15v too high?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=90937
Printed Date: May 13, 2025 at 6:50 PM

Topic: 15v too high?

Posted By: zboggs
Subject: 15v too high?
Date Posted: February 24, 2007 at 6:29 PM

Hi, I recently put a JVC receiver in a toyota previa van for a friend. It worked for a few minutes, then immediately started making a groaning noise through the speakers (only while the engine is running) and died shortly.

I have a new receiver but I'm scared to put it in. It was wired correcly, BUT I'm measuring about 14.95volts out of the yellow and about 14.50 volts out of the red power wire. I have a good body ground.

We suspected the voltage regulator since it also blows dome lights out, but a shop tested it and wouldn't put one on becuase they said it was fine.

Replies:

Posted By: jpn5imp1
Date Posted: February 24, 2007 at 9:12 PM

i am not familiar with foreign but i think american cars puts out 13 .8 volts max

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jim

Posted By: aznboi3644
Date Posted: February 25, 2007 at 4:50 AM

jpn5imp1 wrote:

i am not familiar with foreign but i think american cars puts out 13 .8 volts max

Standard for pretty much all cars is 14.4 volts.

13.8 volts is more realistic though

Posted By: ringojam
Date Posted: February 25, 2007 at 10:47 AM

Voltage tooooo high change the regulator in the altenator posted_image

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Jamaica home of the worlds fastest man.

Posted By: splaudio
Date Posted: February 25, 2007 at 6:57 PM

test the truck after it warms up 15v is fine on a cold start up.