disco 1, 1996 300Tdi.
Alternator kicks out 13 and a bit Volts (and I know that is already low), but turn on air con, or even side lights and the volts (measured via a voltmeter that fits into cigar lighter from New Boat Gear - [I don't think there is much voltage drop from battery to cigar socket]) DECREASE a lot.
Firstly, aircon on, and side lights, maybe down to 12.1V, SO no charging to battery, turn anyhting else on and volts go below 12.
I think as revs increase, voltage actually DECREASES and that seems odd too.
Been like this for years and have fitted a socket in bumper for easy battery charging every night (at least during winter). It is a damn small battery for a 300Tdi, but the recommended one. I have heard of people fitting a second batt. in parallel to get over this.
But I want to run another battery for leisure purposes, not for cranking, via a voltage sensitive relay - long story - so I need to fix alternator problem (if it is a problem).
I did read somewhere but cannot find the website that on some alternators there was a bit at the back where some fiddling or replacing one part for another ups the output, but don't know if that was correct or applicable.
Any ideas where to start?
cheers
Alternator kicks out 13 and a bit Volts (and I know that is already low), but turn on air con, or even side lights and the volts (measured via a voltmeter that fits into cigar lighter from New Boat Gear - [I don't think there is much voltage drop from battery to cigar socket]) DECREASE a lot.
Firstly, aircon on, and side lights, maybe down to 12.1V, SO no charging to battery, turn anyhting else on and volts go below 12.
I think as revs increase, voltage actually DECREASES and that seems odd too.
Been like this for years and have fitted a socket in bumper for easy battery charging every night (at least during winter). It is a damn small battery for a 300Tdi, but the recommended one. I have heard of people fitting a second batt. in parallel to get over this.
But I want to run another battery for leisure purposes, not for cranking, via a voltage sensitive relay - long story - so I need to fix alternator problem (if it is a problem).
I did read somewhere but cannot find the website that on some alternators there was a bit at the back where some fiddling or replacing one part for another ups the output, but don't know if that was correct or applicable.
Any ideas where to start?
cheers
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