Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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FLOWERPANDAH
MEMBER
2 POSTS
not a 4runner.
Jan 11, 2011 at 10:43 PM
RASMATAZ
AUTOMOTIVE REPAIR CONTRIBUTOR
75,992 POSTS
Use a voltmeter and read the battery voltage before you start the truck -should be 12.4 volts or higher-Now start it up and read it again while running-the readings should be 13.5 to 15.5 volts if not the alternator is no good