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Popping noise heard through speakers by redromo
Started on: 05-04-2021 01:08 PM
Replies: 4 (56 views)
Last post by: fishsticks on 05-04-2021 05:37 PM
redromo
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Report this Post05-04-2021 01:08 PM Click Here to See the Profile for redromoClick Here to Email redromoSend a Private Message to redromoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Each time I step on the brakes I hear a little "pop" noise. The car is completely stock and nothing cut up or modified. Any recommendations or suggestions on what this is or how to diagnose it? ...is this common?
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CaptainHindsight
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Report this Post05-04-2021 02:46 PM Click Here to See the Profile for CaptainHindsightSend a Private Message to CaptainHindsightEdit/Delete MessageReply w/QuoteDirect Link to This Post
Power supply filter capacitors in the radio are getting old might be it. Does it also do it when the turn signals go on/off or the wipers? Every time there is a change in load on the power in the vehicle there will be some "noise" generated. Electrolytic capacitors lose capacitance as they age. It is what kills many cheap electronic devices as they age. You could try placing a capacitor across the power input to the radio and see if it goes away.

https://www.youtube.com/watch?v=NHVvkSbsr_Y

They are polarized so you have to be sure to put it across the power input with + to + and - to -. - is ground in the Fiero.
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fishsticks
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Report this Post05-04-2021 04:39 PM Click Here to See the Profile for fishsticksSend a Private Message to fishsticksEdit/Delete MessageReply w/QuoteDirect Link to This Post
There is a grounding point on the center console frame near the HVAC controls.

Stick your head down by the gas pedal and look behind the console. You'll see it.

There is also one tucked up in the passenger footwell towards the outside of the car, near the chime box.

Make sure they are both clean and tight.
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redromo
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Report this Post05-04-2021 04:59 PM Click Here to See the Profile for redromoClick Here to Email redromoSend a Private Message to redromoEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fishsticks:

There is a grounding point on the center console frame near the HVAC controls.

Stick your head down by the gas pedal and look behind the console. You'll see it.

There is also one tucked up in the passenger footwell towards the outside of the car, near the chime box.

Make sure they are both clean and tight.


I'll take a look tonight.

Where at in Washington are you?
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fishsticks
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Report this Post05-04-2021 05:37 PM Click Here to See the Profile for fishsticksSend a Private Message to fishsticksEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by redromo:


I'll take a look tonight.

Where at in Washington are you?


Castle Rock.
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