Missing Fusible Link

[R.3.2.G.T.R]

here we go again..

been trying to hunt down whats stopping my battery from charging properly, battery is new and alternator replaced with a known working one

upon initial start i get 14v as per normal however if i drive around i can see my voltage dropping gradually with time

have checked for drain which was 0.04amps which is normal

alternator belt tension is fine

will a missing fusible link contribute to my issue??

is the an "exciter wire" that triggers the alternator to start charging the battery?

might have to end up striipng the loom back..

p.s fixed an earth point in the boot but no difference, will clean up the engine earth point tmrw

what else?

[Duncan]

It is normal to start charging high and drop volts to about 13.4 by the time it is warm. what are you seeing?

[R.3.2.G.T.R]

It is normal to start charging high and drop volts to about 13.4 by the time it is warm. what are you seeing?

if monitoring with pfc h/c on startup i get 14v or so (13v at apexi turbo timer), during the drive i get 12.4-12.6v at apexi turbo timer as it starts flashing

with car running my voltage should be between 13.8 - 14.8v.. i dont ever see 12.8v with car running

[Duncan]

I guess I am missing the point as usual

The PFC HC shows about 1v higher than the turbo timer? Have you put a multimeter across the battery terminals to confirm which one is right? If it is just the turbo timer reading lower it is probably just a wiring problem (power or earth) to the turbo timer

[R.3.2.G.T.R]

yeah multimter tests with car started shows 14v initially but once i start losing voltage, another check with the multimeters shows voltage below 13v, when i should be seeing close to 14v

will fusible link have any effect, my other option is to check all the wiring from starter / alt to battery

[Duncan]

nope, not the fuseable link, it is just a big fuse.

the light on the dash provides a little resistance and makes the alternator charge. this causes an issue if the globe is out, but I guess it isn't otherwise you would have mentioned.

how low does the multimeter show the voltage goes?

[R.3.2.G.T.R]

about 12.3v

[3LGODZILA]

0.02 is acceptable current draw not 0.04, but depending on the battery size and how often you drive the car this will vary.

sounds like the alternators on its way out, make sure the alternator is getting a good ground and also the positive cable is is good condition

[R.3.2.G.T.R]

ok plz ID what this plug runs to, starter motor or alternator

With it connected the drain is 0.04 and 0.02 disconnected

I'm guessing that not right

[Duncan]

I am pretty sure that is the main ignition power, ie everything is attached to it. Does it run from the extra clip in the battery via fusable link into the main loom?

[3LGODZILA]

most common cause of current draw in a factory system is the alternator, to rule this out unplug the connector going into the alternator and also the battery positive on the back of the alternator. but with such a small drain i doubt its the alternator id be more so looking into whats aftermarket.

stereo? turbo timer? boost controller? alarm? crap like that

[R.3.2.G.T.R]

nope, not the fuseable link, it is just a big fuse.

the light on the dash provides a little resistance and makes the alternator charge. this causes an issue if the globe is out, but I guess it isn't otherwise you would have mentioned.

how low does the multimeter show the voltage goes?

forgot bout this lil thread, problem is still there

can i ask, is the globe u mention part of the main cluster? ill be taking the dash apart tmrw to check the bulbs

[BOOZTJUNKEY]

Have u checked the main fuses in the engine bay ?

I had a similar issue and it was that one of the main ( engine) fuses had a crack in it and was draining the battery

I put a new battery and alternator in and all it was tha bloody fuse hahaha

[R.3.2.G.T.R]

Have u checked the main fuses in the engine bay ?

I had a similar issue and it was that one of the main ( engine) fuses had a crack in it and was draining the battery

I put a new battery and alternator in and all it was tha bloody fuse hahaha

thanks mate, will check that out asap, have a few spare ones that ill swap over

[t_revz]

forgot bout this lil thread, problem is still there

can i ask, is the globe u mention part of the main cluster? ill be taking the dash apart tmrw to check the bulbs

does the battery light come on with ignition before you start the car?

[R.3.2.G.T.R]

does the battery light come on with ignition before you start the car?

This is all I see before startup

[R.3.2.G.T.R]

strike that, I had left a wire un-connected while testing few things, it's normally connected and issue still there with battery light showing

Edited December 30, 2011 by BWRGTR

[R.3.2.G.T.R]

Have u checked the main fuses in the engine bay ?

I had a similar issue and it was that one of the main ( engine) fuses had a crack in it and was draining the battery

I put a new battery and alternator in and all it was tha bloody fuse hahaha

checked and replaced fuses, did a continuity test on the rest of the fuses in the cabin and engine bay but no improvement

took the car for 15min drive, upon startup im getting around 12.8-13.0v on the apexi turbo timer and after driving for 10mins or so with no other electrics on, its coming down to 12.6v

also checked the exciter wire for continuity from the alternator to the engine bay fuses box, no breaks

Edited December 30, 2011 by BWRGTR