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07-21-2013, 05:26 PM
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Transmission roar
Good evening, my 2005 4.0 auto 4x4 at highway speeds has a rumble that can only be felt while accerating.
It stops when I let off the gas and starts when back on the gas.
I'm guessing it's the tranny.
Any clues to my issue?
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07-30-2013, 03:01 PM
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1YR Lurker
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Re: Transmission roar
I think I may be experiencing a similar issue with my 94 3.0 rwd with a4ld.
Catch is you have a different transmission with more components than mine, so it could be quite different an issue.
Does yours become most noticeable when you are maintaining speed while driving? (i.e. very very light throttle)
Does yours sound kind of like a soft grinding sound, with the vibration being felt through the floorboard?
Does yours go away or change pitch/volume if you turn slightly left or right?
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1994 Ford Ranger XLT 3.0
200k+ miles
Want to make it whole again!
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07-30-2013, 03:56 PM
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Quote:
Originally Posted by aurikai
I think I may be experiencing a similar issue with my 94 3.0 rwd with a4ld.
Catch is you have a different transmission with more components than mine, so it could be quite different an issue.
Does yours become most noticeable when you are maintaining speed while driving? (i.e. very very light throttle)
Does yours sound kind of like a soft grinding sound, with the vibration being felt through the floorboard?
Does yours go away or change pitch/volume if you turn slightly left or right?
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Have noticed any change with slight movement but everything else is spot on.
I'm about to drop the tranny fluid and change the filter.
I'll let you know if it improves
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07-30-2013, 07:24 PM
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Ok, we'll I changed the filter and fuild.
Started with 4 qrts and took it for a test drive.
Difference was noticeable,still has the roar at 60-65
Check the fluid and it was low so I added a quart now the transmission fellers like it did before the change.
Fluid is a touch over the crossmarks.
I'm going to get a suction gun and draw out about half the quart and see how it is.
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07-31-2013, 03:29 PM
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Re: Transmission roar
I changed the fluid in mine when I first started noticing the noise and sensation in the floorboard.
It shifted a little better after the change, but the noise didnt go away (its slowly gotten worse over time too). Its interesting that yours seemed to lessen in severity when you were low on fluid.
The way it sounds really make me think its a bearing of some sort. I put my truck up on jackstands and let it idle so I could get down and listen to where the noise was coming from. I started by listening near both rear wheels (the turning thing i mentioned made me think it was wheel bearings), then listend by the differential, thenf finally moved to the Transmission.
It was most noticable when i was close to the transmission. I'm not too knowledgeable about the internals of it but I'm thinking there must be a bearing in there thats going out.
Hope someone here has experienced this before and fixed it, or has more knowledge than I do and can point us in the right direction.
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1994 Ford Ranger XLT 3.0
200k+ miles
Want to make it whole again!
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08-01-2013, 05:06 PM
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Quote:
Originally Posted by aurikai
I changed the fluid in mine when I first started noticing the noise and sensation in the floorboard.
It shifted a little better after the change, but the noise didnt go away (its slowly gotten worse over time too). Its interesting that yours seemed to lessen in severity when you were low on fluid.
The way it sounds really make me think its a bearing of some sort. I put my truck up on jackstands and let it idle so I could get down and listen to where the noise was coming from. I started by listening near both rear wheels (the turning thing i mentioned made me think it was wheel bearings), then listend by the differential, thenf finally moved to the Transmission.
It was most noticable when i was close to the transmission. I'm not too knowledgeable about the internals of it but I'm thinking there must be a bearing in there thats going out.
Hope someone here has experienced this before and fixed it, or has more knowledge than I do and can point us in the right direction.
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I starting to think that my issue is a bearing too.
I'm taking mine to a shop that specializes in drivetrains and get his opion
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08-02-2013, 10:25 AM
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Re: Transmission roar
Good call. If they have any idea I'd love to hear what they say.
I'm going to try and get under the truck this weekend and pop the driveshaft off and poke around the rear of the transmission. Not sure what I'll be looking at when I get it off, but if nothing else I will learn a little something more about the transmission. maybe get lucky and find the culprit.
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1994 Ford Ranger XLT 3.0
200k+ miles
Want to make it whole again!
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08-02-2013, 10:19 PM
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Ford Truck Driver
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Re: Transmission roar
Did yall rule out your drive shaft carrier bearing and u-joints?
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93 XLT Supercab 4X4 W/Tow Package (only power stuff it's got are the side mirrors, no cruise control or power windows, locks etc)
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08-03-2013, 03:16 PM
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Quote:
Originally Posted by Le Bear
Did yall rule out your drive shaft carrier bearing and u-joints?
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Haven't thought about it to the truth.
Used a suction gun and removed 1/2 of tranny fluid.
Seems to be running good after.
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08-04-2013, 11:11 PM
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Re: Transmission roar
roygray,
So you're saying that when you got your transmission fluid at exactly the right level, the noise went away?
If so, congrats man that was an easy fix!
Don't know if it matters anymore, but I had the driveshaft off this weekend and noticed a couple things, but I'm not sure if they are normal or signs of wear.
