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shimmy is for music - not the cruiser

1033 Views 15 Replies 7 Participants Last post by  dana44
Been awhile since I have posted... I am usually offering stupid advice, not asking for it.
The culprit is my 2005 PT with a 5-speed.
Background - this is most likely the most abused PT on the highway, as I am in semi-tractor driveaway services and tow this car behind tractors to delivery - hop in the PT and go to the next job.
After logging over two million miles in these things, I have been up against most issues more than once and do the lion's share of my own repairs and overhaul.

As such, this PT has logged 450,000 rolling miles and 210,000 under power. This is PT #5 for me.
BUT, this one has a pretty wild shimmy that exhibits itself ONLY on harder acceleration and around 45 through 60. Brake rotors are new and fine - no hot spots. Recently replaced both front axle bearings - all seems well and torqued properly. Front to back tire change? I discounted tires as these were rotated and balanced about 2 thousand miles ago. Seems to have been gradually occurring, so...

I changed out the CV axles last year but I am tending to blame the axles again or bearings in the trans. I have another trans in my shop. The weight of the car with me, the equipment and a tank of gas is right at 5 thousand pounds.


Wheel Tire Car Automotive parking light Automotive side marker light
Wood Floor Flooring Engineering Machine

the steel I built and carry... and a typical hookup to tow the PT...
Bicycle tire Motor vehicle Automotive tire Asphalt Road surface


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Chuzz, Imperial, thank you for the responses... I have changed out the entire lower control arms when I pressed new bearings into the spindles recently. As I said before, I am tending to blame the CV half shafts and will go that route for now... have a set on the shelf. Ha! Car has original struts and it is a good excuse to change those, too. Thanks, Guys
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PS> I beat the crap out of those lower control arm bushings and have sets in the shop all the time. Imagine if you were being yanked around by a semi on these crappy highways today...
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KOG - the real thing contributing to the weight is the steel, tools and chains that are needed in my driveaway business.
The picture above shows what is in the PT at all times + the steel hitch that is in front. I cut the frame off at the crossover plate and mounted C channel steel, multiple grade 8 bolts to the frame and then the front frame for the v hitch. If I hit anyone, I WILL hurt them. Ha! A semi-tractor side-swiped my previous PT and totaled the car - but I drive it home... the tractor, however, caught the front hitch and wiped out both outer dual tires and massacred the rimes - had to be towed. If you look closely, the hitch is still there and I used again on my present car. I saved the engine, tranny and lots of other things which have come in handy.
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What did those wheels come off of? I've never seen any like that on a PT.
Dodge Neon - Snowflake aluminum... one inch smaller tires than factory. Keeps you within the law on the speedo. ha.
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Imperial - Chuzz...
Yup it was what we suspected - inside passenger CV half shalt.
Thanks for the discussion.
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