alternator, voltage regulator, or relays?

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husamz
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alternator, voltage regulator, or relays?

Post by husamz »

I have been experiencing intermittent instances where my 1990 hatchback Si will not start without a jump. several readings have suggested that the alternator is not giving off a sufficient charge to the battery, but sometimes it starts okay anyway. I want to know whether I have to replace the alternator itself or how I can tell whether it's not just and adjunct part like the voltage regulator or relays?

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Sandman
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Re: alternator, voltage regulator, or relays?

Post by Sandman »

Measure the readout from the battery when the car is running. What you get will be a good indicator of what the alternator is like. A healthy alternator should be around 14v when the car is running.
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husamz
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Re: alternator, voltage regulator, or relays?

Post by husamz »

I have done this, and it varies. Once it read at 13.8, other times it came out slightly lower than 13. I just don't want to replace my alternator then later find out the problem was something else...

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el_jelly
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Re: alternator, voltage regulator, or relays?

Post by el_jelly »

Yes it can be the ELD...search around for the testing procedure.
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