1989 420SEL Voltage Regulator Blowing

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1989 420SEL Voltage Regulator Blowing

09-07-2017, 09:50 AM

Cigar Havana Cigar Havana is offline

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Join Date: Jan 2003

Location: London Ontario Canada

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1989 420SEL Voltage Regulator Blowing

In a 1989 420SEL 320K KM, the voltage regulator on the alternator keeps blowing and consequently the battery is not being charged. Put in 2 new alternators in the last 2 months. Also a new starter 3 months ago. Blown the 3rd regulator now, which did not even last a day.

How to diagnose and find the problem?

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1989 420 SEL

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