pioneer whine

[sexy 10+ year member]

i picked up a pioneer deh-p3900mp off of my pile of old HUs this afternoon. i hooked it up turned it on played with it for a few then started the engine thats when it started that damm pioneer whine. i heard this many times from pioneer HUs. everybody claims pico fuses but if it were a fuss causing the whine why do they only do it with the engine runing? i pulled it back out because i dont want to rig the RCAs

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[adam71 5,000+ posts]

Why is it so many people have issues with whine on their decks.?? Are you using the factory ground or did you find a different location.?? I've owned a lot of Pioneer decks in the past 15 years and NEVER had a problem. Eclipse, Alpine and Denon head units have given me a lot of problems as far as this is concerned. What I did with those head units is ground them in the trunk in the same spot I grounded my amps and it always fixed the problem.

 

[sexy 10+ year member]

Fixed that pioneer whine chit real good tonight I took it out in my driveway put the face plate back on it then drove over it with my backhoe. I will never even think about owning another piece of pioneer junk cause it wont happen. Thanks pioneer.

 

[adam71 5,000+ posts]

Well, that'll show 'em huh?? You installed it wrong and now you get to go and buy a new head unit. Nice.

 

[sexy 10+ year member]

the only thing done wrong was done by pioneer ol buddy

 

[helotaxi 5,000+ posts]

When the pico fuses go, the signal ground isolation is gone. The whine is the ripple on the alternator coming across the signal cables. It only happens when the engine is running because it requires the alternator to be spinning to cause the ripple.

 

[sexy 10+ year member]

well since this such a comon problem with pioneer i was wondering if somone has tried a condencer or some other type of filter to fix pioneers junk?

 

[350zspl 10+ year member]

if you strip 8" of speaker wire 16 awg , take all the jacket off

then do a figure 8 around the rca outs in the back of the unit

then terminate the wire at a bolt in the back of the unit

the noise will go away

 

[RAM_Designs 5,000+ posts]

I had the same problem with my 880prs, as did tons of people...never had a single issue with any of my other HU's. I'm back to my 8053 and will keep using older Eclipse 8V units for as long as I can.

 

[dumple 5,000+ posts]

if you strip 8" of speaker wire 16 awg , take all the jacket off
then do a figure 8 around the rca outs in the back of the unit

then terminate the wire at a bolt in the back of the unit

the noise will go away

Like so

 

[350zspl 10+ year member]

^^^^what he posted does the trick

i prefer alpine, & eclipse to pioneer

 

[adam71 5,000+ posts]

I guess what I was referring to is that the only people I've heard of having problems with this are guys on this forum. I know 2 Pioneer installers 1 in MI and 1 in IN and they have never had a head unit come back that they or their customers have installed. I can't believe there are that many on here that can't install a head unit. I know there are guys on here that know what they're doing but you can't ignore there are also a lot of NOVICES on here that shouldn't be self-installing anything.

 

[ultimate157 5,000+ posts]

Like so

^ This.

Congrats, you wasted a perfectly good headunit for the cost of a couple inches of wire.

 

[sexy 10+ year member]

it was well worth it. I Should post some pics

 

[AllenH427 10+ year member]

Can I do that same figure 8 trick on my amp? Sorry to thread jack, but I switched amps and got the engine whine...