How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ironmike Your Own Question
Ironmike
Ironmike, Ford Technician
Category: Ford
Satisfied Customers: 3377
Experience:  30 years ASE Master tech L1 . Ford master
11302663
Type Your Ford Question Here...
Ironmike is online now
A new question is answered every 9 seconds

I replaced the ujoints, but upon exceleration intermittent

Customer Question

i replaced the ujoints, but upon exceleration intermittent vibrations, was told that it could be in my rear end differintial
JA: The mechanics have tons of experience in that area. Are those all of the "symptoms"?
Customer: yes
JA: Anything else I can tell the Ford Mechanic before I connect you two?
Customer: I was told that i might have to have a shimmy kit installed?
JA: Got it. Let's get this figured out. I'm sending you to a secure page on JustAnswer so you can place the $5 fully refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and connect you two. You'll be on the road in no time.
Submitted: 7 months ago.
Category: Ford
Expert:  Ironmike replied 7 months ago.
greetings,were the u joints bad? what year and model are we working on?
Customer: replied 7 months ago.
2005 f150 5.4 motor, only the rear, but replaced all three
i was told that i would have to have a shimmy kit for my rear differintial
Expert:  Ironmike replied 7 months ago.
I have seen these trucks with the shimmy or vibration on take off from the drive shaft. I have also done the tsb repair or install the leaf shims to change the drive shaft angle. seemed to happen more on the trucks that came with the towing package.
Expert:  Ironmike replied 7 months ago.
if you had the vibration before the u joints there is a good chance you will need the shim kit installed.
Customer: replied 7 months ago.
yes i have two package, it only happens when I'm excel and in overdrive
Customer: replied 7 months ago.
yes i had before the u joints.
Expert:  Ironmike replied 7 months ago.
ok, highway speeds. never seen driveshaft vibration with this issue at highway speed
Expert:  Ironmike replied 7 months ago.
how many miles? these 3 valve engines need spark plugs every 55-60k
Customer: replied 7 months ago.
just want to check my options before i have the work done and it doesn't work.
Expert:  Ironmike replied 7 months ago.
I have tons of these engine that give a slight vibration, hesitation because the spark plugs are worn.
Customer: replied 7 months ago.
yes highway speed, and only when i'm in overdrive, transmission tech said it wasn't the tranny, and i had bad u join
Expert:  Ironmike replied 7 months ago.
every time I did the shim repair it was because the customer complained of a vibration/shimmy on take off
Expert:  Ironmike replied 7 months ago.
from a stand still
Customer: replied 7 months ago.
160K full tuneup at 155
Expert:  Ironmike replied 7 months ago.
where do you feel the vibration? steering wheel or pants
Customer: replied 7 months ago.
I feel it from front like bumping
Expert:  Ironmike replied 7 months ago.
let me check for bulletins
Expert:  Ironmike replied 7 months ago.
what brand park plugs?
Customer: replied 7 months ago.
i them from ford dealership.
Expert:  Ironmike replied 7 months ago.
ok. checked the bulletin for the shims7-10-9
Customer: replied 7 months ago.
sorry i don't understand, so this a problem with ford(###) ###-####
Expert:  Ironmike replied 7 months ago.
this bulletin does work for both symptomsaccelerating from a stop or coast down from 75mph
Customer: replied 7 months ago.
ok, that makes since, that exactly what my problem is but its usually when i accelerate
Expert:  Ironmike replied 7 months ago.
yes the driveline vibration is an issue with this year truck . installing shims will fix vibration from acceleration from a stop or vibration on coast down at highway speed
Customer: replied 7 months ago.
do you have an idea average cost for repair? I've had two estimates, 800 and 925?
Expert:  Ironmike replied 7 months ago.
kit is expensive and warranty time is 2-3.5 hrs labor
Expert:  Ironmike replied 7 months ago.
kit contains 2 sets of wedges and 8 u bolts
Customer: replied 7 months ago.
ok, thanks for your time
Expert:  Ironmike replied 7 months ago.
ford says to start with the lower degree shim and if it does not solve it go with the larger
Expert:  Ironmike replied 7 months ago.
you are welcome
Customer: replied 7 months ago.
have a good day.
Expert:  Ironmike replied 7 months ago.
hey, have you ever changed the fuel pump driver module?
Expert:  Ironmike replied 7 months ago.
located under the back of the truck by the spare. They go bad and unexperienced techs think it is the fuel pump
Expert:  Ironmike replied 7 months ago.
go bad many times in salt states. just a heads up to save yourself a head ache
Expert:  Ironmike replied 7 months ago.
I would check the rear differential fluid too. 160k should have been done once.
Expert:  Ironmike replied 7 months ago.
I am big on changing fluids, saves lots of money.. 5.4L engines behave it the oil is changed regularly.