Engine whine and ground loop fixes... take two

[ReDemoN 10+ year member]

Can you do this trick with the pioneer Tv's

There rca's are not in the frame of the unit.

The unit is in a 98 chevy Z71.

And it has a whine when the vehicle is off and then whines when its on.

Has two grounds running to the radio, and a good ground to the amp.

What do ya'll think could be the issue?

Please help...

 

[ReDemoN 10+ year member]

Well we tried it, and it worked.

So this pioneer trick will work on units with the external rca inputs.

 

[Cheek16]

Nice //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[freythman]

Had alternator whine after new install. Tried everything.... Wrapping the RCA outs worked for me...

 

[AlterEgo99 5,000+ posts]

Had alternator whine after new install. Tried everything.... Wrapping the RCA outs worked for me...

Panasonic HU?

 

[binclintonusa]

I really hope you like this new challenge! Best of luck, everyone!

pret auto

 

[sparkplug121988 10+ year member]

Ok I am running a kenwood ddx 812. I am not getting a whine but I am getting buzzing out the unit. I really hear it loud and clear when I turn the unit up and pause the song/dvd/ipod. Im using a memphis 300/4 for my front and rears. I have replaced the grounds on the hu and the amp. Also swaped the rca's and still nothing. Then I tried grounding the rca's to the hu but it got worse! What else can I try? Maybe a ground loop isolator will that working. I dont think this is a ground problem but I might be wrong.

 

[JEXTEL 10+ year member]

i jus got horrible whine from setting at a stop light!!! i cant wait to try these tricks out in the AM

 

[hellabent]

Dont know if this is a ground loop or not but... I have a pioneer h/u, 2 punch 800s, and a cap. I recently had to change my fuse and fuse holder under the hood due to it melting together. So I replaced it and now when I turn the system on and off it has a loud popping and i can hear a high pitched noise. Then once I crank the engine it has a very loud engine noise. I have checked all grounds and all are bolted to thick metal. This only happens when i have the rcas from the head unit plugged into the amps. I can take an ipod and plug it into the amp for mids and highs and it works fine. Every thing was working fine untill i changed the Fuse holder......Any help would be great as ive been going around and around with this problem.

 

[Shouse94 10+ year member]

Has anyone grounded the RCA's to the H/U chasis on a headunit other than Pioneer? I just did this to my Kenwood tonight after my RCA grounds popping after 3 days. Is this safe to do to a Kenwood?

It also doesn't matter how you wrap them (each one separate, Left channel separate, right channel separate) correct? Just wrap them and ground them?

 

[Shouse94 10+ year member]

Ok I am running a kenwood ddx 812. I am not getting a whine but I am getting buzzing out the unit. I really hear it loud and clear when I turn the unit up and pause the song/dvd/ipod. Im using a memphis 300/4 for my front and rears. I have replaced the grounds on the hu and the amp. Also swaped the rca's and still nothing. Then I tried grounding the rca's to the hu but it got worse! What else can I try? Maybe a ground loop isolator will that working. I dont think this is a ground problem but I might be wrong.

Sounds like you need to call Kenwood tech support. Your H/U probably needs repairing.

 

[BLD 25 10+ year member]

thanks! I just bought an 860mp and it had a terrible whine. I grounded one set of RCAs and it is way better. Thanks!

 

[jerseymike68 10+ year member]

I have the Magnaflow too and love it, my brother got his used from craigslist but I wanted a valid warranty so I got it here. Magnaflow Exhaust 16974, or you can try one of the sponsors here on the forum, they are allways having sales/specials. Either way its a great exhaust system, sounds great, and very easy to install.

 

[AlterEgo99 5,000+ posts]

Has anyone grounded the RCA's to the H/U chasis on a headunit other than Pioneer? I just did this to my Kenwood tonight after my RCA grounds popping after 3 days. Is this safe to do to a Kenwood?It also doesn't matter how you wrap them (each one separate, Left channel separate, right channel separate) correct? Just wrap them and ground them?

Did this work on your Kenwood? Update please!

 

[jerseymike68 10+ year member]

I have the same magnaflow too and love it, you can usually get a used one on ebay or cragislist. I wanted a valid warranty so I got it here. Magnaflow 16974. Also some of the forum sponsors usually have a sale going on. Either way its a great exhaust system, sounds great, and very easy to install.

 

[AlterEgo99 5,000+ posts]

Did this work on your Kenwood? Update please!

Bump...I'm curious if anyone has attempted grounding the RCA's as suggested in this thread on a non-Panasonic HU? Anyone????

 

[The HACKER 10+ year member]

This thread has convinced me pioneer *****... //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[JuicyJeff 10+ year member]

NAIICE. I been having some trouble too. Just moved my grounds and to bare chassis so its not those. I may try and reground my headunit to a bolt I found out today that It is either the rcas or the headunit at this point. As there is no alternator noise until the rcas are connected into my speaker amp. And as for grounding the rcas, i haven't heard of anyone with problems with a clarion headunit, and my last headunit (Sony) Also had the same problem with the whine

 

[JuicyJeff 10+ year member]

Dont know if this is a ground loop or not but... I have a pioneer h/u, 2 punch 800s, and a cap. I recently had to change my fuse and fuse holder under the hood due to it melting together. So I replaced it and now when I turn the system on and off it has a loud popping and i can hear a high pitched noise. Then once I crank the engine it has a very loud engine noise. I have checked all grounds and all are bolted to thick metal. This only happens when i have the rcas from the head unit plugged into the amps. I can take an ipod and plug it into the amp for mids and highs and it works fine. Every thing was working fine untill i changed the Fuse holder......Any help would be great as ive been going around and around with this problem.

The amp has a quiet shutoff function built into the amp. Which means that it holds some energy or something in it so that when it shuts down it doesn't make that pop noise and what i would think is it releasing all the leftover power at once. What you may have done is fried this when you had your meltdown or whatever. As of now, there is no way to fix this. You can A) Get the amp repaired B) Buy a new one or C) Live with it.

 

[JDMB20TDA 10+ year member]

dehp7500mp Fixed!

awesome.