Car jolts, Hu shuts off, amp wont turn back on


DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
So my civic, has done this twice. Where it will jolt forward while accelerating, as if i had popped the clutch, although i dont do that, and the Hu restarts itself, and my sub ceases to work. No heat detected from the voice coil nor the amp. After the HU turns back on the front stage continues playing without the sub. The green light on both the amp for the sub and the front stage are green. No issues there. All grounds are checked and good. Lead wires good, tight and secure.

Im wondering if this is a mechanical problem with my transmission that causes it to lock up for a split second, just enough for the car to stall. although it happens so quickly indont even have time to look at the rpms, so who knows. The transmission does have an issue where it slips out of reverse. So every time i back up, i go through this charade of putting it in reverse, grinds, go back in, nothing, then eventually it engages. I mention this only because i beleive 1st is linked to reverse, or i might be thinking of 5th. I cant remeber, not good with transmissions, regardless the both times this happened was halfway through accelerating through first.

The first time this happened, i went into work, so it sat for hours, came back out and everything was find. This second time, well i havnt even looked at it as im scared im gonna find something i dont like.

Also before you asked, i replaced clutch, all engine tranny mounts, and checked shift linkage. The reverse issue is from inside the tranny. So kinda scared to go look at this car, what do you guys think. Can any sort of electrical issues or heavy load cause a car to do this?

Edit--------

I will add, that with the mechman alt i installed, i left the belt just loose enough to where it doesnt squeel. As it should be, however as the belt break in, within a week or so they stretch just a tad. Therefor must be adjusted, tightened to where it doesnt squeel, i have no done thhis yet so it squeels on start up. I doubt this could cause an issue while driving but i dont know it all so who knows, better too much info then not enough

 

BOOMINGRANDPA

WOLFRAM FTW
Jan 8, 2017
7,079
21
NC
belt maybe part of problem,, sounds like u put to much $ in car audio (i know no such thing here) when u shoulda got new car 1st huh..

 
OP
DarkKnightSM

DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
belt maybe part of problem,, sounds like u put to much $ in car audio (i know no such thing here) when u shoulda got new car 1st huh..
Haha! Yeah i spent 1700 on the civic woth 220k but i love it. I will rebuild this car 5 times over before i get another car. I put 1000 into other things such as suspension. But will wait until this engine and tranny blow on me to replace em

 

BOOMINGRANDPA

WOLFRAM FTW
Jan 8, 2017
7,079
21
NC
Haha! Yeah i spent 1700 on the civic woth 220k but i love it. I will rebuild this car 5 times over before i get another car. I put 1000 into other things such as suspension. But will wait until this engine and tranny blow on me to replace em
guy at stereo shop i worked at bought 82 civic $300 15 yrs ago, came in with his tax check $4400 said he wanted a stereo guess how much it cost?, come on anyone guess.., he got 2 nice high current aria amps + 4 channel and 6 10's 2 comp sets in doors and a coax set right behind each head rest (built into sub box) it was pretty loud took it to couple comps 4 months later motor blew it sat in our shop for 3 months we used to hook it to battery charger to demo stereo for customers shook stuff off walls for real.. ended up taking everthing out he just had to sell at used price and of course like $1500 of that was labor so he may have got $1200-$1500 back idk..

 
OP
DarkKnightSM

DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
guy at stereo shop i worked at bought 82 civic $300 15 yrs ago, came in with his tax check $4400 said he wanted a stereo guess how much it cost?, come on anyone guess.., he got 2 nice high current aria amps + 4 channel and 6 10's 2 comp sets in doors and a coax set right behind each head rest (built into sub box) it was pretty loud took it to couple comps 4 months later motor blew it sat in our shop for 3 months we used to hook it to battery charger to demo stereo for customers shook stuff off walls for real.. ended up taking everthing out he just had to sell at used price and of course like $1500 of that was labor so he may have got $1200-$1500 back idk..
I really do wish more car stereo stores did this. But na, always gotta have em in those ****** glass rooms

 

BOOMINGRANDPA

WOLFRAM FTW
Jan 8, 2017
7,079
21
NC
used my altima as sound room really we had nice one to should speakers and hu's but to actually hear a system i'd just take them to my car and say, those subs with that amp u looking t be 3-6db louder than this and they'd be all over it.. had some cool reactions to our systems up there, this very very gay black guy had a beat up ford probe i think and sold him our $1k system which was jvc hu, 4 memphis speakers, 4 channel memphis power bass (only like 300rms total) with 1 12 (or 1-10 usually in trucks, wife had that in her s10 was pretty good not loud just good) so he had 1 12 sealed with like 150rms at best i turned that thing on and he actually started jumping up and down it was funny... those small systems with 2 memphis 10's in mustang hatch back were quite loud for having practically no power

