Engine Whine

[dose48]

Alright, i know this is a common problem, ive done everything to fix it but still nothing works... what i have: pioneer 7500 dvd running 3 amps, 2x RF T3002 and 1- 1001bd, the only whine i get is from 1 RF t3002 which runs a set of MB Q Preimum 4" components and a set of PG 5.25" components.... my rca's are PG PlatinumSeries and run no where near the power or ground. i have regrounded everything in 3 doifferent spots, i have run a loop from bat-engine block- chasis on the neg bat terminal (this actually made it worse) and i have my tv and brain for tv grounded on the factory ground. everywire has also been shielded... any suggestions, it not the amps i checked those, so i beleive its the deck/tv... does anyone have a suggesion or am i correct to assume its an internal problem with the deck.........??????????

thanks for any feedback

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[androtaker 10+ year member]

2 suggestions

1) crutchfield has a alternator noise filter that installs between you alternator and that wiring for the car

1) replace the alternator

 

[Slody4Futbol 10+ year member]

try regrounding your radio to the battery... don't use factory ground... pioneers are notorious for this anyway... so don't be upset if you find out it really is your deck... but reground to metal chassis or run it straight 2 the battery and see if that works

 

[johnecon2001 5,000+ posts]

Brain units on that model go bad pretty commonly. You can pick up a used brain from a better model off of ebay.

 

[Alpineinstaller 10+ year member]

Move the RCAs away from the power wire....

 

[Lil Poot 5,000+ posts]

i've been having the same problem. im using an excessive amperage 200 amp alternator, and a kenwood excelon x979 deck. with my old grounds i got noise whether the engine was running or not. i redid them all, grounding my amps with a 4 gauge wire each to the same spot in the back by my seat belts. i redid all the underhood wiring in 4 gauge, on top of the stock wiring. i did battery negative to the front of one of my heads on the engine, and to the chassis. stripped the paint off all grounding points. the engine is also grounded to the chassis at the back of the opposite head.

now there is no noise at all with the engine off, but i get a lot of alternator whine with it running. how do i go about tracking down the problem?

 

[SSS 18734 5,000+ posts]

Try grounding the RCA's directly to the chassis of the deck. That solved my noise problem

 

[Lil Poot 5,000+ posts]

how do i do that, i think i have some female rca connectors around here, just plug those into the neg side, strip it and ground it to the chassis of the head unit? or is that what that third wire on some rca's is there for?

 

[squeak9798 5,000+ posts]

Move the RCAs away from the power wire....

That'd be a waste of time........

 

[squeak9798 5,000+ posts]

how do i do that, i think i have some female rca connectors around here, just plug those into the neg side, strip it and ground it to the chassis of the head unit? or is that what that third wire on some rca's is there for?

Wrap a wire around the outter barrel of the RCA connector and ground the other end of the wire.

But, it's more of a bandaid rather than an actual fix to the problem.

 

[Alpineinstaller 10+ year member]

That'd be a waste of time........

it helped when i had my other car with sh!tty RCAs

 

[Lil Poot 5,000+ posts]

i dont have a soldering iron, how do i attach the wire to the rca? just strip it back an inch or so, and use electrical tape?

 

[Chevyaudio 5,000+ posts]

Ground your RCA's like everyone said, I did it the other day, cleared up my whine.

 

[squeak9798 5,000+ posts]

i dont have a soldering iron, how do i attach the wire to the rca? just strip it back an inch or so, and use electrical tape?

Basically.

Just strip the wire so it's bare wire, and wrap it around the outter barrel of the RCA connector.

 

[jrz126 10+ year member]

Wrap a wire around the outter barrel of the RCA connector and ground the other end of the wire.
But, it's more of a bandaid rather than an actual fix to the problem.

How is it a bandaid? if that does fix the whine, then the problem is with the headunit itself, and the oly proper fix is to replace the whole thing or have it serviced.