Help!! Been dealing with this to long

[2020civicsi]

So in my 2020 civic si I have 2-12 kicker comp R and a decent amp to my knowledge. Every time I press the brake or press the gas pedal the subs like cut out and seem like they want to thump but the amp is going into protect when I press the brake or gas pedal (there electric pedals) but when I press my clutch pedal it’s perfectly fine I don’t get it. Someone pls help.

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[1aespinoza Premium Member]

Someone pls

A simple test is to run an RCA cable over the seats from the radio to the amp. This will tell you if the issue is noise picked up by your current RCA cables.

 

[Jimi77 Premium Member]

Everytime or just under heavy acceleration ad braking???

 

[2020civicsi]

Everytime or just under heavy acceleration ad braking???

It does it about medium acceleration and medium - light gas. It seems like when I give it gas or brake the car sends energy to the amp some how

 

[2020civicsi]

A simple test is to run an RCA cable over the seats from the radio to the amp. This will tell you if the issue is noise picked up by your current RCA cables.

My rca cable is connected to a line output converter wired to my factory sub

 

[1aespinoza Premium Member]

My rca cable is connected to a line output converter wired to my factory sub

Got it. Was the ground cable set on bare metal? Also check the positive connection points, such as battery terminal, fuse holder, fuse clamps, and terminal screws on the amp. They sometimes loosen with time and cause a energy deficiency. Also make sure the RCA cable is not coiled on top of other wires.

 

[Jimi77 Premium Member]

I suspect a bad connection, probably the amp's ground.

 

[winkychevelle 10+ year member]

What is your voltage doing when you hard accelerate or brake? The civic have a complex alt control that shuts the alt down to save fuel. Its possible that during those moments the alt is shutting down and the amp goes into low voltage protection.

At the same time like mentioned above I suspect a loose connection somewhere.