 
OP
DarkKnightSM

DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
used my altima as sound room really we had nice one to should speakers and hu's but to actually hear a system i'd just take them to my car and say, those subs with that amp u looking t be 3-6db louder than this and they'd be all over it.. had some cool reactions to our systems up there, this very very gay black guy had a beat up ford probe i think and sold him our $1k system which was jvc hu, 4 memphis speakers, 4 channel memphis power bass (only like 300rms total) with 1 12 (or 1-10 usually in trucks, wife had that in her s10 was pretty good not loud just good) so he had 1 12 sealed with like 150rms at best i turned that thing on and he actually started jumping up and down it was funny... those small systems with 2 memphis 10's in mustang hatch back were quite loud for having practically no power
Howed you like being a salemen, ive considered it for when i get out of the service, that or truck driver. I have a few people that can get me into cement truck driving, but to my surprize im good with people and with my newfound hobby to get to spend all day helping people and getting them a cool system kinda appeals to me. Might give it a go if the pay is good.

 
OP
DarkKnightSM

DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
But he just ate...lmao oh man I'm funny.
I did just eat, and **** that car right now. Ugh, dont wanna look at it //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif maybe tommorow

 
OP
DarkKnightSM

DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
Sell it. get another if it's a money pit for ya.
No way! Car audio is the irrational money pit. Keeping the civic makes sense for practicality, and sentimental, kinda. Like coupes, the interior design, exterior, simplicity. It doesnt take much to maintain it. Sometimes i just over burdom myself with projects. Gotta fix the house, replace fork seals on dirtbike, carb work, etc, replace rear tire on r6 and sell my wrx. I get overwhelmed and dont wanna touch anything, ill get over it when work stops being so hectic. I mostly just posted to vent. Power of deduction says alt belt first but im so f ucking lazy about it right now

 

Boomin_tahoe

Hurtin' feelings errrday.
10+ year member
Jul 24, 2005
15,275
137
WA
No way! Car audio is the irrational money pit. Keeping the civic makes sense for practicality, and sentimental, kinda. Like coupes, the interior design, exterior, simplicity. It doesnt take much to maintain it. Sometimes i just over burdom myself with projects. Gotta fix the house, replace fork seals on dirtbike, carb work, etc, replace rear tire on r6 and sell my wrx. I get overwhelmed and dont wanna touch anything, ill get over it when work stops being so hectic. I mostly just posted to vent. Power of deduction says alt belt first but im so f ucking lazy about it right now
I'm pretty much in the same boat you are. Between the Jetta I'm gradually getting it to a normal car, haven't even started my own projects yet installing speakers/s10 stereo install....I gotta honey do list from the old lady for the back bathroom and main bathroom. Plus doing landscaping in my front yard trying to get that done and completed this year. Mark that off the list. I gotta get gravel for that project.

 

garychoffmann

CarAudio.com Elite
Mar 14, 2011
2,012
0
Missouri
I doubt any stereo is going to cause a mechanical issue. That being said and have a grinding issue I would drop your tranny pan. You are probably missing a tooth or gears are ground down/out of serviceable range. If the trans misses a few teeth it will definitely feel like a quick rev and clutch dump as it spins freely for a quick second and catches..... Why does that affect your stereo? My daughters car needed engine/tranny mounts. Every time she would accelerate hard she would blow the fuel pump fuse because of the strain of the electrical wires being pulled furrher than they were ever intended and losing continuity. Engine mounts and new grounds solved her issue. You have a bad connection being exacerbated by a mechanical issue.

 

los33

Car Audio G
Apr 11, 2014
3,560
0
Houston, TX
As far as the grinding and jolt acceleration check your cv axles and bushings and the wheel hubs, but as far as the jolting that is caused by bad clutches causing the miss.

Unless you have a bad speed sensor, but this is a manual..

Also the belt being loose plus the jolt can cause the alternator to slip causing either to turn off or a higher spin rate with a larger voltage being sent out.

Either or will cause all electrical to shut off till it becomes stable.

Tightening the belt will fix the issue.

If the belt squeels then you need to invest in a goodyear belt which is 15-20$ on ebay.

Sent from my Z970 using Tapatalk

 

sfall

Member
Jun 4, 2017
44
0
NY, NY
"So every time i back up, i go through this charade of putting it in reverse, grinds, go back in, nothing, then eventually it engages. I mention this only because i beleive 1st is linked to reverse, or i might be thinking of 5th."

