10mins After Installing Alternator, Not Charging....

[Spyder1]

HEY GUYS,... i just want to say that i SEARCHED like a mad man. This is the first time i'm posting a thread about a problem, i always find an answer through searching first.

My OEM alternator died, i bought another one (autozone:/).. this one was good for weeks untill it started sucking the life outta the battery and not charging it.( after reading many forums, that's my conclusion). I replace that alternator with another one...after 10 mins of installation, the voltage was 14.5 then dropped to 11.2.

I"m thinking it could be a connector plug problem...but i did all the light test on the alter plug, and it passes! HOw can i test my ECU so that i know the voltage regulator is working..??!!?

 

[Mindslayer]

Test is with the voltage meter at the ECU. But, I'm think the belt isn't on tight enough.

 

[deerhunter0881]

voltage regulator is in the alternator, when you get a new alternator the voltage regulator should be fine. check all wires for grounds and crossion

 

[DSM AWD TSI]

If you haven't already checked, see if your PS fluid is leaking onto your alternator. If it is, that's probably what killed your first alternator and now this one too.

 

[southrneclipser]

check your alternator fuse

 

[AndrewD5418]

check your alternator fuse

I'd bet this is the problem.

 

[Spyder1]

1.Alternator fuse fine.
2.Belt very tight ( but not too tight)
3. No P.S. fluid leak at all...

What wires do i test on the ECU??
One more thing i notice... A WHINING NOISE FROM THE ALTERNATOR....when i UNPLUG the alter. connector it goes Away...when i plug it back in ..begins to WHINE..(???) I read in the forums that's means it's a bad alternator, but i just installed it 10mins ago...!

 

[slinarez25]

Some alternators are crap right out of the box. Take it back and get it tested/new one.

 

[Spyder1]

OKay i Went to autozone and just replace it with another one...(number 3) ....i'm curious to know if theres anything i should test on the ECU to make sure it's functioning well with the alternator...or is that just for the 1g's....?