So problem was in alternator, it didn't charge the battery. 12V when engine was working.

So I changed alternator. New one gave 13V, so it was changed again.
With new alternator it was about 13.7-14 V, but after I drove 20 kms it was 12V.

So alternator was changed 3rd time. And with this alternator it's stable 13.6-13.7 (with fully charged battery). Is it ok?

 

sounds like it.. what is with all the bad alternators?

 

we have shops in Ukraine that repair only starters and alternators.

I bought there new alternator and every change were covered by waranty.
But is it possible that 2 new alternator have problems with voltage regulator?

 

Make sure your alternator has a clean ground by cleaning up the mounting points, that could cause it to produce wierd voltages, mine was up to 15.5v before it burned itself up.

 

hmm, strange, sometimes I have 13.7V and sometimes 14.3 V. All accessories OFF.

 

well, since they're selling rebuilt ones, either they or the rebuilders SUCK at doing it.

if all accessories are off, then yes it should be above 13.5 volts. with a load it'll drop down to 11.5-12 volts.

sucks you had so many issues w/ 'em, but you seem to have a good workign alternator now fing02.gif

 

<div class='quotetop'>QUOTE (Sparticus @ Aug 25 2005, 06:20 PM)</div><div class='quotemain'>well, since they're selling rebuilt ones, either they or the rebuilders SUCK at doing it.
<div align='right'><{POST_SNAPBACK}></div></div>

I bought brand new one (MANDO). 2 of them were bad.

I was thinking the cause was in my car

alternator <- chairshot.gif -> me

 

^^^ How much did a brand new one run you??? The remanufactured one I bought cost about $250.