Before you put the car into reverse, always put it into 1st gear first. If the problem isn't too bad, that should stop the grinding.

As for your main problem, you need to start eliminating possibilities. I can think of several things that will cause your problem. At the very least, have the battery checked on a good machine, and make sure the alternator is putting out the right amount of power. After that, go over the spark plug wires very carefully to make sure they're in good shape. If the problem only happens in the rain, 95% its the plug wires. Check the plugs, of course, and while they're out do a compression test. Finish up by checking fuel pressure at the rail, and scan for DTS's. In know this is all basic stuff, but it has to be checked, and it wont take long. If you brought the car to a shop, this is what they will do (hopefully), so you might as well get it out of the way.

Once you do all the above, you'll at least have some info that can point you in the right direction. To me it sounds like you may have a timing issue. Some times the VTEC actuators don't get enough oil and they start to bind up. That will definitely cause the car to either flatten out or shoot forward. Or, it could be an electrical or fuel delivery problem. You just have to keep checking until you find it.

 
OP
DarkKnightSM

DarkKnightSM

Senior VIP Member
Mar 30, 2017
408
0
Co Springs
"So every time i back up, i go through this charade of putting it in reverse, grinds, go back in, nothing, then eventually it engages. I mention this only because i beleive 1st is linked to reverse, or i might be thinking of 5th."
Before you put the car into reverse, always put it into 1st gear first. If the problem isn't too bad, that should stop the grinding.

As for your main problem, you need to start eliminating possibilities. I can think of several things that will cause your problem. At the very least, have the battery checked on a good machine, and make sure the alternator is putting out the right amount of power. After that, go over the spark plug wires very carefully to make sure they're in good shape. If the problem only happens in the rain, 95% its the plug wires. Check the plugs, of course, and while they're out do a compression test. Finish up by checking fuel pressure at the rail, and scan for DTS's. In know this is all basic stuff, but it has to be checked, and it wont take long. If you brought the car to a shop, this is what they will do (hopefully), so you might as well get it out of the way.

Once you do all the above, you'll at least have some info that can point you in the right direction. To me it sounds like you may have a timing issue. Some times the VTEC actuators don't get enough oil and they start to bind up. That will definitely cause the car to either flatten out or shoot forward. Or, it could be an electrical or fuel delivery problem. You just have to keep checking until you find it.
Yeah i go to second before reverse. Not first, doesnt work as well in general for manual cars. Anyway batterys good. Dont know about spark plgs but it didnt happen while raining. However!, i did leave ot, because i forgot, the oil light came on for maybe a split second in an event seemingly unrelated. I was going arounda corner fast when it came on. So i imagine what little oil do have got pushed to one side. Afterwards i checked oil, several times and i cant seem to get a reading of the oil above the min line. I beleive its about a quart low but it doesnt leak any and i see no evidence that it burns oil. So either the oil stick gets messed up as i pull it out or oil is magically going somewhere. I changed the oil like 3 months ago and made sure it was in the middle

So if im understanding you correctly i could have symtops of slight oil deprevation. I just dont want to over fill it. Oh well, ill take a look at the car sometime this week

And the issue with reverse is very odd, it is actually in gear on the shifter. But the transmission is not in gear. The car doesnt move, and when letting out the clutch it has a small grind. Not like the normal, not syncronized grind

 

staan

CarAudio.com Veteran
May 10, 2016
555
2
la
if your oil is low and you jam around a corner hard enough for the pickup to be out of the oil level you will lose oil pressure and oil wont be pushed into bearings. I'm betting you almost seized your engine from oil starvation and your crank bearings probably have scarring on them now. fix your belt, put oil in your car and stop thinking that old *** civic is in the fast and the furious.

 

sfall

Member
Jun 4, 2017
44
0
NY, NY
"So if im understanding you correctly i could have symtops of slight oil deprevation. I just dont want to over fill it. Oh well, ill take a look at the car sometime this week"

My overall suggestion is to just not overlook anything. Sometimes you can be convinced the problem is one thing, and it turns out to be something else. Like I said before, maybe its the VVT actuator, but it may also be an intermittent problem with one of the ignition coils, or possibly something else like a bad tone wheel sensor. Also, its better to put more oil in the car than less (within reason).

As for the trans issue, It may be a good idea to replace the trans fluid (I'm pretty sure your trans takes motor oil, but check just to be safe.), and replace and bleed the fluid in the clutch master cylinder.

 

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