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#1 |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Mystery noise when in drive. Video..
This only starts to happen after the Truck has warmed up, the sound is only heard when i'm stopped at a set of lights with my foot on the brake and in drive, when I put it in Neutral it goes.....just like it shows in the Video.
Any ideas of what this might be are greatly appreciated. Edit: seems to be coming from the Stall Converter/FlexPlate area ![]()
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger Last edited by eightbanger; 02-17-2011 at 11:56 AM. |
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,594
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Re: Mystery noise when in drive. Video..
Your youtube link is the wrong one!!!
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#3 |
Registered User
Join Date: Oct 2009
Location: Tampa Bay
Posts: 1,549
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Re: Mystery noise when in drive. Video..
Geezer#99 click on the picture and it will go to his photobucket link..I heard what he is talking about but I have no idea what it is.........
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CHEVY/GMC VIN DECODERS |
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#4 |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Mystery noise when in drive. Video..
Yeah, just move your mouse over the image click it and it plays in Photobucket.
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger |
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#5 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,594
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Re: Mystery noise when in drive. Video..
Sorry. Clueless Old guy!!
Sounds like a cracked flex plate. |
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#6 |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Mystery noise when in drive. Video..
Wow! I hope not, that things only a about 18 mths old, I'm gonna check it though since it's the thing I would have least expected to have happened but would turn out to be the most lightly...if that makes sense.
![]() Thanks geezer.
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger |
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#7 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Mystery noise when in drive. Video..
Couldn't hear the noise you refer to for all the noise from the engine.
Try my garden hose stethoscope trick to isolate. Take a 2 foot section of garden hose and place it near or on the suspected area and the other end to the ear and see if you can make out where the noise is the loudest. |
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#8 | |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Mystery noise when in drive. Video..
Quote:
Thanks guys, gonna get under it tomorrow and have a close look at that FP.
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger |
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#9 | |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Mystery noise when in drive. Video..
Quote:
I'll listen to it a couple of more times but with all of the engine clatter, exhaust rumble I wasn't sure if it was the mike on your camera or the engine. |
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#10 |
Still drivin' a Rat Rod
Join Date: Sep 2004
Location: Monett Missouri
Posts: 4,925
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Re: Mystery noise when in drive. Video..
That's my guess, maybe the converter is loose
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Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the *a$#* 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website |
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#11 |
Registered User
Join Date: Feb 2011
Location: T9O Washington
Posts: 12
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Re: Mystery noise when in drive. Video..
I'd put money on one of these two, but i'm leaning twards the cracked flex plate. The vehicles I've experienced with loose converter bolts seemed to make sound all the time.
But I hope it's just loose bolts. |
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#12 |
Registered User
Join Date: Oct 2007
Location: Valley Springs, Ca
Posts: 857
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Re: Mystery noise when in drive. Video..
if you watch the video the converter is moving back and forth and wobbly quit a bit. looks to me as if its loose from the flex plate.
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![]() http://67-72chevytrucks.com/vboard/s...d.php?t=442487 My Picture Gallery http://67-72chevytrucks.com/gallery/...0&ppuser=36004 Last edited by Jeffs70; 02-17-2011 at 07:08 PM. |
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#13 |
69' Chevy Stepside
![]() Join Date: Mar 2008
Location: Anchorage, Ak
Posts: 526
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Re: Mystery noise when in drive. Video..
I can hear it, sounds like a rubbing sounds of some sort. I would try and make sure the converter bolts are tight first and if that doesn't fix it I'm not really sure what would cause that.
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-Matthew -69' Chevy Custom/10 Shortbed Stepside 2WD "Copperhead" - Restored, 6.0L LQ9 Built. L92 Heads and LS3 Intake with Comp Cam 223/231 .610/.617 112 LSA, 4L60E with Shift Kit and Circle-D 3200 Stall Converter ~Build Thread -1957 Chevy BelAir 2 Door Post Sedan, Full Frame off Restoration done myself - 6.0L with T56 six speed -1957 Chevy BelAir 2 Door Post Sedan - Nearly rust free AK car, Project in the waiting -2003' Chevy Silverado SS AWD 6.0L! - Daily Driver |
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#14 |
Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: Mystery noise when in drive. Video..
Curious to see what you find. Mine is making a similar noise.
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#15 |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Mystery noise when in drive. Video..
