Crazy Shaking

[cpchase]

When my Crown Victoria LTD hits about 80 kmph it begins to shake/vibrate untill around 110 Kmph. And it does it all over the car, and can be felt through the steering wheel too.

So far I have tried....

Ballance and Align

Shocks

Springs

New Tires



...at a loss

[ÆJackacks]

ummmm check all the front end parts?, tie rods, ball joints, ect

[gadget73]

U joints
bent/damaged driveshaft
severely warped rotors



also moving this to the suspension forum

[cpchase]

Thanks for the ideas guys. Ill check out the Drums and Routers tomarrow, along with the driveshaft. I recently had my tie rods and ball joints inspected/replace/re-lubed.

What about motor mounts ?

[mrltd]

The mounts are probably shot, but they would make it shake at any speed....

More like bent wheels, bad frontend parts, bad tires.

[86VickyLX]

When my Crown Victoria LTD hits about 80 kmph it begins to shake/vibrate untill around 110 Kmph. And it does it all over the car, and can be felt through the steering wheel too.

So far I have tried....

Ballance and Align

Shocks

Springs

New Tires



...at a loss

How are the wheels?

[1987cp]

x10,000 on the wheels. Three out of four of the original wheels from my wagon have noticable runout when spun on a balancing machine. I still use those wheels for winter just because they're free, but operating at high speed isn't a lot of fun. Running on wheels that aren't bent makes a world of difference!

[351wcrayz]

Possibility of a broken belt in a tire?

I seem to be having some sort of problem that seems simialar to his.....

Mine only shakes an bakes at 60mph in OVERDRIVE ONLY.... drives perfectly in D, also, seems to have lost a tad of tq......Any ideas?

BTW, hope ya find yer problem mang.....

-Wes

[grandpaslincoln]

Even though this is a slim chance when you've already had new tires and your front end looked over like crazy, but what about loose lugnuts?


Probably not even a possibility, but had to put it out there.

[mrltd]

Possibility of a broken belt in a tire?

I seem to be having some sort of problem that seems simialar to his.....

Mine only shakes an bakes at 60mph in OVERDRIVE ONLY.... drives perfectly in D, also, seems to have lost a tad of tq......Any ideas?

BTW, hope ya find yer problem mang.....

-Wes

Bad torque converter

[gadget73]

bad/wrong balancer or flexplate is also a possible. The 351 does not use the same parts as a late 302, different imbalance weight. 28oz vs 50oz. I wouldn't think a torque converter would be a factor in 3 or 4 with the AOD since its really not being used then. the 3/4 gear uses a seperate input shaft thats connected directly to the converter shell, bypassing all the stuff inside.

[351wcrayz]

Ok mangs thanks, umm, anything I can do while its ripped out to get it some better lowend?

[Grand Marquis GT]

Yes.

Fix the broken cam.

[351wcrayz]

OMFG, the cam is NEW, the old one was just worn out....jeebus.....

[Grand Marquis GT]

That's not what I heard. :smirk: