cd player cuts out when reversing

[StockoVRWagz]

did a bit of a search but couldnt find exactly what problem i have.
when i reverse, my stereo turns off for 1 or 2 seconds then comes back on, as if nothing happened. its all wired up and mounted properly. i had a look to see if any wires were earthing out or anything like that but none were. Ive taken it out maybe 3 times and re-did all the wiring and all that kind of stuff incase i stuffed up somewhere, but it still does it. its weird that it only does it when im reversing.
cheers

[holdenboy]

Thats a weird one, it would have to be a power/earth wire that is wired wrong. Maybe try disconnecting the earth wire and remounting the unit (it will earth through the mounting brackets) and try her in reverse.
I'd also check the acc and constant power wires, grab a multimeter and make sure theres enough power (10.5v - 14.4v) while its in reverse at both wires.

[StockoVRWagz]

I just got back from shopping anddriving forward out of the carpark space whilst turning it cut out again. it seems to be forward/reverse whilst turning.

[StoneX]

If it's caused by momentum, it will most likely be a poor connection somewhere. Doesn't have to be your wiring, could be anywhere in the dash, but is more likely to be any aftermarket changes that have been made.

[StockoVRWagz]

thanks, ill have a look. could it be bad connection to accessory power? when it turns off i dont lose any settings in the deck

[holdenboy]

How did you make your connections to the aftermarket unit?

[StoneX]

thanks, ill have a look. could it be bad connection to accessory power? when it turns off i dont lose any settings in the deck

Yep, that is very likely. If it was constant power or ground, you'd lose your settings on most units (some have memory for a while after, most don't).

[StockoVRWagz]

How did you make your connections to the aftermarket unit?

I soldered and taped all the connections.

Also would this have to do with my sub cutting out whilst playing bassy songs? Have a new battery and have had power drain problems on and off for over a year now. Every auto elec I take it to say that theres nothing wrong and stop wasting their time.

Please dont say faulty deck

Deck is a Sony CDX-GT450S. Ive never really been a fan of Sony, but this was on sale like $100 or so off lol

[StoneX]

Sub cutting out on bassy songs can be all sorts of things... Amp protection can cut it out due to different problems. Voltage drop can cause it to cut out due to excess current draw, poor grounding, insufficient gauge wire, etc.

You might even have a dry solder joint on the main power connector of the head unit...

[StockoVRWagz]

I recon its exessive currant draw, would that cause the deck to power off momentarily. It only happens to the sub amp which is 250w (or 350w cant remember) powering 1000w sub and the amp for my speakers is 400w, so nothing extreme.

dry solder joint? Id fix that by cutting, re soldering and taping?

[holdenboy]

It would only be too much current draw if the system was playing flat out everytime it happens.

What StoneX means is the power connector on the head-unit...where the plug goes into the unit at the back (internally).

[vlv8vic]

had the same thing on the VL years ago and it was something in the selector shorting out. I cleaned all the old shavings out of the terminals and re-greased them and everything was fine. Why i do not know but that was causing it. It was almost always when i selected reverse or went back to park sometimes.
I worked out what it was by keeping the car stationary and shifting and wiggling the selector.
Still don't know how or why it affected the stereo but for whatever reason it did.

[StockoVRWagz]

The sub cuts out on volume level 16 on most songs, thats what I meant by it being current draw, and even lower, maybe 12 when my headlights are on.

So what you mean by it being internal, is take it back if its under warranty?

The old shaving in the terminals..are you talking about the plugs in the centre colsole that arent being used, like climate control, elec. windows?

[vlv8vic]

i think the bits i cleaned out were the points that selected the appropriate light in the console.

[StockoVRWagz]

ok ill have a look and see what cheaning it all out does. thanks mate

[holdenboy]

I would put a multimeter on your battery while the stereo is on, say half volume and the car is idling. The voltage at the battery should be between 12.5-14 volt.

[StockoVRWagz]

will also do that, thanks

[StoneX]

You have 2 faults... They are unlikely to be related.

[StockoVRWagz]

Fixed the sub cutting out problem, was a loose -ve terminal, not sure how that happened lol, Still yet to try the head unit problem. will write back when I try that.