Changed Alternator, but still not charging??

There is probably a connection / relay the determines when the alternator is allowed to charge? For lower fuel consumption/ over run charging etc. you should have the major lead connected to the back of the alternator, but you will also need a deli supply ( start excitation of the alternator- used to be via the ignition light / switch in the old days)

I recon the alternator is not being commanded to charge by the cars electronics!
 
So 11.84v at the bulk head and battery both roughly the same? What about the out put from the alternator what is it reading?
DSC05276_zps4e665cc0.jpg
 
if it was me, i would not be looking at where cables go, if you say there is 0V direct at the alternator then that's fault found, even if you there is no lad on the alternator i would still expect 14V at the out going terminal of the alternator

its probably not possible, but if you could wire a 12V lamp direct to the alternator then that would prove for certain
 
dario said:
There is probably a connection / relay the determines when the alternator is allowed to charge? For lower fuel consumption/ over run charging etc. you should have the major lead connected to the back of the alternator, but you will also need a deli supply ( start excitation of the alternator- used to be via the ignition light / switch in the old days)

I recon the alternator is not being commanded to charge by the cars electronics!
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sounds very feasible, but would the alternator still not produce a DC supply?
 
check out this link about checking charging and bad connections using voltage drop !

http://www.youtube.com/watch?v=FTGz0PKIl84

he knows what he's talking about !
 
Its odd that your seeing 0v when the car is running at the B post of the alternator. You should at least see battery voltage,as that is what should be coming down the cable to the starter/alternator.

If the car is running and the voltage drops to 0v,and then then car is stopped running the voltage goes to battery voltage then you have either an internal short in the alternator or earth/wiring fault.

Does the alternator have 2 other wires in connector? If so,one for battery light,and other is 12v in...

You need to check all wiring,pins and connectors as it sounds to be like you havent connected something correctly,damaged connectors or have a bad chassis earth.
 
fixit man said:
check out this link about checking charging and bad connections using voltage drop !

http://www.youtube.com/watch?v=FTGz0PKIl84

he knows what he's talking about !
Click to expand...
Good video fixit man .....well delivered by Eric no BS :thumbsup:
 
in that vid, he talks about bypassing the ecu control of the alternator (full field test).
any idea how to do that on our car?
 
solved!

Based on toe-side's picture, I double checked the connector on the starter incase I had missed something.

I hadn't, but whilst looking, I did notice that one of the connectors wasn't sitting quite straight.
Took it off and it appears you need to put one cable on first, then the other.. there's a specific order.

once I spun these two around, tightened everything up again, and started him up, I am now getting 14.4v at the battery :thumbsup:


Thanks everyone - really... you don't know how down I've been these last few days over this.
 
Thats really great news :thumbsup:
Cars can be a pain and kick you in the balls when you least need it.
Come to think of it all internal combustion based equipment can be like this! :D
 
Tell me about it. Its been a stupidly expensive year (spent a total of about 15k on stuff i really didn't want to spend it on)

If this marks the end of my woes, at least the end of the year will be cheaper and far less stressful.

Thanks again guys.. Truely!
 
sk93 said:
solved!

Based on toe-side's picture, I double checked the connector on the starter incase I had missed something.

I hadn't, but whilst looking, I did notice that one of the connectors wasn't sitting quite straight.
Took it off and it appears you need to put one cable on first, then the other.. there's a specific order.

once I spun these two around, tightened everything up again, and started him up, I am now getting 14.4v at the battery :thumbsup:


Thanks everyone - really... you don't know how down I've been these last few days over this.
Click to expand...

:thumbsup: :driving:
 
sk93 said:
Thanks everyone - really... you don't know how down I've been these last few days over this.
Click to expand...


glad you sorted now, still i think you should upgrade to a coupe :)
 
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