ford fusion hybrid

[redsox1]

I installed subs in my car but when the car goes from running off battery to starting the engine the sub has a continuous rumble until it switches back to battery mood, any ideas what this could be,

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[Popwarhomie 5,000+ posts]

Sounds like a ground issue.

 

[redsox1]

i did relocate ground and sanded for bare metal, it works fin while running off battery but as soon as it kicks the engine on the low rubble will stay on.

 

[Popwarhomie 5,000+ posts]

i did relocate ground and sanded for bare metal, it works fin while running off battery but as soon as it kicks the engine on the low rubble will stay on.

Do you get any alternator whine through the subwoofer or only the rumble?

 

[redsox1]

there is no whine just a continuous rubble the whole time while the car is running, i also re-ran all the wire to avoid any noise. i heard of the active noise sensors in the car but thought the lc2i would clear that out

 

[Popwarhomie 5,000+ posts]

there is no whine just a continuous rubble the whole time while the car is running, i also re-ran all the wire to avoid any noise. i heard of the active noise sensors in the car but thought the lc2i would clear that out

You don't have the factory Sony system do you?

Where is your LC2i ground?

 

[redsox1]

no its a se hybrid no equipped, i have a kicker amp and the lc2i ground is with the same ground of the amp to the metal frame in the trunk

 

[Popwarhomie 5,000+ posts]

Hmmm. I would probably try running a ground from the LC2i to the battery as a test. Just run a long ground wire outside directly to the battery. See if anything changes. Another thing to check would be your gains on the LC2i and the amp. Gain should be pretty low on the amp since the LC2i has up to 9.5 volt rca output.

 

[redsox1]

ok i will try to relcate the ground and i gains are off on the amp so i will check the lc2i thanks for the help i will update if anything changes