Question about Pioneer DEH-P6800MP CD Player

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I am getting an engine sound when in use with amp

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You may have a bad ground to the rca's, try running a wire from ground to the rca shield. if it is a bad ground to the rcas, the noise should go away.if you are good at soldering, should be able to just solder a wire to the rca shield.

Posted on May 04, 2010


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Getting humming sound from amp, replaced rca cables, made sure the ground was clean, tried friends amp also. Pioneer 700bt. Any suggestions?

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I have a 1994 Subaru Legacy and It has started making a "knocking sound". Cked the oil, it was OK

knocks when cold ( Start ), then sort of diminish or disappears when warming up ???

Knocking goes faster when accelerating when cold ???

If Yes, then Piston knocking on the wall of the cylinder . The sound disappears as the engine is getting warmer it dilates and the gap gets smaller.

If this just started,

1. Put quality oil & filter ( Mobile Full Synthetic Oil & Mobile Oil Filter or Purolator )

2. Do not put cleaning agents mixed with oil.

3. Personaly i've put "Restore" Engine Restorer & Lubricant in cars with more then 200 000 km and the results are amazing. But only "Restore". My Volvo is at close to 300 000 km, and it runs great. It's not a cleaning agent.

By experience if the knocking just started you can put an easy extra 100 000 km on the engine before a rebuilt. Quality Oil & let the engine warm up ( 3 mins ).

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Speakers dropping out & engine sounds

sounds like your amp is bad

remove the amp and hook your speakers directly to the radio if the problem stops
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if you got another radio try the amp with that radio to "double" check that it is the amp

if the problem is still there with the speakers hooked to the radio then you need to fix or get another radio

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