Because it's stock. (It's crap!) replace it with a good one.
make sure that speaker wires are not touching at all, this causes stereo to cut off
No, just the intake manifold.
it is caused by the alternator voltage regulator switching on and off to charge the battery, this problem is encountered on many makes of car, you may not of noticed it before prior to exchanging the battery.
Has it always been like this or not? If it is, then it is not really a problem. It is how the stereo was installed. An stereo can be installed to be turned on whether the engine is on or off. If the stereo cannot be turned off at all, then you have a problem with your stereo.
pull hvac knobs off,pop a/c vents out,remove 2 screws,pop off trim plate,remove radio screws
The center button, beneath the radio. In a 2005 PT Cruiser
Get down under the stereo. You should see screws angled up towards the stereo. If not you have one of those panels that just pops off. SCrewdriver should work. And I mean the drink not the tool.
Low refrigerant is most likely.Low refrigerant is most likely.
The first thing that comes to mind is a blown speaker. The next to check is a crossed wires- positive on ground or visa versa. Or the last a loose ground wire on the stereo.
To remove the stereo off of a 1999 Honda Civic loosen all of the mounting screws for the center console. Pull out the console is loosen the stereo mounting screws. With everything off pull the stereo and unplug the radio.
You might actually have to get up off the couch and walk over to the stereo and press the mute button.
The stereo light should not go out. It should get dimmer though. They assume that if your headlights are on, it is dark outside and you don't need as much light to read the radio display as you would in bright light.