Question about Ford F-150

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I am still having vibration problems with my 93 ford F150 4.9L

I am still having vibration problems with my 93 ford F-150 short bed truck cause i had the rear end checked out and it is good and i had new U joints press in to the drive shaft and the drive shaft is good as well. But it is still has vibration problems cause it was doing it around 40 or 45 mph but now it is doing it at any speed now and it is starting to drive me crazy and i would like to know what else could cause it to have the vibration and could it be in the motor or what could it be cause i could sure use some help please!!!

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  • 178 Answers

This sounds crazy but I had it happen once. Have your wheels balanced. On my truck, I had a slight bend in one of my wheels. I never felt it at low speed but as I approached highway speeds, it could feel a vibration. I had everything checked out and it ended up being a slightly bent wheel.
I hope that helps.
Semper Fi,
Z

Posted on May 09, 2017

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6ya6ya
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Posted on Jan 02, 2017

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farroutideas
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SOURCE: 97 dodge ram 1500 shakes at 45 - 55 mph after overdrive

Hi there;
It is possible your O/drive plates inside your transmission are getting worn/burnt. The speed you are discribing is the same speed that the torque convertor "locks up" that puts extra load on the gear that is applied & if it is weak it will slip/viabrate.
I'm not sure it will work but you could go to your local parts store & pick up a can of trasmission seal conditioner & follow the instructions on the can. some times this helps, also make sure you fluid is quite fresh, you might want to have youtransmission fluid "flushed" as this will replace nearly all the fluid in the transmission, this quite often helps any transmission isues with dodges, they are quite particular about the fluid being in good shape. I was a transmission tech for dodge for 4 years & saw a lot of these issues. unfortunatly if it has gone for a while you may need to overhaul your trans.
I also noticed the picture didn't go through for the EGR valve so I am resending it on this comment.

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Good luck I hope this helps.
Please keep me posted.
Farrout!

Posted on Mar 19, 2009

  • 2318 Answers

SOURCE: f 150 4x4

I would suggest to swap the rear tires to the front and see if that helps.
It could also have a shock absorbers problem as well.

Posted on May 14, 2008

  • 202 Answers

SOURCE: 1990 f150 transmission up shift to early

Sounds like the passing gear cable is out of adjustment. Get a shop manual and see what the specs are on how to adjust it properly. It is a pretty simple fix.

Posted on May 27, 2009

  • 90 Answers

SOURCE: How do i change upper ball joint on a 93 f150

Hello there, Most of the upper ball joints on the Fords have to be pressed out and a new one pressed in. You can save your self alot of frustration if you take off the upper control arm and take it and have someone press it such as a local automotive machine shop. you also might be suprised that buying an upper control arm assembly from your ford dealer it comes with a new ball joint installed and in most cases comes with new bushings as well, and it really isn't that much more money. and it will save you alot of aggrevation.

Good Luck and I hope this helps.

Posted on Oct 02, 2009

tragedy lok
  • 266 Answers

SOURCE: There seems to be some play in rear u-joint on my

there should 4 little bolts remove theme,from both end theres no seals on either side just be careful when u pull from tranny side youll loose some fluid (all over u if your not careful)the u joints r pretty simple if u have a vise they have little round clips you pop out then put a socket on the end of the joint hammer away or vise it will pop out one side at a time its hard for me to expain but if u know basic mech it will come to you while your down there loosen the little bolts the shaft will slide right outta the tranny,if u got vibration it might b the weight fell off or off balance you may need to get it machined and rebalanced

Posted on Nov 20, 2009

Testimonial: "To whom it may concern. I appreciate your explanation on the u-joint repair. It was very understandable. Good luck to you. Nick"

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The easiest way is to unbolt the trucks bed and remove it to access the fuel tank.

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I am still having vibration problems?


what is actually vibrating. have you checked the tyres to make sure any are not out of shape (oval) also wheel balancing. hope this helps you out, keep me informed of whats happening and i will repeat will sort it

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I HAVE AN 04 F-150 SC AND THE BED SEEMS TO BOUNCE AROUND QUITE A BIT, TO THE POINT THAT IT ABOUT JARS ME OUT OF MY SEAT. IS THIS SOMETHING THAT CAN BE RECTIFIED OR DO I JUST HAVE TO DEAL WITH IT AMONG...


Hello, for one thing when the 2004 Model came out it had a different frame than the past years and is 9 times more rigid. I have ridden in one and it was not particularly a bad ride. I have read some Web sites about vibration and you should check further into this.

There is a machine called an EVA which is suppose to detect vibrations. When a truck or car is built the normal vibrations are recorded as a standard. Your results are compared to this standard.

Next, there is apparently a "whip" action on the aluminum driveshaft, this can transmit vibration and damage the tailshaft over time. Some companies claim to make a 2 piece steel unit to cure this problem and I believe the 2005's were fitted with 1 piece Factory steel driveshafts later on.

Your tires can be inflated too hard but be within limits. Some of the tires have an operating range of 45 to 65 PSI on the same tire. You just add more air to get the Maximum load capacity, but you really do not need 65 PSI with an empty bed. It just makes the truck ride harder.

While you are at the Dealer for the EVA test, there is a problem on 2004 gas tanks with a dimple causing thin metal and leaks. It is worth checking. You can also get after market shocks or throw some air ride shocks on the back end to soften the ride.

I hope my solutions are very helpful in pointing out what you need and what is available.

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Not sure that there is a diagram, but you may also need bushings, as they wear also, and this may take special tools.

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Who knows without inspecting it, but check the tires. Tires can cause serious problems even if they look ok. Though tires look fine, they can have an almost invisible way of vibrating a vehicle also un balanced tires can cause vibrations

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Noise and vibration above 50 mph


Sounds like front differential or front drive axle issues. Check the front differential gear oil then take er' to the dealership before you end up spending a bunch of $. Most people change their oil frequently in the engine but forget about flushing the transmission fluid and changing oil in the front and rear differentials. I have three Ford 4X4s. Two which really get used hard. The 93 has 311K miles and still runs excellent. Trans and differentials get a fluid change every 25K miles and moble one synthetic engine oil changes every 5k miles.

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