924Board.org

[exd]

this topic has been here many times, but i coudn't find anything that would help me..

the batery in my 924 is charged just about 12,8 - 13,2V. I have the alternator checked and it is charging 14,2V. The regulator is new, now I bought a new battery and it didn't help eighter. The ground is good as well. What can be still wrong?

Weird thing is, that when it was charging less than 12V (before replacing the regulator) the charging battery light never turned on. It lights just when I turn the ignition on, but that's it...

Erik

(sorry for my bad english)
_________________
924, 1984, Europe version

[Martijnus]

mine charges at 13.2V max... The alternator has been rebuilt last year and the battery + wiring is new too.

Only think I can think of is the regulator. I've recently read about a replacement regulator which has a higher output.... could be my problem.

Don't know what's normal and what's not... but I'd like more output
_________________
"Rule: Turbo's make torque, and torque makes fun." (C. Bell)

924 "50-jahre", 1981.
MSII/extra, LPG, ITB's, 5lug.
To be turbo'ed in a while.
Killed her at the Nurburgring, Porscheless at the moment

[exd]

i see i'm not alone..

i was thinking if cound't be something wrong with the starter...

my alternator is also rebuilt and it was tested with a new regulator and it was giving 14,2V. but on the battery is just 13V. it's disappearing somewhere
_________________
924, 1984, Europe version

[Ozzie]

I gather you are bench testing the alternator at 14.2V?
On the car you will lose charging if the earth on the alternator is not good.
These are rubber mounted to the motor and need an earth strap or cable to the body of the alt and the motor or chassis.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

[exd]

[Ozzie]

What are you taking the readings with?
My car voltmeter only says 13V too but the multimeter says nearly 14V.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

[exd]

with a multimeter. the car voltmeter says about 12V when it is charging 13V..
_________________
924, 1984, Europe version

[morghen]

my 924s always charged and still do charge around 13.2 - 13.6

this is enough for the electrics it has..wich is none i'm kidding. the blue one has power mirrors and a stereo added to the standard...the red one has nothing but anyway...the battery never died and spins the engines as it did the first day i bought it two years ago.

when i turn on the lights the voltmeter drops to around 12V but that never scared me i think this is what they should charge.
_________________
Supercharger and EFI kits
https://www.the924.com

[exd]

in czech republic we have to drive with lights on all the time. when i turn them on it is garging just about 13V sometimes less. it's not enought. i was driving porsche for whole weekend and i am lucky i got home. now when i want to start it, it will not. the battery is dead.

i'm a little suspcicous that when the engine gets hot it's charging less than when i just start it.

i want to put a heated seats in the car, so i want to charge it properly..
_________________
924, 1984, Europe version

[Nobbi]

I think it is not a charging issue you have, if you read 13 Volts even with the lights on, that is just great! I guess you are loosing power somewhere, a stuck relais, some light that shines inside your trunk or in the glovecompartment.......Try to load your battery completly measure the voltage on the poles, let it sit for a day and re-measure.If you have a significant diffrence then your system is leaking somewhere.
try then the " Pull the fuses-on-by-one system". If that doesnt work check the relais and the attached fuses.
_________________
NA 924 - april/1977- 4-speed-audi gearbox.
500.000 km with fun.....and new toy:Porsche 944 S2 Cabriolet.Other car Daimler c-class cabby,brandnew..Plus : DEUTZ 4005 tractor Built 1967

[exd]

last night when i arrieved with the car home, i turned off the engine a tried to started again and it seemed like the battery is dead. today, the engine started... weird. with cold engine it was charging 13,5V and after an hour of driving just 12,3V.
I will try if it is "leaking" somehere as well, but it seems, it depends on the temperature of the engine.
is there any possibility, that the starter can cause the problem?
_________________
924, 1984, Europe version

[Nobbi]

Check that yellow cable wich is going from your battery to the starter and alternator.Check both ends for loose connection`s. remove dirt,dust and rust when you see it. Also good, cleaning of battery poles and cable `s connected to the battery. If you hear a clicking noise, thats the starter solenoid that is not getting enough power or is stuck because of to much heat applied to it. Missing starter-motor heat-shield ???
_________________
NA 924 - april/1977- 4-speed-audi gearbox.
500.000 km with fun.....and new toy:Porsche 944 S2 Cabriolet.Other car Daimler c-class cabby,brandnew..Plus : DEUTZ 4005 tractor Built 1967

[exd]

i'm not sure how the starter-motor heat-shield look like. i will look..
i will try to clean the cables on the starter. the other ones i have cleaned already.

thank you all for helping
_________________
924, 1984, Europe version

[morghen]

if the car starts when cold and does not when hot its time to rebuild the starter motor...replace solenoid and bushings...and replace the wiring with a new one. then 13.6 will be enough.
_________________
Supercharger and EFI kits
https://www.the924.com

[exd]

the starter maybe will need a rebuilt, but it shoudn't affect the charging, should it? it was charging just about 12,3V when the engine was hot..
_________________
924, 1984, Europe version