I absolutely hate fiddly ass cr*p like this, odd little knocks and clanks and giga giga giga noises like this one they suddenly appear and take ages to locate or identify. I'll try the hose trick 68 and i'll let you all know what I find, if I can find it that is....
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger |
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#16 |
Registered User
![]() Join Date: Nov 2010
Location: Venus Texas
Posts: 217
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Re: Mystery noise when in drive. Video..
I hear a ticking noise. Are those the right length bolts on torque converter and are they tight? Had a square body do that and tightend bolts on verter and month later did it again. New bolts fixed it, had to be from trans shop problem. Just a thought.
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#17 |
Registered User
Join Date: Apr 2010
Location: Russiaville
Posts: 203
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Re: Mystery noise when in drive. Video..
If its something in that "stall converter", its going to be a pain to diagnose, but thats where my guess is. Sounds like it has a bearing or something failing. When it is sitting stationary, with a load it is making it chirp, but when in motion, the load is reduced. When I listen to the video when in neutral, I hear a slight chirping, which then gets worse when load is applied.
Heres another hint, you say it only does it when its warmed up. Torque converters work by hydrolic coupling of the vanes, but when the tranny fluid gets warm, it also gets thinner, thus allowing more slip. Can you put a stethescope on the bell housing? If you hold the brake with it in gear and rev the engine a little, does it get worse? Last edited by biggestjohn; 02-18-2011 at 06:15 PM. Reason: More |
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#18 | |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Mystery noise when in drive. Video..
Quote:
Had a thorough look at it today, no cracks on the FP and nothing was loose I did re-torque of the bolts on the FP just incase, checked to see if the noise was coming from the Trans, and it's not. So I topped it up with trans fluid and it's still making the noise. I'll try what you suggested biggestjohn, revving a little while in gear and report back.
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger Last edited by eightbanger; 02-18-2011 at 07:04 PM. |
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#19 |
Recalculating.....
Join Date: Nov 2010
Location: New Lenox Il
Posts: 686
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Re: Mystery noise when in drive. Video..
With the converter unbolted and pushed all the way in the pump of the trans you do not want to have more then 3/16 of space between the flex plate and the converter. If you do put a washer (all 3 equal thickness) between the flexplate and conveter on all 3 converter bolts to make the distance less then 3/16 of an inch. I use a drill bit. Put all 3 in loose then go around again and snug them tight. You dont want to be too snug between the flex plate and converter though either so dont go too thick on the washers. If the converter spins (with no bolts in it) and it is under 3/16 you are good. It sounds like a cracked flexplate to me as well. Ive had some you cannot see any cracks but they have a small fracture in them mostly from improper tightening with too much of a gap between the flexplate and the converter.
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Brian - (BBrendal) 1969 Chevy Camaro Z28 1972 Chevy Blazer CST 2004 GMC Yukon (The truck that pulls the car trailer) 1972 Chevy Blazer CST #2 (Finished and sold!) Blazer build link... http://s1213.photobucket.com/albums/...rendal/Blazer/ |
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#20 |
Registered User
Join Date: Jul 2000
Location: Victoria,BC, Canada
Posts: 1,300
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Re: Mystery noise when in drive. Video..
My new engine and new TH350 makes the same sound on occasion, coupled with the odd squealing noise.
My mechanic thought it was the starter not disengaging fully, which I doubted. He greased the whatchamacallit and it briefly went away. Still a mystery for me too.
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71 GMC 1500 LWB |
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#21 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Mystery noise when in drive. Video..
i doubt it is in the converter/flexplate. I suspect it is in the trans.
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#22 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: Mystery noise when in drive. Video..
I'm confused (not uncommon,
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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#23 | |
454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Mystery noise when in drive. Video..
Quote:
I am pissed as the Trans was overhauled and the FP & Stall were replaced all at the same time not that long ago.
__________________
Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger Last edited by eightbanger; 02-20-2011 at 11:01 AM. |
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#24 |
Registered User
Join Date: Jan 2011
Location: Lynn Haven Florida
Posts: 1,019
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Re: Mystery noise when in drive. Video..
Had a truck the other day at my shop making the same noise when you put it in gear and it was a cracked flex plate, maybe yours is the same thing .
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#25 |
Registered User
Join Date: Jan 2011
Location: Lynn Haven Florida
Posts: 1,019
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Re: Mystery noise when in drive. Video..
quality flex plates slove that probelm especally with stall converters and good bolts also
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