Have a problem with a quick shudder and weering sound that only happens at 50+mph. took truck to transmission shop but they say tranny is strong, but they also say there is definetley a vibration problem. they checked ujoints and they are fine. wondering what this could be. 1998 ranger. 2.5L
sounds just like torque converter shudder.

 

wolf,

i also have vibration over 50 mph, and i've been told it was low fluid in the differential. don't know if you've looked into this yet or not, but just a thought. i haven't gotten into mine yet, but need to do that soon. let me know what you end up finding out. later

Mike

 

Did you guys ever find an answer to the problem?

I am having a vibration issue with my 2000 4x2 regular cab Ranger.

 

What sort of vibration issues are you having?

-When you step on the gas?
-When you step on the brake?
-Feel it in the steering wheel?
-Just all the time?
-At certain speeds?

It could be a number of things, what are your symptoms?

 

There is a vibration/noise that all rear drive vehicles have, It is called the driveline harmonic it usually occurs at around 45-50 mph and is nothing to worry about as long as it sounds about the same. If you can remember what it sounds like you can tell when your u-joints are starting to wear out. You can chase it and chase it!! But you will never get rid of it. It usually occurs when your transmission is turning 1:1 So the 45-50 mph is not exact, it can vary.

 

Peter94,

It happens when I am accelerating fairly hard in the third gear range and then again when I shift from 4th to OD. It then reappears at around 65-70. It is not in the steering wheel at all, just seems to be a general vibration in the entire cab. When cruising in the 65-70 range it makes a real nasty harmonic that seems to shake the whole truck and produce a low humming noise. It only started doing this a few weeks ago. I have had the tires rotated and balanced (the tires are only about a year old) and the problem persists.

 

When was the last time you guys changed out the rear end lube? You guys need to put your truck info in your signature so we all will know exactly what you have, put as much info as you can like model, year, motor,trans, rear end size and gear ratio Just so it is right there at the bottom and easy to see!! The rear axle lube is supposed to be changed every 3000 miles during extended towing above70 degrees and wide open throttle above 45mph!! Unless you have the synthetic 75w140 What that tells me is since I drive 80mph alot and pretty much drive pretty hard even though I don't tow, It is pretty hot down here 90degree air, road is 115 degree radiating up to the rear end so I replace my rear end lube every other oil change, I change my oil at 5k so every 10,000 miles Just to be safe since I plan on keeping my Ranger for a long time!! I use the mity vac pump and pull out the lube from the fill hole, you can only pull out a few ounces at a time I'm working on making a bigger resovoir for it! But if the seal isn't leaking I don't see a reason to take the cover off and risk it leaking!! I also pull out a half quart of my trans fluid every oil change with the mity vac, I use a dedicated hose for the trans only it is as long as my dip stick with a couple of zip tys on it so I don't put it in too far!! It may be overkill but it makes me feel better to know it's got fresh fluid. I also pull all the brake fluid out of the resovoir and refill with fresh fluid before bleeding my brakes, That way I have fresh fluid all the way to my calipers not a **** poor mix of old and fresh!!

 

Tires...Tires...Tires... I just chased the same problem for a month. Like you guys the tires looked just fine on the surface. Took the truck to 3 different shops looking for everything under the sun. One old gruffy guy in a shop said "tires, no question". I still had to be sure so I took out the spare and started swapping each tire one at a time. Sure enough one tire was out of round just enough to shake the whole truck and drive me insane. Got a new tire....Problem solved

02 xlt super 2.3 man.

 

First, remove driveshaft and find any shop, where is possible to balance it to zero, check it's geometry . May be it is bent ore counterweight is lost.

chek for outer shaft of tanny play and rear axe pinion play.

On my aero I had this problem at 80 MPH. I solved this problem installing dual drive shaft

 

I have a 90 ford f150 that is experiencing this same issue. extremejv- did you find the solution? I do have pretty bad pinion yoke play.

Thanks,
Matt

 

It can be a torque converter. If you have any more details and can answer a few questions, I may be able to help. call -888-267-7464
www.accperformance.com
Boss Hog