         
1998 Toyota Avalon 5.0L 02 sensors heater circuits were drawing enough amperage to cause the alternator output to be 40 amps at idle. 1993 Toyota Corolla 1.6L Check IC2 connector located under the ashtray. Accumulation of moisture, corrosion, and green algae causes a variety of problems in the starting system. 1984-1989 Toyota Van Early alternator failure can be caused by road debris or water coming in contact with the alternator. Toyota part number 27029-73020 is a shield to protect the alternator. Source IATN 
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