Weird subwoofer problem

What's up guys, you've probably already heard a similar problem but i did research and still can't find a definitive answer. It's a pioneer avic-d3 head unit, Rocksford fosgate sub, amp and capacitor.

I'll just state that when the sub did work, it bumps.. Or thumps once whenever I turn the car on or off.

One day I hit a pothole and the sub stopped working, sometimes id hit another pothole and it would work until the next bump I would hit. Than for a little while it wouldn't work even when hitting bumps, but would work if I turned hard enough, it would work for the duration of the turn. Now it doesn't even do that, except for maybe a couple days ago it worked for an hour now doesn't. I'm completely clueless, my RCA's are fine. Wires have a secure connection, I don't know. I want to figure it out before I have to take it to a place.

it is a wiring issue, from the description. check all electrical system connections, battery/fuse holder/ground points, etc. Remote wire connections, pos & neg at amp, speaker connections at amp/speaker...check everything.

id check your wiring configuration as well,to make sure you are within the correct ohms value for the sub,and amplifier unity.As follows-
Subwoofer Wiring Diagrams

Follow mr.Quacks instructions,as well as checking your wiring configuration for your ohms stability for the sub and amp.Also i would get the electrical tested at your local Autozone/Orileys ect,as is is generally free to do so,then let us know what you have accomplished,and maybe we can help further.

and dump the cap!




quack!

The only time I had a thumping problem upon shutdown it was a ground problem. Needed a better ground on the hu.

Mine was doing the same thing in my Burb it needed a better ground.

alright well.. RCA's are fine. Ground is fine. Remote seems to be fine, currently checking into it further. This subwoofer itself is fine. Subwoofer wires to the HU are fine. AMP & CAP are fine. I.. Am.. Stumped.

Is the amp going off when the sound stops or is it staying on?

You could very well have a bad capacitor,,Id remove it, and rewire the power back up without it, and see what it does.Just me.