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#68904 11/20/2006 5:19 PM | Joined: Jul 2005 Posts: 227 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 227 | Hello. Over the weekend I noticed that my 63 c10 is starting to make a clanking noise under acceleration. drive train is sbc305 and th350. on several drives I have noticed this noise at different rpms and gears. only happens while in gear not while reving in park. noise will stop if i take my foot off the pedal and coast. is there something wrong with my transmission? fluid level is good. it is shifting fine. im lost here but would like to correct this problem before it causes any damage.
so:
1. clanking/slapping sound while accelerating in gear.
2. the rmp range and gear where noise present will vary.
3. problem not present in park revving motor.
4. problem stops while driving as soon as take foot off gas. | | |
#68905 11/20/2006 5:27 PM | Joined: Jul 2005 Posts: 227 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 227 | noise sounds like in the drive train hitting. gets faster with faster acceleration, as in when it begins there is a range where its heard and accelerating or decelerating in that range will make the clanking faster or slower. but once certian RPM is hit noise stops. this is driving me crazy. thanks in advance for any help | | |
#68906 11/20/2006 5:30 PM | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | Is it possible that your motor mounts are shot and the problem occurs while using a lot of torque? | | |
#68907 11/20/2006 5:33 PM | Joined: Feb 2004 Posts: 29,742 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,742 | Check the universal joints, the pinion bearing in the rear end, and if it's a 2-piece driverline, check the carrier bearing between the two parts of the driveshaft. I'm betting on the carrier bearing, if it's got one!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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#68908 11/20/2006 5:58 PM | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | Troy Destroy, If you have a friend to help you, you can do a pretty simple visual exam. With the parking brake applied, have your friend lay down near the rig so he can see the drive train from front to back. At an idle, go from drive to reverse in a alternating fashion. Sometimes it's possible to see a center bearing flopping around, or a u-joint doing a death dance. Welcome back HRL.  Stuart | | |
#68909 11/20/2006 6:05 PM | Joined: Jul 2005 Posts: 227 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 227 | hotrod: its a one piece drive shaft.
thanks for the suggestions guys. i'll start with the ujoints. | | |
#68910 11/20/2006 6:16 PM | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | check and see if you have a bolt that may have come lose and just might be caught in and around the fly-wheel cover..........
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | |
#68911 11/20/2006 6:35 PM | Joined: Jul 2005 Posts: 227 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 227 | good idea Fred. i'll check that first | | |
#68912 11/20/2006 7:29 PM | Joined: Jul 2005 Posts: 227 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 227 | one other thing. i was unable to reproduce the problem while going in reverse... | | |
#68913 11/20/2006 8:47 PM | Joined: Apr 2005 Posts: 345 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 345 | This could also be coming from the differential. Sometimes they are quiet while coasting or under moderate power but will while or make noise under heavy load. If so, there is a lash adjustment, and the bearings may need be checked. | | |
#68914 11/21/2006 4:10 AM | Joined: Nov 2004 Posts: 117 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2004 Posts: 117 | I would vote for a bad carrier bearing. Will make a bumping sound when under acceleration or deceleration but disappear altogether when maintaining speed not under a load.
cgresham1212
If you don't drive it, why have it?
55 1st Series 3100 5 window
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#68915 11/21/2006 4:28 AM | Joined: Dec 2002 Posts: 3,437 Moderator - The Electrical Bay | | Moderator - The Electrical Bay Joined: Dec 2002 Posts: 3,437 | loose torque converter bolt(s)?
Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
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#68916 11/27/2006 8:33 PM | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | tell us the good news.........
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | |
#68917 11/28/2006 4:43 PM | Joined: Jul 2005 Posts: 227 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 227 | well checking the trans fluid to make sure it wasnt burnt up i realized it was a little low. topped her off and the problem went away. surprised being 1/2 qt low would cause that. alls better now | | |
#68918 11/28/2006 5:18 PM | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | never heard of that before but glad you found the problem.. those are the best deals... 
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | |
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