I have a 97` Z71 4x4 w/350. Last Year the Alt went bad so I put a new
one in and a battery to.No big deal.The problem is everytime the motor
hits about 4200 rpms or so,the battery light comes on and the lights dim
very low and the volt gauge drops way down until it shifts.It didn`t do
I have changed the alt now 3 times from different places and still the
same thing happens. I have taken it to my shop and everything seems to
be charging fine.
I have checked all the wiring and the grounds to.
Possibly not, there could be some component using a high amount of current
when the motor is at 4500 rpm. I couldn't say what. Did they put a load test
on the alternator when they tested it? And did they run it up to 4500 rpm
when they check the charging system?
My girlfriends car was doing the exact same thing... We thought.
Turns out it was the low-coolant light the whole time. Not the
battery light. Doh.
Every time she'd accelerate hard, the coolant would be pulled
to the back of the tank, tripping the light.
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