GEN 2 auto stop start causing amps to cut out

[smurfslayer]

Let’s here it....

Rob, you were right....Sorry for dismissing your explanation.

Ahhhh thanks guys, I appreciate it.
Sent from my iPad using Tapatalk

I could have changed the outcome if I’d just bought a capacitor and installed it. Then, most certainly, the signal would have been an issue, even if every other F150 ever made would have had constant signal, mine would have been the unicorn.

So I suppose a capacitor would be a possible option?

 

[MnFlyer]

I don’t believe a cap will solve your problems.

All the cap will do is further drain your battery when you are stopped.

Even a 3 farad, Farquhar... phillipino... whatever that unit of measure is... won’t help. The cap can’t generate any wattage it just stores potential. As soon as your truck shuts off the battery and the cap are powering everything. The cap will most likely have the most voltage since and it will drain first and quickly.

Now when your truck goes to start the battery has to turn the starter and provide voltage to the cap further dropping the battery voltage during the start.

There really isn’t any practical way around it save for a much larger battery but that would be iffy as well.


Sent from my iPhone using Tapatalk

 

[Guy]

Smurfy...

I’m running 2000 watts and was having some voltage drop problems as well.

I solved it with a super duper AGM battery from Northstar.

now I can’t make the voltage drop even if I wanted. With volume at 27 and dean martin crooning to shake the windows... voltage never gets less than 13.8

 

[smurfslayer]

Smurfy...

I’m running 2000 watts and was having some voltage drop problems as well.

I solved it with a super duper AGM battery from Northstar.

now I can’t make the voltage drop even if I wanted. With volume at 27 and dean martin crooning to shake the windows... voltage never gets less than 13.8

what? no love for the Chairman of the Board? ;-)

thanks for the suggestion. TBH, this is kind of a good problem to have ;-)

 

[lawdog]

Sounds like a yet another perfect job for the trailer wire auto start-stop disable...

Do you actually like auto start-stop? I hate it, and it can't be good to start the engine 5-10 times more per day.

 

[Guy]

I recommend you disable it with a tune. You’ve come this far smurf... why deny yourself the experience????

 

[melvimbe]

So I've also got a 2017 with aftermarket audio, stop/start is on but the audio isn't cutting out and I haven't messed with the battery. Is this issue only going to happen with certain amps?

I didn't do the install myself, so it's possible my shop did something to prevent this that I'm not aware of.

 

[smurfslayer]

thanks for the more responses; so I’d rather not disable it if I can avoid it. I’ve been doing it manually. Although I try to avoid it, sometimes I find myself in urban traffic light hell and yes, it definitely helps in this situation.

@melvimbe - was your battery upgraded, supplemented or did they add a capacitor?

I’ve also just recently noticed that my Morels going through the (Morel) crossover takes a tick longer to fire up than the rest of the speakers. I’m not sure if the doors are on but the tweets are definitely slower to fire up; I can hear sound behind me and then they fire up. it’s not a huge deal but noticeable.

 

[melvimbe]

@melvimbe - was your battery upgraded, supplemented or did they add a capacitor?

They didn't upgrade the battery and I'm not aware of them doing anything else in this regard. In a stock system, either the voltage drop happens and the amp handles it somehow, the stock amp is wired differently than yours, or somehow the system knows the amp is there and doesn't drop it's voltage?

Besides a different amp then you, they actually didn't remove the Sony amp in my case. The new amp is under the driver's seat. I assume they disconnected the old amp from power, but I've honestly never looked back there.


Edit: Could it be that my amp doesn't mine the drop? The spec sheet says it runs 7.5- 15 V, 520 amps total.

 

[smurfslayer]

Thoughts?
https://www.crutchfield.com/p_122XP750CK/XS-Power-XP750CK.html

I’m trying to think this through and I don’t have the usual light dimming or other indications of voltage drop at any time other than the start up during the auto-stop start restart. Maybe this is why the kicker sub and amp upgrade disables this “feature”?