First, the driveshaft has about 10-15 degrees of play (when you twist it in neutral with the e-brake on so tires dont move. it doesnt have any play front/back though)
I dropped the driveshaft and tested the differential by twisting the flange, its definitely play in the differential. I can twist the flange 10-15 degrees before It stops dead due to the e-braked wheels. not sure if this is normal or if the pinion needs tightening.
second, if I rotate the driveshaft by hand in neutral and hold one of the tires still, its really hard to move the driveshaft for 1/2 of a revolution, then very easy the second half, and it repeats this hard/easy on every rotation. Doesn't seem to be as difficult if I let it spin the wheel it wants to spin.
Third, the output shaft the driveshaft slips onto can wobble up/down/left/right about a quarter of an inch if I move it with my finger. I'm not sure if the output shaft should have any play like that. It does not go in/out at all however.
unfortunately I didn't have enough time this weekend to take a closer look at the tailshaft housing. the clearance between the output shaft and the housing is too small to see if the seal/etc... was worn, so I'll have to take the whole housing off someday to get a closer look.
The u-joints moved silently and freely, with no play at all however, so I've ruled those out as the culprit. and I have no carrier bearing on this (std. cab).
If you've solved the problem for sure, thats awesome man. I may open a new thread on my issue as it may not be the same as yours.
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1994 Ford Ranger XLT 3.0
200k+ miles
Want to make it whole again!
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08-05-2013, 07:12 AM
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The smartest man alive.
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Quote:
Originally Posted by aurikai
roygray,
So you're saying that when you got your transmission fluid at exactly the right level, the noise went away?
If so, congrats man that was an easy fix!
Don't know if it matters anymore, but I had the driveshaft off this weekend and noticed a couple things, but I'm not sure if they are normal or signs of wear.
First, the driveshaft has about 10-15 degrees of play (when you twist it in neutral with the e-brake on so tires dont move. it doesnt have any play front/back though)
I dropped the driveshaft and tested the differential by twisting the flange, its definitely play in the differential. I can twist the flange 10-15 degrees before It stops dead due to the e-braked wheels. not sure if this is normal or if the pinion needs tightening.
second, if I rotate the driveshaft by hand in neutral and hold one of the tires still, its really hard to move the driveshaft for 1/2 of a revolution, then very easy the second half, and it repeats this hard/easy on every rotation. Doesn't seem to be as difficult if I let it spin the wheel it wants to spin.
Third, the output shaft the driveshaft slips onto can wobble up/down/left/right about a quarter of an inch if I move it with my finger. I'm not sure if the output shaft should have any play like that. It does not go in/out at all however.
unfortunately I didn't have enough time this weekend to take a closer look at the tailshaft housing. the clearance between the output shaft and the housing is too small to see if the seal/etc... was worn, so I'll have to take the whole housing off someday to get a closer look.
The u-joints moved silently and freely, with no play at all however, so I've ruled those out as the culprit. and I have no carrier bearing on this (std. cab).
If you've solved the problem for sure, thats awesome man. I may open a new thread on my issue as it may not be the same as yours.
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Everything you explained is normal man. I would be directing my attention to the transfer case and front drive train.
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4.0 XLT Reg Cab Manual on Manual Transfer
Best truck I've ever owned.
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08-05-2013, 07:35 AM
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Another thing. Try doing everything you did with e brake off, if you didn't already, while up in air. Listen and feel for OBVIOUS hard clunks or hang ups. Don't mistake the normal gear grind. I always second guessed that shit but its ok.
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My money's on the tc
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Best truck I've ever owned.
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08-05-2013, 09:56 AM
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Re: Transmission roar
Thanks for the response Rangers4life!
I'm glad to hear what I've listed is considered normal, but that also confirms my fears that this is something deeper in the trans. Its a daily driver so I dont have the opportunity to take it down for a week to rebuild it I may just go with an m5od swap if I can find one nearby. I prefer manual anyway.
Some of the tests I listed were with the e-brake on, some were with it off. Always in neutral.
With the e-brake off, it spins well enough as long as I am not physically stopping one tire. No specific sound is made aside from what I assume is the normal gear noise, in both directions. it still has that 10-15 degree rotational play with the e-brake off. Its really easy to spin for that first 10-15 degrees. Then, I assume, the teeth of the differential mate and it gets harder to spin as I'm now actually rotating the tire.
For what its worth, I slathered the splines on the driveshaft in some moly grease when I reassembled it last night. Today I noticed on my drive to work that the sound was significantly reduced. Its a short drive however (8 min) and it has been very quiet on a few occasions before.
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1994 Ford Ranger XLT 3.0
200k+ miles
Want to make it whole again!
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08-05-2013, 11:33 AM
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When you have time take the front drive out and spin the tc and listen. Believe me im in the same boat on vehicles bro.
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97 ORIGINAL
4.0 XLT Reg Cab Manual on Manual Transfer
Best truck I've ever owned.
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08-05-2013, 01:22 PM
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Quote:
Originally Posted by RANGERS4LIFE
When you have time take the front drive out and spin the tc and listen. Believe me im in the same boat on vehicles bro.
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When you say spin the tc, I'm assuming that means the torque converter?
I've always had manual trans. So I'm learning alot as I go with this auto. Isn't the torque converter bolted to a plate that would normally be the flywheel on a manual? If so, not sure how to spin it by hand. Sorry if that doesn't make sense, I only have a rudimentary understanding of auto trans.
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1994 Ford Ranger XLT 3.0
200k+ miles
Want to make it whole again!
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