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Posted: 4/25/2016 10:42:15 AM EDT
Truck is a 1990 K5, 6" lift, np205 and 44 front axle.
Long story short, lost caps on front driveshaft u joint, replaced it. Since then I have had a crazy vibration/noise I cant pinpoint. (video below) Asking around about this issue someone pointed out I dont have a CV at the transfer case end... Now this wasnt an issue at all the whole time I have owned the truck but they have a point... Here is what I have: (more or less) 
Here is what I probably need: (yes I know thats a year driveshaft) 
Now, could I just buy this and a ujoint and call it a day? here is the video of the noise... It feels like there is something seriously loose like washers or marbles or change or something in the cab. 
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Posted: 4/25/2016 10:49:01 AM EDT
[#1]
Sounds to me like something is hitting or rubbing. I'd take a quick look and see if any of the new parts are not clearance enough.
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Posted: 4/25/2016 10:50:46 AM EDT
[#2]
Quote HistoryQuoted:
Sounds to me like something is hitting or rubbing. I'd take a quick look and see if any of the new parts are not clearance enough. nah nothing hitting, its been this configuration for years now. its a definite metallic "ggggrrrrrrrrrrrrrrr" kind of sound. edit: the only thing that could be hitting would maybe be the linkage. Ill double check it today if I can. im thinking its driveline vibe transferring up to the case or splines on a shaft barely touching the edge of something while it is turning, that kind of thing. |
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Posted: 4/25/2016 1:21:24 PM EDT
[#3]
Is the slip yoke phased properly?
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Posted: 4/25/2016 1:24:27 PM EDT
[#4]
When I damaged my k5 driveshaft I damaged the transfer case.
Had the same issue, new transfer case solved it... Np208? |
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Posted: 4/25/2016 2:04:41 PM EDT
[#5]
Quote HistoryQuoted:
Is the slip yoke phased properly? Presuimg. It's never been apart. I've rotated 180 a few times just for kicks, no change at all. |
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Posted: 4/25/2016 2:05:29 PM EDT
[#6]
Quote HistoryQuoted:
When I damaged my k5 driveshaft I damaged the transfer case. Had the same issue, new transfer case solved it... Np208? 205. I haven't had it anywhere to damage it. This all started when I changed the ujoint closest to the transfer case. Never had any problems before. |
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Posted: 4/25/2016 3:55:30 PM EDT
[#7]
Why not remove the shaft, see if the noise goes away, and if so take the shaft into a driveshaft place and have them balance it?
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Posted: 4/25/2016 4:11:02 PM EDT
[#8]
Quote HistoryQuoted:
Why not remove the shaft, see if the noise goes away, and if so take the shaft into a driveshaft place and have them balance it? Noise still can occur going downhill on a steep grade at highway speed but never on level ground at any speed as soon as the shaft is back in its back just like in the video. I live in a small town and I don't know of a driveline place in the area. That's why I was asking about the part in op. It was mentioned to me that the tcase u joint is getting stress from two different angles which could be causing vibes. |
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Posted: 4/25/2016 4:15:20 PM EDT
[#9]
Quoted:
Truck is a 1990 K5, 6" lift, np205 and 44 front axle. Long story short, lost caps on front driveshaft u joint, replaced it. Since then I have had a crazy vibration/noise I cant pinpoint. (video below) Asking around about this issue someone pointed out I dont have a CV at the transfer case end... Now this wasnt an issue at all the whole time I have owned the truck but they have a point... Here is what I have: (more or less) http://i1128.photobucket.com/albums/m493/savage022/shaft_zpsx5vpvcmm.jpg Here is what I probably need: (yes I know thats a year driveshaft) http://i1128.photobucket.com/albums/m493/savage022/DSC_0249-1_zpsoga6ee0f.jpg Now, could I just buy this and a ujoint and call it a day? here is the video of the noise... It feels like there is something seriously loose like washers or marbles or change or something in the cab.  https://www.youtube.com/watch?v=N2tmQ6gPYR0The truck in your photo has an incorrect driveline angle. The ujoint should match the rear of the transfer case, same angle. No angle at all and your joint will not lube and may vibrate. Your photo shows a constant velocity or double cardan joint. Take your truck to a driveline shop and have them make a proper tube for it and use name brand ujoints. There may be a pin that fell out and is inside the ujoint cap causing noise and imbalance. I have had a pro shop do it to me once. They also re-tubed it too short. Never let the new guy build driveshafts. 
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Posted: 4/25/2016 4:20:53 PM EDT
[#10]
"205. I haven't had it anywhere to damage it.
This all started when I changed the ujoint closest to the transfer case. Never had any problems before." I'd look at the u-joint closest to the transfer case.  Logic dictates that if it wasn't doing it before and is now, you did it.
