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Transmission/clutch noise - ADDED
calrugerfan
Member Posts: 18,209 ✭
I replaced my clutch and flywheel awhile ago. More than 10K miles ago.
A couple weeks ago, it started making a weird noise. It sounded like something was vibrating against the truck. It was only noticeable in 4th or 5th gear. Last week, it all of the sudden got really bad and was noticeable in every gear but worse in 4th or 5th.
It only happens when my foot is on the gas. If I am in gear but rolling (i.e. coasting or going down a hill) it doesn't happen.
I've dropped the transmission but I can't see anything obvious.
This is a 99 Dodge Ram Cummins Diesel with a 5 speed manual.
Any ideas?
ADDED: Ok. I feel like an idiot. I thought I changed my oil about a month ago. I distinctly remember going to Autozone and buying the filter plus 3 gallons of oil. I forgot that when I got home, I ended up doing the brakes on my dad's Mercedes. The oil and filter are sitting on the garage floor. My oil pressure hasn't been reading low but I am way overdue for a change. Anyway that it could just be the valves?
A couple weeks ago, it started making a weird noise. It sounded like something was vibrating against the truck. It was only noticeable in 4th or 5th gear. Last week, it all of the sudden got really bad and was noticeable in every gear but worse in 4th or 5th.
It only happens when my foot is on the gas. If I am in gear but rolling (i.e. coasting or going down a hill) it doesn't happen.
I've dropped the transmission but I can't see anything obvious.
This is a 99 Dodge Ram Cummins Diesel with a 5 speed manual.
Any ideas?
ADDED: Ok. I feel like an idiot. I thought I changed my oil about a month ago. I distinctly remember going to Autozone and buying the filter plus 3 gallons of oil. I forgot that when I got home, I ended up doing the brakes on my dad's Mercedes. The oil and filter are sitting on the garage floor. My oil pressure hasn't been reading low but I am way overdue for a change. Anyway that it could just be the valves?
Comments
let us know if the oil change helps...
Unfortunately, with the transmission out, I'm not even sure if I can start my truck to let it warm up.
Did you change the pilot and the throw out bearings?
Are those part of a clutch kit?
Thinking back, the new pilot bearing came with the flywheel. I don't know what a throw out bearing is.
Again, there is only noise when it is in gear and I am on the gas. Coasting in gear equals no noise.
quote:Originally posted by A J Christ
Did you change the pilot and the throw out bearings?
Are those part of a clutch kit?
Yes, if you buy a quality kit.
Do you have a broken/loose engine mount?
quote:Originally posted by calrugerfan
quote:Originally posted by A J Christ
Did you change the pilot and the throw out bearings?
Are those part of a clutch kit?
Yes, if you buy a quality kit.
Do you have a broken/loose engine mount?
I'll check.
Added: are there only 2 on this truck?
I'll check.
I don't know what those things have for mounts, but also check the condition of the rubber insulator(s). The engine mounts on big trucks will do what your truck is doing when the engine mounts start to fail. It throws the driveline out of alignment, and causes driveline vibaration.
Check your U-joints for slop too. The bearings inside may be shot.
And the carrier bearing, if your driveshaft has one.
Changing the oil shouldn't cure the problem.
I vote a motor/trans mount, or a mid-driveline bearing, mount, or exhaust. But usually exhaust fusses in lower gears first/most.
Whoa...I'm just absolutely stunned you are able to drop a transmission, but don't know what a throw-out bearing is!! How could that be????? (or did I misread something?)
[:0][:0][?][?]
I have always been very mechanically inclined but never had anybody to teach me. My paternal grandfather was a master mechanic as well as a master carpenter but he died when I was about a year old. I am very good at seeing how things come apart and go back together or following instructions in a Haynes manual. When it comes to actual working knowledge of how all the pieces operate, my knowledge is severely lacking. I have a great uncle that still works on cars at 90 years old but for the most part his explanations consist of "it has a doomaflachy that goes into a thingamajig like this (makes a hand gesture) and... well, you'll see when you take it apart."
Not trying to be rude, or disrespectful, honest! Just surprised. I've pulled a bunch of transmissions and the whole clutch assembly (including throw-out) is key to mating the motor back up to the trans, that's all.
No offense taken. I was just explaining why I don't know terminology.
If it aint broke dont fix it. If you take it apart every time it makes a noise you wont be driving it much, and will be out a lot of time and money.
It may not be totally broken but it sure as heck wasn't right.
quote:Originally posted by Amish
If it aint broke dont fix it. If you take it apart every time it makes a noise you wont be driving it much, and will be out a lot of time and money.
It may not be totally broken but it sure as heck wasn't right.
And that's the time to fix it.
You ain't been on a thrill ride 'til you've lost a front u-joint and pogo'd the truck.
http://www.cumminsforum.com/forum/98-5-02-performance-parts-discussion/319847-two-piece-drive-shaft-out.html
Also read this one it says you can put the center bearing on backwards.
http://www.dieseltruckresource.com/dev/driveshaft-center-bearing-replacement-t240633.html
quote:Originally posted by calrugerfan
quote:Originally posted by Amish
If it aint broke dont fix it. If you take it apart every time it makes a noise you wont be driving it much, and will be out a lot of time and money.
It may not be totally broken but it sure as heck wasn't right.
And that's the time to fix it.
You ain't been on a thrill ride 'til you've lost a front u-joint and pogo'd the truck.
I actually seen the results of that in a 63 student school bus...
Talk 'bout a mess... Fortunately there were only a couple students on-board when it pogo'd.