62 impala noise problem

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=78581
Printed Date: May 20, 2025 at 5:40 PM

Topic: 62 impala noise problem

Posted By: mobile1
Subject: 62 impala noise problem
Date Posted: June 01, 2006 at 7:36 PM

We have a 62 impala that we did some work to:

-changed head unit to aftermarket shaft radio to keep stock appearance

-took 4x10 in dash and put 2 4" in place

-replaced fact. 6.5" in rear seat

-installed mono amp and subs

-installed FM cd changer

The problem is an engine noise through the interior speakers. It doesn't sound like a typical alternator whine. Its more of a clicking sound that changes with the RPM's of the vehicle. I tried regrounding the deck, alternator and battery. the deck and the alternator both have less than 1ohm of resistance to the battery's ground terminal. The power wire is going to the ignition harnes along with the accy. The speakers are not grounding out either.

I think its the deck that is causing this problem, but I was curious if there is anything else I should try before officially blaming it on the deck.

Replies:

Posted By: pss5075104
Date Posted: June 01, 2006 at 7:39 PM

are your rca's and power ran beside each other?

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D

MECP First Class Certified Installer.

Nothing is impossable, it's just more expensive.

Posted By: mobile1
Date Posted: June 01, 2006 at 7:45 PM

only the subs are amped. the interiors are not and even with the rca's unplugged there is still noise.

Posted By: mobile1
Date Posted: June 03, 2006 at 11:57 PM

We wired up a pioneer DEH-p5800mp to the car and bingo, no noise. Now all I have to do is talk the customer into cutting the dash or losing the glove box.

Posted By: electrostatic
Date Posted: June 04, 2006 at 2:34 PM

what happens when you ground the rca cable shield/speaker negative wire?

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Prove your connections, use a meter!
I promise, I'll behave!

Posted By: duct tape
Date Posted: June 04, 2006 at 3:15 PM

try regrounding the motor of the car. i have seen many poor grounds on older cars like that.

Posted By: mobile1
Date Posted: June 05, 2006 at 9:39 PM

thanks to all that have suggestions, but you all need to read closer. RCA'S HAVE NOTHING TO DO WITH IT. THE INTERIORS ARE NOT AMPED AND THERE WAS NOISE WITH THE RCA'S UNPLUGGED. Like I said in my last post we wired up a new radio and that took the noise away.

DUCT TAPE: We tried to upgrade pretty much every wire in the car with no success, but thanks anyway

Bottom line, the customer is happy with his new deck no issues anymore.