Pull the caps off your new u-joint and see if all the needle bearings are there. Was the part sealed when you got it from the parts house? Make sure it rolls smoothly. Did you grease it? |
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Posted: 4/25/2016 4:29:55 PM EDT
[#11]
Quote HistoryQuoted:
Noise still can occur going downhill on a steep grade at highway speed but never on level ground at any speed as soon as the shaft is back in its back just like in the video. I live in a small town and I don't know of a driveline place in the area. That's why I was asking about the part in op. It was mentioned to me that the tcase u joint is getting stress from two different angles which could be causing vibes. Quote HistoryQuoted:
Quoted:
Why not remove the shaft, see if the noise goes away, and if so take the shaft into a driveshaft place and have them balance it? Noise still can occur going downhill on a steep grade at highway speed but never on level ground at any speed as soon as the shaft is back in its back just like in the video. I live in a small town and I don't know of a driveline place in the area. That's why I was asking about the part in op. It was mentioned to me that the tcase u joint is getting stress from two different angles which could be causing vibes. Wait, the same noise/vibration happens sans driveshaft? It's not the driveshaft. |
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Posted: 4/25/2016 4:31:56 PM EDT
[#12]
if your thinking of upgrading the driveshaft check out tom woods driveshafts.
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Posted: 4/25/2016 4:37:45 PM EDT
[#13]
Quote HistoryQuoted:
"205. I haven't had it anywhere to damage it. This all started when I changed the ujoint closest to the transfer case. Never had any problems before." I'd look at the u-joint closest to the transfer case. Logic dictates that if it wasn't doing it before and is now, you did it.
Pull the caps off your new u-joint and see if all the needle bearings are there. Was the part sealed when you got it from the parts house? Make sure it rolls smoothly. Did you grease it? yes to everything. I put the ujoint in, no pins fell to the side. its greased. part was new and in good condition. part in red, exactly what I am thinking. its just the rule of working on vehicles I just cant figure it out. 
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Posted: 4/25/2016 4:41:41 PM EDT
[#14]
Quote HistoryQuoted:
Wait, the same noise/vibration happens sans driveshaft? It's not the driveshaft. Quote HistoryQuoted:
Quoted:
Quoted:
Why not remove the shaft, see if the noise goes away, and if so take the shaft into a driveshaft place and have them balance it? Noise still can occur going downhill on a steep grade at highway speed but never on level ground at any speed as soon as the shaft is back in its back just like in the video. I live in a small town and I don't know of a driveline place in the area. That's why I was asking about the part in op. It was mentioned to me that the tcase u joint is getting stress from two different angles which could be causing vibes. Wait, the same noise/vibration happens sans driveshaft? It's not the driveshaft. it only happens at fast highway speed going downhill and coasting 2wd. my tranfer case has the correct fluid level in it. This part makes me think its just something loose rattling around and the normal shaft vibes amplify it. I dont think anything inside the case could be damaged or out of commission, I have not offroaded the truck but one time and I never used 4wd and it was just dirt road. I am thinking the linkage could be a tad loose and is going to be my next inspection, it is alot of cotter pins etc so, ill try and rule it all out. I had to pull the transfer case last summer to replace the seal in the adapter between transmission and transfer case. Transmission fluid---->tcase--->ground. |
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Posted: 4/25/2016 4:42:08 PM EDT
[#15]
Quote HistoryQuoted:
if your thinking of upgrading the driveshaft check out tom woods driveshafts. for sure! too pricey right now though. |
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Posted: 4/27/2016 8:05:25 AM EDT
[#16]
Quote HistoryQuoted:
it only happens at fast highway speed going downhill and coasting 2wd. my tranfer case has the correct fluid level in it. This part makes me think its just something loose rattling around and the normal shaft vibes amplify it. I dont think anything inside the case could be damaged or out of commission, I have not offroaded the truck but one time and I never used 4wd and it was just dirt road. I am thinking the linkage could be a tad loose and is going to be my next inspection, it is alot of cotter pins etc so, ill try and rule it all out. I had to pull the transfer case last summer to replace the seal in the adapter between transmission and transfer case. Transmission fluid---->tcase--->ground. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Why not remove the shaft, see if the noise goes away, and if so take the shaft into a driveshaft place and have them balance it? Noise still can occur going downhill on a steep grade at highway speed but never on level ground at any speed as soon as the shaft is back in its back just like in the video. I live in a small town and I don't know of a driveline place in the area. That's why I was asking about the part in op. It was mentioned to me that the tcase u joint is getting stress from two different angles which could be causing vibes. Wait, the same noise/vibration happens sans driveshaft? It's not the driveshaft. it only happens at fast highway speed going downhill and coasting 2wd. my tranfer case has the correct fluid level in it. This part makes me think its just something loose rattling around and the normal shaft vibes amplify it. I dont think anything inside the case could be damaged or out of commission, I have not offroaded the truck but one time and I never used 4wd and it was just dirt road. I am thinking the linkage could be a tad loose and is going to be my next inspection, it is alot of cotter pins etc so, ill try and rule it all out. I had to pull the transfer case last summer to replace the seal in the adapter between transmission and transfer case. Transmission fluid---->tcase--->ground. Only happens in 2wd coasting? Sure sounds like you lost a pinion bearing to me. You should still have a cardan joint next to the tcase though. |
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Posted: 4/27/2016 8:16:06 AM EDT
[#17]
coloradok5.com
You will find everything you want to know and more. |
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Posted: 4/27/2016 8:22:44 AM EDT
[#18]
Yoke lost a few spines? That is what it sounds like to me or something down the line transmission , transfer case.
