strange voltage problem !!

[jaimster]

im running out of ideas and getting more gray hair on this one.
hey guys i got a 95 j30 was having battery draining issues . when we would start car no lights or other power such as windows.locks etc no power except for engine turning over
when step on gas them well get all power back on . even thought i could see lights flickering almost like voltage is fluctuating or something . so we replaced the battery and terminals both positive and negative good ones , alternator from junk yard good one thought tested, also i replaced all 3 drive belts real tight now belts were due for replacement . car has 200k miles however engine sounds pretty good still . unfortunetly im still having this power issue after all this work has been done
what am i not looking at or missing?

[yodawill2000]

Sure sounds like an alternator issue.
What voltage do you get at the battery when the engine is running ?

[jaimster]

checked it about 3 days ago .it was 12.60 engine running when i turned radio,ac lights wipers it goes down about 12.36
like i said replaced the alternator got it from ebay all 3 belts , new terminal got them form MCM electronics . took old alternator to autozone they tested it it is good.
could it be fuse box connections possitive connections to battery or any electronics conponents ???

[yodawill2000]

That's odd. It should be more like 15 volts when the engine is running.

[jaimster]

well im going to check the voltage tomorrow morning again. i dont think ive seen it close to 15 v though,
however this afternoon i openend the fuse box to check on the ground connections looking at the main 100 amps fusible link , i took the litle plastic cover off and bang!!1 link was broken at one end hard to see and notice it . its wierd power would come on when i step on the gas . probably voltage would go up enough arch andmake a connection across the broken link. i did replaced the 100 amps fusible link from nissan dealer about 6 bucks power issue solved . however i notice an erratic idle rpm running around 900 rpm too high think .

[driverdriver]

Aftermarket and non OEM alternators don't work well in these cars. This is a known issue. Always use a Nissan OEM or Nissan rebuilt unit.