Frontend shake when accelerating

[samgann]

Hi all...
I have a 1990 honda accord 5 speed...
When I am on the highway going about 50 Mph and up and press on the gas pedal the whole frontend shakes...when I let off of the gas pedal the the shakes go way..

I have replaced all 4 tires,new rotors,new struts,new tie rod ends, new stablizer bushings, alignment, new motor mounts, both half shafts...

The whole frontend has been rebuilt....I have took car to many mechanics
they cant fix....
Does anyone have an idea of how to fix this problem..??
thanks
Sam

[ExplodingCake]

Something is loose. did you check everything is tight?

[samgann]

Yes, I took car to Honda Mech...
He said all is tight...

Do you think it may be the tranny...or flywheel and clutch..??

[accord2nr81]

damn i was going to say it was wheelhop but you done replaced everything that i would have said it would have been.... as far as the clutch and flywheel.... around 55 is the only time it dose it? what about at 70 35 15

[cpl hero]

I know this is kindda stupid , but were the wheels balanced properly before they put on your car and also do you hear any clicking in turns, cause if i'm not mistaken your CV joints can cause this too.

[samgann]

I can drive the car around town under 40Mph allright...But if I accelerate hard
the front end will shake...On the Hiway at 50,60.70.80 Mph...and accelerate the front end shakes....

As far as balance I had the new tires balanced 3 times...and even put the tires that where on the front on the back and still shake... No clcking noise at all
Im lost on what to do next..

My car is at the shop now...thanking about changing the tranny...
Any sugestions..??

[NAiL05]

damn i was going to say it was wheelhop but you done replaced everything that i would have said it would have been.... as far as the clutch and flywheel.... around 55 is the only time it dose it? what about at 70 35 15

Wheel hop at 50mph???? Wheel hop is a term used under hard launches and crap at the start and the front wheel has a "hopping" feel. Anyway are your lugnuts tight. Retarded question but you nver know.

[samgann]

yes..Honda Mech...checked all that today...

Mech seems to thank it mite be the flywheel...or tranny...the tranny shifts perfectly....

[jhondayaaj]

your inner cv loint is no good. replace your axles buddy. I don't think he is a very experienced Honda Mech. LOL. i AM. hahaha. just kidding. your inner loints are bad though, causing the shaking when on gas.

[samgann]

Replaced both half shafts...the one on the right side 2 times..

[mtnbikaah]

** edit, i just read that you had the mounts replaced.

(srry bout that)

i had/have a similar problem...

check out your front and rear engine mounts..

my front mount was broken (the rubber piece in the top). to check i put a floor jack under the oil pan and lifted the engine slightly. and i could see the mount move and light in the rubber piece.

so check that out.

i still have a little shudder under accel but i think it is the rear mount maybe... but that one i cant even see because the IM is in the way...

hope that helps.

[cpl hero]

Your tranny's not gonna make your car shake, the motormounts are a possibility but you changed them already. It really sounds like it's your CV joints. Has the car ever been in a wreck or curbed really hard, look to your control arms and their bushings. To do a check, just jack your car up, place your hands at the 12 o'clock and 6 o'clock position, and try to wiggle the wheel. If you got play, the bushings might be shot or the control arms f#*ked. But I definately guarantee that it's not your tranny. Remember.... CV joints, control arms (upper and lower), and control arm bushings. Hope this helps

[samgann]

Changed the right half shaft today....did not help...
all the motor mounts are new....
Going to change the left half shaft tomorrow....
I hope it is not the tranny....
The hole front end is rebuilt....
I did notice that when the right half shaft was changed...that I could drive around town and all seemed fine..but when I drove down the hiway and was around 65 Mph and steped on the gas the front end would shake again...
Remember I replaced the right half shaft for the third time......
I have not changed the left half shaft but 1 time..so maybe that is what the problem is..
I changed both half shafts at the same time originally...They where half shafts from Oriley's..
Maybe someone can help
Thanks
Sam

[samgann]

Ok replaced upper control arms...both sides
left side half shaft...still same shake shake shake....when I accelerate

Only thing left is tranny...
going to replace tranny ..and use new flywheel,cluch,pressure plate..
last time I changed tranny about a year ago...I did not change cluch..

Oh well...all it is money...
I'll let you al know what happens..
thanks all
Sam

[H23Accord]

I have a similar problem but I think mine may be either related to my wheels not sitting flush to the hub (was told I may need hubcentric wheel spacers...which seems dumb to me to space a wheel out to make sure it sits flush to the hub), cheap tires or wheel bearings. I plan on changing wheels within the next week but have you checked your wheel bearings? I didn't notice it in your list of items you replaced.