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Posted: 4/27/2016 8:58:18 AM EDT
[#19]
Quote HistoryQuoted:
Only happens in 2wd coasting? Sure sounds like you lost a pinion bearing to me. You should still have a cardan joint next to the tcase though. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Quoted:
Why not remove the shaft, see if the noise goes away, and if so take the shaft into a driveshaft place and have them balance it? Noise still can occur going downhill on a steep grade at highway speed but never on level ground at any speed as soon as the shaft is back in its back just like in the video. I live in a small town and I don't know of a driveline place in the area. That's why I was asking about the part in op. It was mentioned to me that the tcase u joint is getting stress from two different angles which could be causing vibes. Wait, the same noise/vibration happens sans driveshaft? It's not the driveshaft. it only happens at fast highway speed going downhill and coasting 2wd. my tranfer case has the correct fluid level in it. This part makes me think its just something loose rattling around and the normal shaft vibes amplify it. I dont think anything inside the case could be damaged or out of commission, I have not offroaded the truck but one time and I never used 4wd and it was just dirt road. I am thinking the linkage could be a tad loose and is going to be my next inspection, it is alot of cotter pins etc so, ill try and rule it all out. I had to pull the transfer case last summer to replace the seal in the adapter between transmission and transfer case. Transmission fluid---->tcase--->ground. Only happens in 2wd coasting? Sure sounds like you lost a pinion bearing to me. You should still have a cardan joint next to the tcase though. No, here are the two scenarios. -shaft installed, 4wd high, above 10 or 15 mph or so. In 2wd with shaft in going downhill (steep grade) at highway speeds. A pinion bearing does seem plausible. There is no slack in the driveline but possible weepage. |
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Posted: 4/27/2016 9:02:19 AM EDT
[#20]
Quote HistoryQuoted:
coloradok5.com You will find everything you want to know and more. been a member there for years. 9/10 I can come here and get more responses and help. sucks but its true. |
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Posted: 4/27/2016 9:04:00 AM EDT
[#21]
Quote HistoryQuoted:
Yoke lost a few spines? That is what it sounds like to me or something down the line transmission , transfer case. It definetely sounds like a spine/grind sound to me too. my thought was to place my camera closer to the transfer case then close to the front axle, see if anything is louder one way or the other. |
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Posted: 4/27/2016 9:29:52 AM EDT
[#22]
One other thought...
4LO N 2wd 4 High The pull from 2wd to high isnt very far, sometimes I think it seems to short. it is very fluid and goes right into 4 high though. Does this sound right? |
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Posted: 4/27/2016 8:33:24 PM EDT
[#23]
Quote HistoryQuoted:
One other thought... 4LO N 2wd 4 High The pull from 2wd to high isnt very far, sometimes I think it seems to short. it is very fluid and goes right into 4 high though. Does this sound right? On a 205 yes, I'd also check the output bearings in the T case. Question, hubs in or out? |
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Posted: 4/28/2016 7:41:04 AM EDT
[#24]
Quote HistoryQuoted:
On a 205 yes, I'd also check the output bearings in the T case. Question, hubs in or out? Quote HistoryQuoted:
Quoted:
One other thought... 4LO N 2wd 4 High The pull from 2wd to high isnt very far, sometimes I think it seems to short. it is very fluid and goes right into 4 high though. Does this sound right? On a 205 yes, I'd also check the output bearings in the T case. Question, hubs in or out? The noise in question occurs in both hub positions. It seems to have no effect on it at all. |
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Posted: 4/28/2016 8:12:58 AM EDT
[#25]
Quote HistoryQuoted:
The noise in question occurs in both hub positions. It seems to have no effect on it at all. Quote HistoryQuoted:
Quoted:
Quoted:
One other thought... 4LO N 2wd 4 High The pull from 2wd to high isnt very far, sometimes I think it seems to short. it is very fluid and goes right into 4 high though. Does this sound right? On a 205 yes, I'd also check the output bearings in the T case. Question, hubs in or out? The noise in question occurs in both hub positions. It seems to have no effect on it at all. Can you verify that the front hubs are in fact released and not making the front axle turn, just trying to narrow down where the vibration/ noise is coming from. ETA, I've had front hubs hang up and cause the front axle to spin causing the same issue you are describing. |
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Posted: 4/28/2016 8:14:34 AM EDT
[#26]
Double tap.
