Omega Owners Forum
Omega Help Area => Omega Electrical and Audio Help => Topic started by: Muroman on 18 December 2018, 10:53:24
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Hey,
it seems that my Omega likes Christmas a bit too much :-\
Month ago started to notice the alternator light illuminating very dimly, voltage 14,4.
Week ago started to notice the hazard flash button started to blink with the indicator, voltage 14,2.
Now today seat heater, rear window heater and that red light(alarm button) started to illuminate dimly too, voltage 14.
My local battery seller can order me 100A or 120A alternator and told to check which one is it (I would need to take it to hand before seeing which one is it....), is there possibility that the alternator can be either one? I believe it is 120A?
And also could the problem be elsewhere?
Car is 1999, X30XE.
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Most places that sell batteries will do a free drop test. Start here. With regards the alternator, there is no real physical difference, so I'd go for the bigger one unless it's vastly more expensive.
After that it could be multiple issues, but I would check the earth wires.
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From memory, the 120A where only fitted to Plod flavors.
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From memory, the 120A where only fitted to Plod flavors.
Out of interest, which ones got the 140amp? I know I've had those in the Vectra's I've owned, but my memory of the Omega ones are hazy.
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14V output is still reasonable given the loads you've got turned on.
I would probably be looking elsewhere, such as a faulty ground connection somewhere, before condemning the alternator.
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Could it be that if your car was built for cold climates, it would have a higher rated one :-\
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I too doubt that it's the alternator. More like a bad earth. But where?
Is it a saloon? If so, check that all the lights at the rear are working as expected and inspect the wiring loom by the hinge that connects the body to the boot lid. Opening/closing the boot repeatedly flexes the loom and eventually one or more of the wires break and causes funnies.
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This goes for next year project list as I can't find time just now, happily Omega will be in warm garage waiting for love :y
I fixed those wirings from back in March, but surely can't say for 100% that they are still ok. -> https://www.omegaowners.com/forum/index.php?topic=140951 (https://www.omegaowners.com/forum/index.php?topic=140951)
I'll get back to you after checking those wires from back and battery ground.
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Changed the alternator, old was Bosch 120A and new was re-manufactured by Elstock, there were no other brand or specification markings.
Haven't tried before but I tried now to put all the electrics on and it showed 14.1 volts. Idle just headlamps on 14.4 volts. Sounds normal?
No funny illuminating anywhere anymore.
It took 2 hours, it was very fast, right? ;D
Edit 1. Also the battery was checked before changing the alternator and it showed some value "490" mechanic said that it could be near "600". Can't tell what that value means. But no need for new battery yet.
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Sounds fine to me. :y