Having problems with your 1993 Toyota 4Runner ?
4runner is overcharging...up to 17 volts at 2000 rpm
Check the voltmeter if its giving the right indication first or check the alternator power output as well as your cars AVR (auto voltage regulator).
Replace the alternator,this is from a voltage regulator problem,and have the battery checked out,if it has a short in it,or bad cell,it can cause this problem,but change the alternator.
Repair Help & Product Troubleshooting for 1993 Toyota 4Runner
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