shaking during accel

apparently this thread died… i shall resurrect it!

anyway, i have replaced my wheel bearing and the intermediate shaft support bearing. all the axles are snug with very little play. they are good brand new axles. i am ruling out axles at this point. simply because it is not possible to have bought six brand new axles all with the same problem from 3 different brands. i replaced them in pairs.

my current theory is a problem with the power pulse cycle in the engine. i have some evidence to support this theory. i cleaned out the throttle body and intake manifold and replaced the spark plug wires with msd superconductor wires. the engine sounds much better, idles smoother, and the vibration under acceleration is much less severe. this does not rule out a possible binding problem with the transmission. however, i did replace the old transmission with a rebuilt one and the vibration was happening on the old tranny too, so, i highly doubt that is the problem. i am going to do a compression and cylinder leakdown test then do a power balance test to make sure the engine is hitting evenly on all cylinders and there are no mechanical problems. if the power is even then i can rule out the engine itself from the list of possible causes.

i’ll update this when i get time to do all that.

yeah keep us updated.

bump… havin this problem too and pulling my damn hair out

[QUOTE=Blackknight;1693332]Ok this all started when my axle went out. Then replaced it and had lots of other problems. So far this is what I have ruled out.

Ball joints, both replaced
tire rod ends, both replaced
tire balance is good along with the tires
Tightened up motor mounts (innovative)

I can’t seem to figure out what it is. I was thinking when I changed the tire rod end I might have made the wheel bearing bad from driving on it for 2 days with it pointing in the wrong direction (not aligned).

Shook a lot more before I tightened the motor mounts. Before I left some stuff not fully tightened, but now I know it’s all tight and aligned and it still shakes significantly under load during accel. On the highway it’s fine though??? slow accel isn’t too bad, but definenlty giving it gas gives me vibrations.

I was also considering the cheap axles, but I replaced the driver’s side again just to kinda rule it out. They are cheap remans though. Maybe the half shaft? It does have a little play in it, but didn’t seem to be abnormal? I’m kinda stumped and tired of replacing stuff without fixing the problem…even though it definently needed the stuff replaced. What do you guys think? Seems to be coming from the drivers side. I was considering finding some oem honda axles. anyone know where to get them for a good price? Know this is a lot to read so sorry about that.[/QUOTE]

your stiff mounts would cause some vibrations, anytime you put in stiffer motor mounts you will get more vibrations over stock… just me $.02…

I’ll jump on this train too and say that I’m having this problem and so far I swapped out the cross member with the rods and replaced the passenger side axle. It seemed to go away after the crossmember changed but its back but no where as severe.

may i also say it only comes in after driving for about 15 minutes.
the hotter the outside temps. the sooner it will start shaking.

i checked the mounts, axels, suspension parts everything and still cant find this damn problem.

i feel like im gonna just set this thing on fire and call it quits

I understand ! I was thinking of putting C-4 to mine. I just replaced the engine and even bought a tranny(haven’t installed it yet) and its still doing this crap. I was about to sell it and get a 91-92 Sentra SE-R.

I gonna try replacing the shock and tightening those rods from the crossmember.

i think i found the problem… ill update later

LMK ! This shaking is getting annoying !

PLS do so! I’ve had mine for about a year and a half now. Keep us updated

inner joint on a new axel. it shock so much it pulled itself out of the trans.

Did you just swap it another axle ?

damn forgot to reply here…

but yes i replaced the axel with a NEW 1… dont get remans… ever

Shaking on accel…

Hey Jamaican, forgive my being lost, but I’m having trouble reading all the threads on this. Did the shaking/vibrating stop or what? Having the same thing and I’m suspecting it’s the tranny mount. Lemme know.

the tranny mount is really easy to tell.

explain the kinda vibration your having. is it only on acceleration? is it only at high speeds? is it constantly there?

also wat kinda axels do you currently have?

I had this for awhile. bought a remaned axle due to my inner cv being the culprit on the drivers side, going into the intermediate shaft. After acouple months its back but not as bad, yettttt.

I just swapped out my Reman’s for another set of Reman’s but I know I’ll be getting another set in a couple of months too even though they feel good now. Money is tight !

Got the same problem here…

I only get shaking during hard acceleration before the car gets hot. It’s about a 40 min commute to my girlfriends house, and about 10 minutes in, I notice the shaking is gone.

In and out play of the wheel is sign of a bad wheel bearing, right?
I can feel the shaking coming from the front driver side.

93 integra… i bought it slammed on the ground… both axles bad… replaced with auto zone remaneds. shacking was insane… notice that the angle of the axles at the cv joint was bad cus it was lowered… put stock struts on and axles are prety much inline and shaking is gone!

Vibrating during accel…

[QUOTE=JAMAICAN B18;2062089]the tranny mount is really easy to tell.

explain the kinda vibration your having. is it only on acceleration? is it only at high speeds? is it constantly there?

also wat kinda axels do you currently have?[/QUOTE]

Sorry for the delay on this Jamaican.

Ok, two important symptoms are, that it ONLY does it when accelerating, but only between 40-60mph. I can COAST at 40-60mph and no tremor but the min I lay on the gas tremors til about 60mph then almost completely stops, but remains very subtly. So it has to be between tranny and wheels; also it seems to be wobbling more front to back than side to side, hence the little effect on steering. Some have suggested flywheel, but this would manifest it @ any speed, not just 40-60, no? Here’s what I’ve ruled out :

  • Wheels have been balanced and rotated. Initially I thought I’d lost a weight and this was my prob, not the case.

  • Brake rotors or pads would manifest it more when braking, not what happens. Pads are OEM, they’re fine too.

  • Replaced front,and pass side engine mounts [I thought this was the prob since wheels were balanced, NOT]

  • Swapped axles, that I know are balanced.

  • Checked remaining mounts - seem fine, no visible cracks or over flexing.

  • Clutch engages fine, which I thought may be slipping due to it only doing it while accelerating/torque, but should do it all the time, not just 40-60mph so not the clutch.

  • Shocks are a year old and have taken no holes, besides shocks should manifest at any speed depending on road.

  • Only manifests it between 40-60mph, so it must be from the tranny out.

I’ve suspected it to be the tranny, I dunno syncros or somethin. It’s not the gears cuz I’ve used everything between 2nd and 5th @ 45mph and does it regardless. I’d hate to bring it down and find it’s something else. Would a bad center link or rack & pinion do this? Can’t be harmonic balancing cuz it would do it on neutral when revving, no?

I’ll keep stickin my head under the hood til I find it - I’m tenacious like that but thanx for the followup sir.