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Power surge blowing fuses on amp when car is turned on.

I have a 2001 Oldsmobile Aurora with a stereo system. Not every time...but occassionally when I would start the car there would be what seems to me a ''surge'' of power to the amp. At first the subs would just make a few loud booms and then stop and work fine, after a while they ended up blowing. Then it just started to blow the fuse in the amp as soon as I would start the car. I have the correct fuses, a good ground. The power wire is wired through a digital capacitor before the amp and it reads at about 14. I took the stereo out for a while and just recently ran the wires again and hooked up an amp to it and it seemed to do fine, but I'm afraid to hook up subs to it for fear that they will blow. Any advice on why this may be happening?

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The voltage regulator in the alternator or the capacitor is malfunctioning. get a multimeter on the battery when u start the car (before the capacitor) if it reads a large surge (something greater than 14 or 15 volts) then u may need a new amp, if not, then test it on the back end of capacitor to the chassie negative, see if u detect spike there.

Posted on Nov 28, 2008

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