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EF V8 engine noise through rear speakers 

 

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 Post subject: EF V8 engine noise through rear speakers
Posted: Sat Jul 10, 2010 6:19 pm 
Oompa Loompa
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Ride: NL Fairlane Ghia 5Speed

Location: Adelaide
SA, Australia

1000W Streamline amp
1000W Pioneer sub
2 x 350W 6x9's on rear parcel shelf

need help guys? anyone?
i have a similar problem to the ba system
i have got my fuel pump and engine noise going thru my back speakers,its a high pitched noise and goes up and down with the revs..
ive got my RCA's on the passenger side with my trigger wire,and on the drivers side is the power cable for the amp

now someone told me theres a little capacitor on the coil but weve tested that many times,i think its just for the radio?

im not sure weve tried everything,i also hooked the amp up on a seperate battery outside the car and it never made that noise.
so im not sure what the f**k wrong with it,if anyone could help me id greatly appreciate it?

cheers guy
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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Sun Jul 11, 2010 1:38 pm 
Tyre Shredder
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u need whats called a ground loop icolator 90% of times that will fix it other wise its probly a internal problem with the amp

 

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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Sun Jul 11, 2010 5:13 pm 
Oompa Loompa
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so its basically the same principle as a sound compressor that links between you amp and your power cable?
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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Mon Jul 12, 2010 10:03 am 
Tyre Shredder
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no it goes in line with the rca's and gets rid of interferance

 

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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Mon Jul 12, 2010 11:11 am 
Getting Side Ways
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What headunit do you have what sort of rca's do you have move the trigger to the other side of the car , make sure there are no powered wires near the rca's

were the rca rolled up due to being to long
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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Mon Jul 12, 2010 8:50 pm 
Stock as a Rock
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Location: toowoomba
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80% of the time engine noise is found when there is a power wire of any sort near the rca's or speaker wire, and if you have a bad ground! what have you grounded to?
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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Fri Jul 16, 2010 10:16 pm 
Oompa Loompa
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Ride: NL Fairlane Ghia 5Speed

Location: Adelaide
SA, Australia

i have the earth bolted to the rear seat bolt and the power wire that came with the rca's is joined to the rca's but i have run a seperate one but its also running down the same side so it may be that?

my head unit is a pioneer,part number DEH-P6050UB
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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Sat Jul 17, 2010 9:01 pm 
Parts Gopher
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Try a new ground to bare metal.
Being a pioneer a common problem is blowing the little internal fuse by connecting RCA's while the head unit is turned on.
If this is the case it will need to be sent away for repairs or you can ground the RCA's at the rear of the head unit.
Not a perfect fix but it does the job if you dont want to send it away.

 

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 Post subject: Re: EF V8 engine noise through rear speakers
Posted: Mon Jul 19, 2010 1:34 am 
Oompa Loompa
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Ride: NL Fairlane Ghia 5Speed

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SA, Australia

its okay,found the problem,had the trigger wire near the RCA's and the power wire going to the amp was dodgy put another one in and is perfect now
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