when entering interstate, as i punch it (WOT); at about 4,000rpm, the battery icon comes on to indicate a problem. battery only 2 months old, serpentine belt repl'd about 3 months ago--no apparent electrical problems. voltmeter stays at about 14 volts. only things left are the alternator and regulator--but again, no evident problem?

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1997 f150 xlt 4.6L 4x2 with: a/f one fipk, superchip, optima battery, bbk 75mm throttle body, edelbrock ias shocks--2001 lightning to come

[This message has been edited by LIGHTNINROD (edited 04-06-2001).]

 

How tight is the belt around the pulleys? Maybe the belt is slipping on the pulley because of a weak belt tensioner. Check this out.