Ls400rules Posted July 24, 2012 Share Posted July 24, 2012 I own a 92 lexus ls400. We just put a new altenator in it. But nothing is charging correctly. I have to rev it up past 4000 rpms just for the lights to dashboard to kick on, the radio isn't working. Let me know if you know anything. Quote Link to comment Share on other sites More sharing options...
landar Posted July 24, 2012 Share Posted July 24, 2012 I own a 92 lexus ls400. We just put a new altenator in it. But nothing is charging correctly. I have to rev it up past 4000 rpms just for the lights to dashboard to kick on, the radio isn't working. Let me know if you know anything. I know nuthing, nuthing atall.Seriously, you left a lot out of the story. Such as why you decided to change the alternator in the first place(PS pump leaking?). The main things to check and double-check...the belt is on and good tension, right? And all connections to the alternator are ok (clean, shiny, tight). Remember there is a rather large positive (+) wire to the alternator. And the alternator MUST be properly grounded. Check those carefully. Make sure that your battery connections are good. Now for the probing question: You did not, by any chance, forget to disconnect the battery before pulling the alternator and saw some sparks, did you? BTW, welcome to the forum! Quote Link to comment Share on other sites More sharing options...
steve2006 Posted July 24, 2012 Share Posted July 24, 2012 Oh no not that easy to get to 80 amp fuse problem caused by those sparks! Quote Link to comment Share on other sites More sharing options...
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