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post #1 of (permalink) Old 09-12-2001, 01:41 PM Thread Starter
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engine noise interference on the radio?

there is a kind of popping noise that comes over the radio. it definitely changes with engine rpm. so i changed the condenser right by the coil (TR upgraded) that didn't help. so i bought an in-line condenser that hooks directly to the radio power supply, and then it seemed even worse. so i thought that the radio was just bad and figured i'd replace it, but last night i was listening to my walkman while driving and i could hear it there too. i never did that before so i don't know if it is normal, but i don't think that it should be. any suggestions?

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post #2 of (permalink) Old 09-12-2001, 01:45 PM
 
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Re: engine noise interference on the radio?

bargain spark plug wires can give you that noise. you might try the noise supressing wires.

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post #3 of (permalink) Old 09-12-2001, 01:51 PM Thread Starter
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Re: engine noise interference on the radio?

i bought the best 8mm wires they had at napa.....so i doubt it is them.

shawn

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post #4 of (permalink) Old 09-12-2001, 04:49 PM
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Re: engine noise interference on the radio?

Normally interferance with your radio is either a bad/loose ground to the radio or your power wire is too close to the speaker wires. If it's just a stereo with a couple speakers, no amplifier or anything, I would say check the ground. But, you're walkman gets interferance too? You are talking about a walkman that is in no way hooked to the Jeep right? If so then I haven't got a clue.
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post #5 of (permalink) Old 09-12-2001, 05:28 PM
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Re: engine noise interference on the radio?

Typically what people consider motor noise is the high pitched whine that fluctuates with motor rpm. These noises are usually (over 75% of the time) caused by a ground problem. Whether the problem be at the radio, antenna mount, vehicle ground plane, etc.
The other motor noise which mainly is noticeable with cassette tapes is a popping noise that fluctuates with rpm. This type of noise is normally caused by non-resistor plug wires, bad wire, ignition wires ran by radio (Ford trucks are notorious for this). This second type of noise is actually easier to troubleshoot by taking your walkman and listening to it while moving it around under the dash or under hood. When you get close to the source it will get louder. In my twelve plus years of doing custom install, noise problems are the most time consumign and most expensive, and almost always turned out to be ground problems in the system, vehicle or both.

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post #6 of (permalink) Old 09-13-2001, 01:56 PM Thread Starter
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Re: engine noise interference on the radio?

so now i stared to notice smoke coming from my stearing column. the turn signal switch hasn't worked correctly for months, so i don't know if that is the problem or not. also the volt meter is indicating between 14- 15 volts, it used to run around 13. don't know if this would be related or not.....

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shawn

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