JL 500.1 / 300.4 (car jerks upon shifting in AT)
#1
12-11-2005, 07:07 PM
JL 500.1 / 300.4 (car jerks upon shifting in AT)
i have an 04 AT Coupe... and when i listen to my music pretty loud, especially on songs with a lot of heavy bass. My car would jerk while upshifting or downshifting... this is annoying because i can't enjoy my music, however at idle, its fine... only while driving upon shifting does it jerk, is there a way to fix this? and also will this be bad on the car?
#3
12-12-2005, 02:31 AM
#4
12-12-2005, 02:41 AM
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Dude, chill out. He asked a question, I asked for more info.
Now, since you don't have anything to help him, I at least am trying. If he plays his music loud and hard, he is drawing alot of current from his alternator and thus his whole car electrical system. Also, that he has an Auto, this can be especially true. He never said anything about his tranny (nor did I). Where did you come up with tranny?
OK, just trying to help here...how about YOU?
Now, since you don't have anything to help him, I at least am trying. If he plays his music loud and hard, he is drawing alot of current from his alternator and thus his whole car electrical system. Also, that he has an Auto, this can be especially true. He never said anything about his tranny (nor did I). Where did you come up with tranny?
OK, just trying to help here...how about YOU?
#5
12-12-2005, 03:35 AM
#6
12-12-2005, 11:05 AM
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Well, considering the tranny is computer controlled,. the large current draw may be messing with the tranny's systems. I would make sure the tranny has a good solid ground directly to the battery for starters, if the tranny is sharing the body as a ground path, the current flow from the return of the amps may be impeading the ground of the tranny.
#7
12-12-2005, 11:37 AM
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#8
12-12-2005, 11:41 AM
#9
12-12-2005, 11:52 AM
I would think it may have something to do with the ground on the tranny, most likely between 1st and 2nd & 2nd and 3rd.. I did notice a difference on my 5at also after adding my 500/1, but I also now have the 10 wire ground kit....after that the shifts were faster and alot smoother. You may want to go that route or just make a few ground wires yourself at least. Tranny directly to the battery and maybe the tcu also. Figure the amount of juice your pushing back through your ground after running the amps, hu, accesories compared to what the car normally pushes!
Last edited by gizsf; 12-12-2005 at 11:54 AM.
#10
12-12-2005, 12:05 PM
Originally Posted by gizsf
I would think it may have something to do with the ground on the tranny, most likely between 1st and 2nd & 2nd and 3rd.. I did notice a difference on my 5at also after adding my 500/1, but I also now have the 10 wire ground kit....after that the shifts were faster and alot smoother. You may want to go that route or just make a few ground wires yourself at least. Tranny directly to the battery and maybe the tcu also. Figure the amount of juice your pushing back through your ground after running the amps, hu, accesories compared to what the car normally pushes!
#11
12-12-2005, 01:07 PM
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Originally Posted by amthar
uh...
upshifting and downshifting = transmission usage
upshifting and downshifting = transmission usage
OH, and by the look of things, I say get a small 1 farad cap. Looks like the current draw may have an impact on your car. Since the Tranny (there, I said it
) is controlled by the ECU, I'm sure from what you described getting the cap and some betting grounding will solve your problems
Last edited by mephistomyhero; 12-12-2005 at 01:11 PM.
#12
12-12-2005, 02:33 PM
Originally Posted by mephistomyhero
Dude, chill out. He asked a question, I asked for more info.
Now, since you don't have anything to help him, I at least am trying. If he plays his music loud and hard, he is drawing alot of current from his alternator and thus his whole car electrical system. Also, that he has an Auto, this can be especially true. He never said anything about his tranny (nor did I). Where did you come up with tranny?
OK, just trying to help here...how about YOU?
Now, since you don't have anything to help him, I at least am trying. If he plays his music loud and hard, he is drawing alot of current from his alternator and thus his whole car electrical system. Also, that he has an Auto, this can be especially true. He never said anything about his tranny (nor did I). Where did you come up with tranny?
OK, just trying to help here...how about YOU?
#13
12-12-2005, 02:51 PM
I have a Cap on my 500/1 hooked up to my 12 JL W7...
I know exactly what you're talking about, when I bump really loud the tranny jerks a little bit here and there. But not too much.
I always knew deep down it might have something to do with the grounding, but it didn't occur that much (Tranny Jerking) for me to do something about it.
I know exactly what you're talking about, when I bump really loud the tranny jerks a little bit here and there. But not too much.
I always knew deep down it might have something to do with the grounding, but it didn't occur that much (Tranny Jerking) for me to do something about it.
#14
12-12-2005, 04:02 PM
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Originally Posted by MikeyMike
I have a Cap on my 500/1 hooked up to my 12 JL W7...
I know exactly what you're talking about, when I bump really loud the tranny jerks a little bit here and there. But not too much.
I always knew deep down it might have something to do with the grounding, but it didn't occur that much (Tranny Jerking) for me to do something about it.
I know exactly what you're talking about, when I bump really loud the tranny jerks a little bit here and there. But not too much.
I always knew deep down it might have something to do with the grounding, but it didn't occur that much (Tranny Jerking) for me to do something about it.
