yo,
Good stuff!
In fact, in addition to what Bob & Krafty have asked, Ford wiould give you this to fill-out;
Noise, Vibration, & Harshness Diagnostic Location Diagram & Worksheet
Source: by Ford via Steve83
This is what a pro would use if called into a dealership or a GOOD shop that will stop trying to find a problem with the usual supsects (on the List above). A Bad shop will work on the Bronco or vehicle for days, and then give up after charging about $400.00 or more.
Vehicle Speed Related Vibrations.
http://www.vibratesoftware.com/html_help/html/Diagnosis/vehicle_speed_related.htm
&
Engine Speed Related Vibration
http://www.vibratesoftware.com/html_help/html/Diagnosis/engine_speed_related.htm
Belt-Driven Accessory Speed Related Vibrations
http://www.vibratesoftware.com/html_help/html/Diagnosis/Engine/belt-driven_related.htm
go the the drill-down and use the info as a guide;
"A vehicle speed related vibration will usually always occur at the same vehicle speed regardless of engine RPM. This type of vibration cannot be detected with the vehicle stopped.
After your road test, mark the point on the vibration worksheet where your Vibration RPM and your Engine RPM readings intersect. The point of intersection should be on or near a vibration line on the vibration worksheet. Each line is identified with an abbreviation like T1. T1 represents a first order tire speed related vibration.
Vehicle Speed Related Vibrations can be classified into two categories:
Tire Speed Related Vibrations, (T1, T2, or T3 on the vibration worksheet). A tire speed related vibration will usually appear at higher vehicle speeds (50 mph and above).
Propshaft Speed Related Vibrations, (P1, P2, or P3 on the vibration worksheet). A propshaft speed related vibration will usually appear at mid-range vehicle speeds (25 - 50 mph). This type of vibration usually gets worse at higher vehicle speeds.
then ater selecting, say, "Tire Speed Related Vibrations, (T1, T2, or T3 on the vibration worksheet):
you'll see;
First Order Tire Speed Related Vibrations, (T1 on the vibration worksheet) First order tire speed related vibrations cause one shake or disturbance for each revolution of the tire.
First order tire speed related vibrations cause one shake or disturbance for each revolution of the tire.
IMPORTANT: Anything that is out of balance will only cause a first order vibration, never any higher order vibrations.
NOTICE: The following items should be checked in the order shown.
First order tire speed related vibrations are usually caused by:
A tire or wheel that is out of round - Click here to measure tire and wheel runout
A tire or wheel that is out of balance - Click here to measure tire and wheel balance
A brake drum or rotor that is out of balance - Click here to check drum or rotor balance
An axle ****** or hub that is out of round - Click here to measure Axle and hub runout
Wheel stud circle runout - Click here to measure stud circle runout
Stiff spots in the tire's sidewall. (Force variation) - Click here to learn more.
Drive axle problems. Click here to diagnose.
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Check what you can yourself or w/ a helper to narrow the List down.
Energy suspension polyurethane bushings shouldn't cause that much of a problem, Ck body bushings; maybe a prev owner or shop slapped in some hockey pucks or went to alum or steel... yep, seen that done on an "Ultimate Bronco Street Machine" that also had all ss engine, tranny, etc. mounts and a trucker type air suspension driver's seat... but his better half kept losing fillings so the dude sold the Bronco for cheap last year.
Energy Suspension actuualy used to cite that; "And aluminum body mounts are too harsh for street use that they tend to break To Break And Cause Other Components To Break!"
I think thy used to offer em for GM street /off road racer projects
And here is somethAng neat..
GPM XET330TRU XMOD Evo Truck Billet Aluminum Front Body Mount - 2006 Ford F150AtomicMods Product ID: 10991 This billet part is for the XMOD Evo Truck. It is milled to perfection from a single block of billet aluminum. The bright silver finish is not only beautiful, if you happen to scratch or ding it, its the same color throughout. Billet parts are also more durable than factory parts and perform with greater precision. For Use With:XMOD Evo TrucksWeight:1.77gLaunch Date:1/6/2006Shipping:Normally ships within 1 dayYour Price $9.99
