What Do You Think It Is??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*Zilverado* · 09-27-2003, 11:22 PM

So I noticed a bit of a noise tonight coming from some where in the drive line - I think. It was a kinda "whirring" or "whining" noise. More noticable while coasting or breaking than accelerating. There was also a little vibration, but I'm not sure that this hasn't been there before.

I was thinking u-joints (rear one is fairly new), but there was no "clunking" when getting back on the gas.

I have a split driveshaft and I know the carrier bearing housing (the rubber part) is kinda worn. I haven't been under the truck lately to check the drive line, and tonight I got home too late to really care - so I thought I'd ask the experts and then go look around when I get the time.

Thanks.

the baron · 09-28-2003, 05:39 AM

U-joint , definitly.

I had the same noise in my drive shaft , but most of the time , it was when I accelerated.

Fix it before it breaks completely ( I've been there ! I thought it could wait a little , I went back home truckless , the rear part of that drive shaft was stuck between the bed and the RR axle... )

Really easy to check , crawl under your truck and check for loosening , you can even see it with the eye

The Baron

*Zilverado* · 09-29-2003, 06:12 PM

Thanks Baron,

I spent a little time under the truck yesterday (until it rained)

. There was some slight movement in the front u-joint - not rotational movement, but I could move it up and down. Now it was difficult to tell if it was the u-joint moving or the shaft going into the back of the tranny, but I'm suspecting the u-joint.

The rubber "housing" of the carrier bearing is getting looser as well. I can move it around quite a bit - I'd say a good 1/4" all around. I assume this is not normal either.

Anyway, hopefully I'll get a chance to look at these things soon. Don't want to drop a drive shaft while flying down the road

.

crackajacka · 10-01-2003, 12:00 AM

i had the original ujoints in my drive shaft for the longest then i decided to replace them after i couldnt stand the humming anymore. and a week later the caps go flying off goin down the interstate doing 80 sounds like ive got a flat or something so i pull over look at all 4's, rev it up in neutral then acts fine then i get back on and drive for about a mile then it starts vribrating again and i think what the hell, but to make a long story short, get some high quality ones.

bigd65 · 10-01-2003, 08:48 AM

you lucked out, Christmas morning, i had a U-JOINT cap come of. i slammed on the brakes , due to that loud clunk, sent mr spinning in a donut in the middle of the road. glad it was early Christmas morning and there was no traffic. anyways, i ended up slidding down a ditch at about 70 mph and stopped abot 5 ft from a LARGE culvert. cracke the tranny case tail shaft and all the way around the bell housing. and they were new U-JOINTS. i will not use the U-JOINTS with the clips on the inside anymore, the ones that go on the outside at the end of the caps are the ones i use from now on.

*Zilverado* · 10-01-2003, 01:55 PM

Thanks for all the horror stories guys

I certainly hope that I get a chance to do the work shortly. I've been out of town most of the last month and a half. So when I get home to stay tomorrow, I'll have to dig into it. My inlaws want me to haul some rock for them before winter comes (my Father-in-Law's truck is just a F150

)... so I better get this looked at before taking on some big loads.

Thanks again

09-27-2003, 11:22 PM	#1
Zilverado Account Suspended Join Date: Nov 2002 Location: Winnipeg, Manitoba, Canada Posts: 798	What Do You Think It Is??? So I noticed a bit of a noise tonight coming from some where in the drive line - I think. It was a kinda "whirring" or "whining" noise. More noticable while coasting or breaking than accelerating. There was also a little vibration, but I'm not sure that this hasn't been there before. I was thinking u-joints (rear one is fairly new), but there was no "clunking" when getting back on the gas. I have a split driveshaft and I know the carrier bearing housing (the rubber part) is kinda worn. I haven't been under the truck lately to check the drive line, and tonight I got home too late to really care - so I thought I'd ask the experts and then go look around when I get the time. Thanks.

09-28-2003, 05:39 AM	#2
the baron Registered User Join Date: Mar 2003 Location: Liège , Belgium Posts: 263	U-joint , definitly. I had the same noise in my drive shaft , but most of the time , it was when I accelerated. Fix it before it breaks completely ( I've been there ! I thought it could wait a little , I went back home truckless , the rear part of that drive shaft was stuck between the bed and the RR axle... ) Really easy to check , crawl under your truck and check for loosening , you can even see it with the eye The Baron __________________ 1982 Suburban 2WD , 260ci Olds engine,TH400 , will get a 1979 front clip , might be ready in ... 2016 1985 Chevy Van ( 305/350 ) , "Kellogg" equipped , my actual D.D. 1960 Girl Friend , frame still good , body has some dents

10-01-2003, 12:00 AM	#4
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	i had the original ujoints in my drive shaft for the longest then i decided to replace them after i couldnt stand the humming anymore. and a week later the caps go flying off goin down the interstate doing 80 sounds like ive got a flat or something so i pull over look at all 4's, rev it up in neutral then acts fine then i get back on and drive for about a mile then it starts vribrating again and i think what the hell, but to make a long story short, get some high quality ones. __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

10-01-2003, 08:48 AM	#5
bigd65 Registered User Join Date: Mar 2000 Location: Clute, TX. Posts: 1,935	you lucked out, Christmas morning, i had a U-JOINT cap come of. i slammed on the brakes , due to that loud clunk, sent mr spinning in a donut in the middle of the road. glad it was early Christmas morning and there was no traffic. anyways, i ended up slidding down a ditch at about 70 mph and stopped abot 5 ft from a LARGE culvert. cracke the tranny case tail shaft and all the way around the bell housing. and they were new U-JOINTS. i will not use the U-JOINTS with the clips on the inside anymore, the ones that go on the outside at the end of the caps are the ones i use from now on. __________________ 2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe

09-29-2003, 06:12 PM	#3
Zilverado Account Suspended Join Date: Nov 2002 Location: Winnipeg, Manitoba, Canada Posts: 798	Thanks Baron, I spent a little time under the truck yesterday (until it rained) . There was some slight movement in the front u-joint - not rotational movement, but I could move it up and down. Now it was difficult to tell if it was the u-joint moving or the shaft going into the back of the tranny, but I'm suspecting the u-joint. The rubber "housing" of the carrier bearing is getting looser as well. I can move it around quite a bit - I'd say a good 1/4" all around. I assume this is not normal either. Anyway, hopefully I'll get a chance to look at these things soon. Don't want to drop a drive shaft while flying down the road .

10-01-2003, 01:55 PM	#6
Zilverado Account Suspended Join Date: Nov 2002 Location: Winnipeg, Manitoba, Canada Posts: 798	Thanks for all the horror stories guys I certainly hope that I get a chance to do the work shortly. I've been out of town most of the last month and a half. So when I get home to stay tomorrow, I'll have to dig into it. My inlaws want me to haul some rock for them before winter comes (my Father-in-Law's truck is just a F150 )... so I better get this looked at before taking on some big loads. Thanks again



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