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Posted: 4/28/2016 9:10:43 AM EDT
[#27]
Quote HistoryQuoted:
Can you verify that the front hubs are in fact released and not making the front axle turn, just trying to narrow down where the vibration/ noise is coming from. ETA, I've had front hubs hang up and cause the front axle to spin causing the same issue you are describing. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
One other thought... 4LO N 2wd 4 High The pull from 2wd to high isnt very far, sometimes I think it seems to short. it is very fluid and goes right into 4 high though. Does this sound right? On a 205 yes, I'd also check the output bearings in the T case. Question, hubs in or out? The noise in question occurs in both hub positions. It seems to have no effect on it at all. Can you verify that the front hubs are in fact released and not making the front axle turn, just trying to narrow down where the vibration/ noise is coming from. ETA, I've had front hubs hang up and cause the front axle to spin causing the same issue you are describing. Good question. I guess I'd have to tinker with them to verify though. I can't remember, if I have one locked and not the other will the driveshaft turn? I can't remember if it will just put power to the unlocked hub or to the locked one. I'll try here in a bit and see what I get. I think the hubs are okay though. |
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Posted: 4/28/2016 12:19:22 PM EDT
[#28]
alright. I locked in the passenger hub.
spun the front shaft, I could hear the hub click in. Tells me it was unlocked. Ill repeat for the other side. Other side, same thing, clicked in. I was shaking and shoving everything I could, nothing seems lose. pinion seems just fine too. I did find one big concern though, the angle of that shaft the distance between the yoke and the ubolt holding the ujoint cap on is like 1/8" of an inch. Its real small. To me it seems like if the suspension dropped just a tad there would be contact. Im not saying thats the cause of all this but its certainly a concern. this leads me back to my question in OP What is stopping me from buying this adding a ujoint and seeing where I am with all this? 
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Posted: 4/28/2016 1:23:07 PM EDT
[#29]
Quote HistoryQuoted:
alright. I locked in the passenger hub. spun the front shaft, I could hear the hub click in. Tells me it was unlocked. Ill repeat for the other side. Other side, same thing, clicked in. I was shaking and shoving everything I could, nothing seems lose. pinion seems just fine too. I did find one big concern though, the angle of that shaft the distance between the yoke and the ubolt holding the ujoint cap on is like 1/8" of an inch. Its real small. To me it seems like if the suspension dropped just a tad there would be contact. Im not saying thats the cause of all this but its certainly a concern. this leads me back to my question in OP What is stopping me from buying this adding a ujoint and seeing where I am with all this? http://i1128.photobucket.com/albums/m493/savage022/cardone_zpsi1gikorg.jpg You'll have to have a shaft built with a complete double cardan joint. It's not just a matter of the part pictured and another u joint. There is a bit more to it......... 
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Posted: 4/28/2016 1:55:17 PM EDT
[#30]
I see your point and concede.
Next option then is just a new driveshaft altogether then huh? Honestly I feel like it's something in the shaft itself. I know I can get the vibe/noise in 2wd downhill at highway speed but I could live with that vs 10mph and up regardless. eyeballing this now. yes the year is right. link |
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Posted: 5/5/2016 4:40:21 PM EDT
[#31]
new unjoints in the front shaft. same issue.
Has to be a bearing in the transfer case at this point. How hard is the front output shaft bearing to swap? Its looking like the case has to be taken apart... 
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Posted: 5/5/2016 6:32:51 PM EDT
[#32]
What exactly happen when you lost the u-joint caps, did it hit the ground and are your sure the drive shaft is in phase and balanced?
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Posted: 5/5/2016 8:27:14 PM EDT
[#33]
Quote HistoryQuoted:
What exactly happen when you lost the u-joint caps, did it hit the ground and are your sure the drive shaft is in phase and balanced? it rattled in the tcase yoke, banging on the floorboard. not awful though, i wasnt going fast just enough to get a thump... thump... thump... the two halves have never been apart so i dont think thats my problem. No way for me to tell if it is balanced. I have to presume so since I never had a problem up unto this point. I cant see any damage to the driveshaft itself at all. |
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