986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Radio switching off and on and lights flickering

Steve Tinker · 01-19-2013, 12:13 AM

Theres a good chance tht you voltage regulator (mounted inside your alternator) is breaking down under load and perhaps your battery charge rate is suffering too.

A simple test (with a multimeter) is to check your battery static voltage - it should be ~12.6v cold - then check the charge voltage @ +/- 1,500 rpm which should be 13.5 - 14.5 v.
This is just a general test because the alternator could be breaking down under load, in which case you need to conduct load tester to your alternator......

01-19-2013, 12:13 AM	#8
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	Theres a good chance tht you voltage regulator (mounted inside your alternator) is breaking down under load and perhaps your battery charge rate is suffering too. A simple test (with a multimeter) is to check your battery static voltage - it should be ~12.6v cold - then check the charge voltage @ +/- 1,500 rpm which should be 13.5 - 14.5 v. This is just a general test because the alternator could be breaking down under load, in which case you need to conduct load tester to your alternator...... __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.