled every single fuse and all ok.
Fitted a second hand CEM I got from Jim a while ago.
All to no avail.
So, shy of a two kiffed CEMs, I'm stumped!
Oh, yes some @rseholes did nick my 460, rally it around the local park while being chased by the park rangers, then leave it face down in a hedgerow after being airborne!
Got another though, so all things came good in the end
Although, there are only two 460 CD Turbos left... Now!
Steve
I've checked all earths I can see for continuity.
Pulled every single fuse and all ok.
Fitted a second hand CEM I got from Jim a while ago.
All to no avail.
So, shy of a two kiffed CEMs, I'm stumped!
Oh, yes some @rseholes did nick my 460, rally it around the local park while being chased by the park rangers, then leave it face down in a hedgerow after being airborne!
Got another though, so all things came good in the end
Although, there are only two 460 CD Turbos left... Now!
Steve
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!
Hammers can't fix a 480!!!
Re: Very strange electrical happenings?!
From your description, assuming its not the cem it does still sound like bad earths.
Turning your lights on completes a circuit and possibly provides the earth path for the circuit that has failed.
When you say "earths I could see" do you mean at the faulty item or where they connect to the body?
My apologies if you have already tried but preferably check the resistance between the faulty item and a good earth on the body, don't worry at tracing the exact earth point of each item for now.
With the battery disconnected you could use the neutral cable as the earth point for your multi meter.
Also try to disconnect any parallel paths. For example when testing the door open circuit, either disconnect the cable from the switch or make sure the switch is open.
Hope this helps, and good luck.
Regards
Regards
Turning your lights on completes a circuit and possibly provides the earth path for the circuit that has failed.
When you say "earths I could see" do you mean at the faulty item or where they connect to the body?
My apologies if you have already tried but preferably check the resistance between the faulty item and a good earth on the body, don't worry at tracing the exact earth point of each item for now.
With the battery disconnected you could use the neutral cable as the earth point for your multi meter.
Also try to disconnect any parallel paths. For example when testing the door open circuit, either disconnect the cable from the switch or make sure the switch is open.
Hope this helps, and good luck.
Regards
Regards