Vibes

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Vibes

Postby Diesel » Mon Jan 27, 2014 4:40 pm

Recently I have been getting vibes from what feels could be anything from the transmission back to the rear. Today I had both tires balanced out back and that did a little. Feels like when I am accelerating even on the highway, there is a vibration that occurs. Driveshaft ujoints seem tight. Could this be something wore out in the transmission? The rear has leaking wheel seals but I keep up with the fluid loss which is a tiny amount and it hasn't gone low ever. What could it be? As simple as a transmission mount? Is there a preferred replacement?
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Re: Vibes

Postby PToombs » Mon Jan 27, 2014 7:04 pm

Sounds like a u-joint to me. Pull the drive shaft and flex each joint from stop to stop and see if there are any stiff spots. Or pull the caps off and look for marks or grooves in the yoke.
pete

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Re: Vibes

Postby ellis93 » Mon Jan 27, 2014 8:11 pm

X2 on the joints.....
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: Vibes

Postby sloppy2nds000 » Tue Jan 28, 2014 4:59 am

my failing torque converter made my truck feel like it had a wheel out of balance. i put up with it for a year but just replaced it cause it finally quit working. no more shimmy. so that is kinda nice.
you better pull your drive shafts and clean and inspect and lube your u-joints like the other guys suggested, check your wheel bearings and retorque them if need be. as well as check your ball joints/king pins for slop. if all that stuff is ok it might be time to loose sleep and cry over having to drop the tranny and get a new tc.
91 w250 a518 regular cab plow truck, bone stock, just over 100k, 1 ton front springs and air bags in the rear
94.5 f350 crew cab long bed powerstroke, 100hp beans injectors, solid state chip with 6 pos switch, adrenaline HPOP, about to turn 300k, summer work truck.
1970 bmw 2002, inka orange
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Re: Vibes

Postby Diesel » Tue Jan 28, 2014 7:48 am

sloppy2nds000 wrote:my failing torque converter made my truck feel like it had a wheel out of balance. i put up with it for a year but just replaced it cause it finally quit working. no more shimmy. so that is kinda nice.
you better pull your drive shafts and clean and inspect and lube your u-joints like the other guys suggested, check your wheel bearings and retorque them if need be. as well as check your ball joints/king pins for slop. if all that stuff is ok it might be time to loose sleep and cry over having to drop the tranny and get a new tc.


I will take a look at the U's again.

On to the Torque Converter - did you just swap it out or did you rebuild the transmission too? My transmission works wonderfully right now. What did you swap in its place? Assuming a new not rebuilt converter?
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Re: Vibes

Postby Diesel » Tue Jan 28, 2014 3:49 pm

As an update - I am fairly sure its the trans. When I am on the gas accelerating I get the vibes. Off the gas the truck rolls smooth. Get back on the gas and it vibes. I figure if it was the shaft or the rear end it would vibe off the throttle too.
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Re: Vibes

Postby PToombs » Tue Jan 28, 2014 5:52 pm

Still say it's a joint. My .02.
pete

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Re: Vibes

Postby matthewh » Tue Jan 28, 2014 6:08 pm

PToombs wrote:Still say it's a joint. My .02.

I do ad well, sounds like textbook bad u-joint. If these trucks weren't so noisy, you'ld probably notice a noise when you let off as well.

Check the easy stuff first. Does your truck have a carrier bearing, if that's bad would cause a vibration as well.

Just my opinion, I'm not a mechanic, nor did I stay at a holiday in last night ;)
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Re: Vibes

Postby Diesel » Tue Jan 28, 2014 7:40 pm

Alright then gents. The driveshafts coming out and two new spicers going in.
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Re: Vibes

Postby Sutter1stgen » Tue Jan 28, 2014 11:23 pm

While the drive line is out, check your pinion for play. If your truck is 4wd check the fixed yoke at the t-case for play. If chased vibrations before and these have been little places I overlooked, yet the problem.
Eric

91'w250 with a new pump. This one doesn't chase itself around in a circle.
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Re: Vibes

Postby sloppy2nds000 » Wed Jan 29, 2014 5:29 am

sutter, how much end play should there be at the pinions? i should check mine today, i know ive got lash, but i didnt check the end play. no leaks at the seals yet so thats good.

diesel, you should hope its not the tc, changing the tc in the middle of winter sucks, even with a shop. i put in a stock tc and i put in a rebuild kit and both bands. i did this because i needed my truck back on the road plowing snow. i plan to build a heavy duty tranny this summer and get a proper tc. i have no idea what tc im going with as of yet. my truck is a dedicated plow truck. so i have to do some home work before i decide what tc to run, but im probably going with a goerend or possibly a florida torque, the florida is half the price of the goerend and sounds to be the exact same build, but i intend to call and do some more questioning before i commit to anything. i called all the tc builders that i could find. goerend was the most knowledgeable. but all were mostly clueless as to what to do with a plow truck application, they all had theories, but then said it could go either way and that they werent totally sure. at least goerend offers a free re-stall for thier tc, but i do not want to pull this tranny for the tc ever again. that free option doesnt entice me in the least. i want it right the first time. especially for the amount of coin any of these builders are demanding for their products.
sutter gave me the best advice, and thanks again for that sutter. so in the end and in my opinion, a tc is a tc and it boils down to how its built as to how well it will likely work. they all use the same parts but some choose not to use some parts. goerend offered all the best parts in their unit for 650. but as far as knowledge and a general knowledge of physics and engineering principles, nobody blew my skirt up. they all said we just build them for drag and towing. i got the feeling you'd have to talk to the engine/driveline building guru's to get any real world knowledge, but who are they? and why would they talk to me? im not a potential customer, i cant afford to be. but they at least have the trial and error experience from the years of testing and building.
if you know what youre looking for, youre all set when you call the tc companies, so long as youre not a dedicated plow truck. i did offer(jokingly) a couple of them to help them with some r&d for plowing applications, but i think i was the first person to ever call most of the tc builders on such an application.
but in the end i intend to spend a fair amount of money on all the best parts and i expect to have the best tranny i can afford. and it better last a long time. buy the best and expect the best. and when it fails call and complain. and hopefully get more better stuff.
91 w250 a518 regular cab plow truck, bone stock, just over 100k, 1 ton front springs and air bags in the rear
94.5 f350 crew cab long bed powerstroke, 100hp beans injectors, solid state chip with 6 pos switch, adrenaline HPOP, about to turn 300k, summer work truck.
1970 bmw 2002, inka orange
1987 vw golf gti, 2.0l conversion
1994 bmw 525i
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Re: Vibes

Postby Diesel » Wed Jan 29, 2014 1:00 pm

Got me some good USA u-joints. Just don't want to round off the bolts - 8mm is loose so i 9/32. 1/4 doesn't fit. What size am I supposed to have!?
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Re: Vibes

Postby ellis93 » Wed Jan 29, 2014 2:35 pm

I always use a 6point 5/16ths box end wrench.
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: Vibes

Postby Sutter1stgen » Wed Jan 29, 2014 9:09 pm

ellis93 wrote:I always use a 6point 5/16ths box end wrench.

BOOM!!! This right here. Lol.

Check the axle pinion for up and down play. I've been told any is unacceptable. At the t case end I'm sure there is a tolerable amount. I'm no expert at this is just what I've been told.
Eric

91'w250 with a new pump. This one doesn't chase itself around in a circle.
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Re: Vibes

Postby Diesel » Thu Jan 30, 2014 9:53 am

HEY THANKS! I will go pickup a little 5/16th 6 point box right now!
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