jerky shifting, when bass hits
#1
jerky shifting, when bass hits
i notice that when my car attempts to shift, its very jerky, especially when i have my music very loud, when the bass hits really hard, i get really jerky shifting, i remember reading a post about this but cannot seem to find it, does anyone know whats causing this and how can i fix this?
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Re: jerky shifting, when bass hits
your amps are drawing too much power. The stock alternator simply can't keep up. The best way to fix it would be to get a HO alternator or just get your stock one re-wound. I don't know of an available aftermarket alt though. A capacitor will most likely not help.
#4
Re: jerky shifting, when bass hits
i have a coupe, and yes it automatic, i have 2 amps, jl 300/4 and a jl 500/1, i was planning on selling my 500/1 to get a 1000/a but since you say its drawing too much power, i think having a 1000/1 would be worse... damn
what do you mean by gettin the alternator rewound? you mean rebuilt? how much for a stronger alternator? and do you know where i may be able to order one? i thought the bigger the alt, the more HP it will take away from your car, is that true?
what do you mean by gettin the alternator rewound? you mean rebuilt? how much for a stronger alternator? and do you know where i may be able to order one? i thought the bigger the alt, the more HP it will take away from your car, is that true?
#6
Re: jerky shifting, when bass hits
Mt brother-in-law has the same issues with his 03 Sedan 5AT.
In my coupe, running a 1000/1 and a 450/4, my instirments go crasy. VDC turning on and off. The speedo looks like it is waving at you going from your speed to zero, back and forth. Lights blink, etc.
I haven't installed my cap yet so I am not sure if that helps or not.
Alternator rebuilding is a good idea. Need to find someone who will. They might be able to rebuild it up by 80 or so amps.
My brother-in-law said the problem got alot better after they put everything to 4 ohm instead of to 2 ohm. This makes sense, right? I=E/R, blah, blah, yes I think that is right.
But I am not sure with the JL amps...they are a "true rated" amp. Same power output from 1.5 ohm to 4ohm. Anybody have a DC ampmeter?
2004 G35 Coupe 6MT
Volk GT-7's/ TEIN Basics
Falken 245/35/ZR19 & 285/35ZR19
Kinetix Racing Camber Rods/ K&N Typhoon CAI
In my coupe, running a 1000/1 and a 450/4, my instirments go crasy. VDC turning on and off. The speedo looks like it is waving at you going from your speed to zero, back and forth. Lights blink, etc.
I haven't installed my cap yet so I am not sure if that helps or not.
Alternator rebuilding is a good idea. Need to find someone who will. They might be able to rebuild it up by 80 or so amps.
My brother-in-law said the problem got alot better after they put everything to 4 ohm instead of to 2 ohm. This makes sense, right? I=E/R, blah, blah, yes I think that is right.
But I am not sure with the JL amps...they are a "true rated" amp. Same power output from 1.5 ohm to 4ohm. Anybody have a DC ampmeter?
2004 G35 Coupe 6MT
Volk GT-7's/ TEIN Basics
Falken 245/35/ZR19 & 285/35ZR19
Kinetix Racing Camber Rods/ K&N Typhoon CAI
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Re: jerky shifting, when bass hits
Our stock alts are rated at 110 amps. They draw with a 300/4 and a 500/1 is probably around 80-90 amps. When you are cranking it, there's not much left over for the car itself.
Rewinding/rebuilding the alt might bump that up to 160-200 amps. However, when you rebuild, you lose power at lower rpms and gain at higher rpms. I don't know if anyone's ever rebuilt a G alt but I'm sure it's possible.
In terms of going with a 4 ohm load, it shouldn't make a difference. JL claims the same output from from 1.5 to 4 ohms but the amps will put out more power on the lower end of that spectrum, just not to the same degree as other company's amps.
Rewinding/rebuilding the alt might bump that up to 160-200 amps. However, when you rebuild, you lose power at lower rpms and gain at higher rpms. I don't know if anyone's ever rebuilt a G alt but I'm sure it's possible.
In terms of going with a 4 ohm load, it shouldn't make a difference. JL claims the same output from from 1.5 to 4 ohms but the amps will put out more power on the lower end of that spectrum, just not to the same degree as other company's amps.
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Re: jerky shifting, when bass hits
Hey guys I was the original member have that problem with my system. I had posted about this topic a while ago. I was pushing th 8w7 w/ a 500/1 amp. The power made the car shifting terrible,jerky and uncomfortable. It was pulling way too much power and I was told that a cap would not help the situation. My car is a lease so I didnt want to swap alternators or have mine re-wound. THerefore i just pulled the entire system out. It sucks cuz it was sounding reall good but I prefer to lose the sound than to mess up the tranny or anything else.
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