Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: zirk on 10 June 2008, 19:05:35
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Some thing is killing my Battery (Omi 2.5 TD CDX Estate) and I’ve now run out of ideas, any help?
It started a few weeks ago, is intermittent and has done it 4 times now, always when you least prepared for it, If you park up and come back after a couple of hours the Battery would be totally dead (having got round the dead locking and opening the bonnet), the battery is down to 2 Volts!, jump start perfect, charge Battery still perfect until the next time.
This is what I’ve checked so far:
Checked Battery fully charged, fine 12.6 Volts off 13.9 Volts on. Changed Battery anyway.
Checked Alternator, fine, will fully charge a dead Battery in about ½ an hour.
Checked both cooling Fans, fine, both run ok and switch off as they should.
Checked alarm, not going off.
Checked and disconnected both interior lights.
Checked Radio not on.
Checked lights are not left on.
Left the Car alone for the last few days, and periodically checked, all ok, started late last night, on the button, this morning dead, cant even get in.
Obviously some thing is draining the when switched off?, but as I said I’ve run out of ideas!
Chris.
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I know the feeling :(
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I know the feeling :(
Yea, I did read your bit, but my TD not a FaceLift, in any case I cant see 700ma killing a fully charged Battery in a couple of hours.
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I know the feeling :(
Yea, I did read your bit, but my TD not a FaceLift, in any case I cant see 700ma killing a fully charged Battery in a couple of hours.
I agree, sorry I can't help :(
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the battery is down to 2 Volts!
A lead acid battery is dead at 10V... The chemistry is kaput and it wont charge back from there.
I suspect a poor ground connection is more likely. Where are you measuring the 2V?
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I know the feeling :(
Yea, I did read your bit, but my TD not a FaceLift, in any case I cant see 700ma killing a fully charged Battery in a couple of hours.
Pull the HRW relay, just in case. Seen a CDL motor do same thing as well.
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the battery is down to 2 Volts!
A lead acid battery is dead at 10V... The chemistry is kaput and it wont charge back from there.
I suspect a poor ground connection is more likely. Where are you measuring the 2V?
Ive replaced the Battery (thinking it might even be intermitant).
Im measuring the 2V (after the incident) across the Battery Lugs only and the Leads.
?
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your not parked near an airport?
I know that some radio key fob systems are on a similar frequency to the ATC at airports so when they transmit the car starts looking for the information.
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your not parked near an airport?
I know that some radio key fob systems are on a similar frequency to the ATC at airports so when they transmit the car starts looking for the information.
No, no Airport, dont have a Fob for the Car, Key only.
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Sounds like a sticking relay.
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I know the feeling :(
Yea, I did read your bit, but my TD not a FaceLift, in any case I cant see 700ma killing a fully charged Battery in a couple of hours.
Pull the HRW relay, just in case. Seen a CDL motor do same thing as well.
TB, I take it your refering to Heated Rear Window relay?
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yes
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I know the feeling :(
Yea, I did read your bit, but my TD not a FaceLift, in any case I cant see 700ma killing a fully charged Battery in a couple of hours.
Pull the HRW relay, just in case. Seen a CDL motor do same thing as well.
TB, I take it your refering to Heated Rear Window relay?
Doing it now, any more?
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Feel all the relays, are any of them warm?
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Hmm try this, look down the side of the battery and you will see 2 wiring connectors clipped to a bracket, lift them out of the way and you will see the brake pipes from the abs unit ,study this very carefully where the wires rest on it and check the wires for chaffing
found a few with this fault which eventually burns out the loom!!!
not saying it is the faut you ave but it maybe!!
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Try pulling selected fuses?
Maybe pull HRW fuse and any other non essentials and see if this cures it, then progressively replace them until the fault shows up again.
Obviously it's not lights, horn, wipers (though thinking on it could be a self parking issue with wipers - does it happen after the wipers have been in use?)
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Try pulling selected fuses?
Maybe pull HRW fuse and any other non essentials and see if this cures it, then progressively replace them until the fault shows up again.
Obviously it's not lights, horn, wipers (though thinking on it could be a self parking issue with wipers - does it happen after the wipers have been in use?)
Thanks will try the fuse thing, not sure if the wipers self park with the ing. off, but will look into it
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Hmm try this, look down the side of the battery and you will see 2 wiring connectors clipped to a bracket, lift them out of the way and you will see the brake pipes from the abs unit ,study this very carefully where the wires rest on it and check the wires for chaffing
found a few with this fault which eventually burns out the loom!!!
not saying it is the faut you ave but it maybe!!
Thanks will check 2morrow.
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Feel all the relays, are any of them warm?
will check if I can catch it when its happening next, Thanks.
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[/quote]
Pull the HRW relay, just in case. Seen a CDL motor do same thing as well.[/quote]
TB, Talk to me about the CDL motor, the reason I ask is I allways dead lock the car. when the Battery is flat I can not undead it (I know about turning the key really hard while holding the handle bit), but it will not un dead lock. end up having to pop the bonnet from underneath then jumping to unlock.
Is the CDL motor separate to Central locking motor, if its not letting me in, could this be a jammed motor draining the battery?
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This may be a red herring, but I had a Carlton once that flattened the battery every 2 hours, turned out to be a faulty ignition switch.
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I know the feeling :(
Yea, I did read your bit, but my TD not a FaceLift, in any case I cant see 700ma killing a fully charged Battery in a couple of hours.
Pull the HRW relay, just in case. Seen a CDL motor do same thing as well.
Seems that TB's done it again, Pulled the relay, and touch wood, hasn't happened since. well done TB.
Chris.
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:y
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Well it was fine for a few weeks after pulling the HRW relay (still out).
But over the last 24 hours its killed the Battery 3 times again.
Last night left the car about 2 hours, dead. Measured the Battery 1.5 V, dicounect 4.7 V, (dead battery).
Before I jumped it, I had a bit of a feel around the engine for posible causes (2.5TD), noticed the alloy top cover inlet side was quiet warm, thinking 'cars not run for a couple hours' so I touched the exhaust manifold, warm, but you can comfortable hold onto it, touched the top alloy cover exhaust side, Hot in fact too hot to touch for more than a few seconds!
Starting to think now 'Glow Plugs' (please tell me if Im going of the beaten track here).
Not knowing much about these engines, where are the Glow Plugs situated and what would cause them to switch on after the engines be switched off?
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Bugger!
I don't know this engine but typically the plugs will be on the cylinder head to preheat the cylinders.
If they are on they are high current and will knock the stuffing out of you battery very quickly.
Easiest way to isolate them might be to disconnect at the plugs (make sure you wrap up any bare ends to prevent a short.
I'd expect that in this weather the engine will start OK without the plugs connected, you'll maybe need to churn it a bit more on the starter.
Causes?
The plugs will be driven by a relay which could be sticking, there's also likely some control circuits (to control pre heat time) but I'd always suspect relay first.
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Ok just had a quick look for the GPlug relay in both boxes, No joy.
Anyone know the relay (or fuse) number for the Glow Plugs?