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patraucci
New User
Aug 20, 2012, 4:37 AM
Post #1 of 7
(2348 views)
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clunking in drive train
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chevy astro 2003 & 2004 160000 & 190000 miles both of them are doing it. there is no problem whatsoever when they are cold. after driving about 20 miles i get a clunking noise somewhere in drive train until i get up tp 45 mph then it smouths out. runs fine above 45 mph
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 20, 2012, 5:05 AM
Post #2 of 7
(2319 views)
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Re: clunking in drive train
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Noises are frequently guesses at best unless witnessed. Will this clunk do that just holding the brakes and putting it in gear or does it have to be moving and more like a rotary noise with speed?
Weak guess for now is a motor or trans mount for now on both if both yours and used the same way could be a common link or misleading you that the problem is identical,
T
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patraucci
New User
Aug 20, 2012, 5:13 AM
Post #3 of 7
(2315 views)
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Re: clunking in drive train
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i first suspected it was an engine miss ,when i give it gas it over powers it and gets up to speed and the its ok
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patraucci
New User
Aug 20, 2012, 5:21 AM
Post #4 of 7
(2310 views)
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Re: clunking in drive train
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this is part of the same problem..after it is hot if i make a sharp turn at a crawl on an upgrade it sounds like thr rear axles are falling apart
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 20, 2012, 5:58 AM
Post #5 of 7
(2299 views)
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Re: clunking in drive train
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Can this duplicate a noise sitting still, brakes on hard with nobody in harms way just fighting engine against brakes but don't go nuts as I mean just the load without all the drivetrain parts moving?
If only while under load and moving while warmed up you may need to observe that which is near impossible so would be checking for mounts that can allow too much motion or lash in joints, gears, bearings that should have none.
Is this a single clunk or multiple clunks based on vehicle speed and increasing with speed. Need to narrow down the search for what is happening where,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 20, 2012, 5:58 AM
Post #6 of 7
(2296 views)
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Re: clunking in drive train
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Do you have limited slip differentials?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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patraucci
New User
Aug 20, 2012, 6:02 AM
Post #7 of 7
(2292 views)
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Re: clunking in drive train
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dont know.....going to aamco to see what they say
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