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[andy_driver]

well got a good second hand alternator for my 2.5 v6 put it on light went out but . short while later light came back on then drove it went out . then came back on arghhh . but put meter on it showing chargeing at 13.8 v while running . but i think my drive belt has strecth and worn thats what the haynes manual says could happen aswell cuase the light to come on .   

anybody any other ideas . thanks

[Lazydocker]

Check all the earths too, it's a common fault on V6's

Doest the battery negative lead get hot?

[andy_driver]

oh ok didnt know it was . havnt notice the earth getting hot but i will check that . in saying that the earth to the battery the outer casing of the earth cable is craked thow near the battery

[Lazydocker]

Yep... Not sure it's your problem though as it normally just makes the light glow dimly (like mine is )

[andy_driver]

ah ok mine glows bright as it can go . am still thinking thow my drive belt is strecthing as causing belt to slip but no noise thow from the belt .

[markspark]

if your belt is slipping how did you get the 13.8v reading
i would check all conections see if one hase rusted off somewhere

[Abiton]

Read and follow testing procedures:

http://www.omegaowners.com/forum/YaBB.pl?num=1225724099

 

[tidla]

strange one.

usually the light is on, or off.

generally the dash warning light is "earthed" thru the alternator and does the job of "exciting" the alternator.

once running back feed from the alt knocks the light off.

to have off, on. i would say this wire is rubbed thro and earthing occasionally with engine movement.

[mic_k]

Check all the earths too, it's a common fault on V6's

Doest the battery negative lead get hot?

pardon me but what it indicates if it does? My negative terminal is actually melted to the "battery coat" :-/

[Lazydocker]

Check all the earths too, it's a common fault on V6's

Doest the battery negative lead get hot?

pardon me but what it indicates if it does? My negative terminal is actually melted to the "battery coat" :-/

You need to clean the earth points

[Mr Skrunts]

Dont know if the Omega and Carlton have the same setup.

On my Carlton there was a sinsile small wire off the back of the alternator (as well as the thicker wires) this had a spade connector on it and the wire started to braek near the spade connector.  Maybe worth checking.

[andy_driver]

strange one.

usually the light is on, or off.

generally the dash warning light is "earthed" thru the alternator and does the job of "exciting" the alternator.

once running back feed from the alt knocks the light off.

to have off, on. i would say this wire is rubbed thro and earthing occasionally with engine movement.

think i will look at my loom cuase it is from 1996 lol there is wire showing in places lol and some oil has got to it at the alternator side of the engine

[andy_driver]

thanks for all the ideas will check all of them 

[andy_driver]

finally i found the problem with the battery light staying on then off then on again . it turned out to be the warning light battery wire . has rub or bared through against the body or something . which in turn cuased to blow the aleternator regulator and diodes aswell . so just got mine alternator recondition a second time lol the spark put a bypass wire in so the alternator would get swicth on . all in its cost £125 later yayyy lol . oh the spark used a live ignition feed from a plug underneath my water expansion tank .

[Mr Skrunts]

finally i found the problem with the battery light staying on then off then on again . it turned out to be the warning light battery wire . has rub or bared through against the body or something . which in turn cuased to blow the aleternator regulator and diodes aswell . so just got mine alternator recondition a second time lol the spark put a bypass wire in so the alternator would get swicth on . all in its cost £125 later yayyy lol . oh the spark used a live ignition feed from a plug underneath my water expansion tank .

Dont know if the Omega and Carlton have the same setup.

On my Carlton there was a sinsile small wire off the back of the alternator (as well as the thicker wires) this had a spade connector on it and the wire started to braek near the spade connector.  Maybe worth checking.