techrep

iTrader: (1)

Sounds like a bad voltage regulator in the new alt.. take it back and have the battery checked like Redfish said.

Walshy569

thanks guys for all the help ill definitely will try to get a new battery with in the next month or so and when i get time ill test it before getting one. school is just eating up all my time. is there a way to test the alternator at home?

gmb13

Sure, I can bring my $1000 battery/starter/alternator tester home and check my truck in the driveway!

I agree, have the battery load tested first.

Walshy569

Alright guys so i replaced the battery last night and also cleaned the terminals. also the whining noise i thought was the alternator was the tensioner pulley so i fixed that. the headlights dont flash anymore but the dash lights still pulse under acceleration. i can also hear a loud spinning/grinding noise under the hood followed by a click on the passenger side and it goes away but the lights still pulse and the noise goes on and off. any thoughts???