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Old 09-02-2005, 11:22 AM   #16 (permalink)
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Are u sure the "clunk" isn't this?


Quote:
Originally Posted by AstroDriver
Could someone please explain the term "Driveline lash"?
It means there is too much free play in the drivetrain.
Your slowing down for a stop light and it turns green. You step on the gas and hear a loud "clunk" as the car starts to accelerate.
Or your traveling on the highway and you let the car coast a second then step on the gas...clunk
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Old 09-02-2005, 11:24 AM   #17 (permalink)
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Sounds and noises

Ah yes. I continue to treasure a 1973 MGB until the Sol GXP is available. Since the top is nearly never up on the car, the reverse experience becomes true. When the top is up, we hear all sorts of potential warning cries from throughout the old girl.

Saw my first Sol last Sunday 8/28 east bound on I-80 near Warren Ohio. Pursued to get a better look, but had to back off after the universal joints became more conversational. I have new ones at home in boxes, so it would look particularly stupid to break down about now.

The Sol is a beauty. A bit taller and wider than an MGB. A very few pounds heavier, but over twice the horsepower, with three times promised for the GXP.

Good things come to those who wait.

Try not to let your car's more conversational personality bother you. Roadsters are simply a more imtimate automotive experience.
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Old 09-02-2005, 11:25 AM   #18 (permalink)
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Quote:
Originally Posted by tls3028
Can you describe the area of the sound? Is it a good shift where the speed is increasing from the one gear to the next? Or is it when there is a lull in the shift due to driving conditions? Any vibration associated with it?
The noise only occures when torque is applied or taken off the drive train - it is only momentary, there is no vibration - it is at every shift both up and down
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Old 09-02-2005, 11:28 AM   #19 (permalink)
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come on guys I warned you about this, supposedly they were supposed to detune torque on the shift to reduce this, but I guess it is still audible. It is caused by play in the transmission, not gonna hurt anything though, all this is straight from one of the engineers mouth. SEE SIGNATURE LINK.
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Old 09-02-2005, 11:29 AM   #20 (permalink)
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In that case it maybe more than the regular knock, get it checked out.
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Old 09-02-2005, 11:43 AM   #21 (permalink)
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Quote:
Originally Posted by carguy
only occures when torque is applied or taken off the drive train
Sounds like freeplay in the driveline.
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Old 09-02-2005, 12:28 PM   #22 (permalink)
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Have heard similar noises from a GTO manual. I doubt there's anything drastically wrong with your car.

Just for interest, is your car a Limited Slip or an Open Differential?
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Old 09-02-2005, 12:50 PM   #23 (permalink)
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Clunk

HERE IS SOMETHING I GOT FROM A GM BULETINE
Information on Driveline Clunk Noise When Shifting Gears At Low Speeds

Models: 2006 Pontiac Solstice
with AISIN AR5 Manual Transmission (RPO MA5)

A Pontiac Solstice equipped with a manual transmission may exhibit a clunk noise when shifting gears at low speeds. The noise may be present during low speed driving maneuvers, such as driving in stop-and-go traffic or in parking lots, which require declutching and shifting.

Some amount of driveline clunk is normal due to the design characteristics of the driveline system. While some owners may find the clunk noise objectionable, it will not adversely affect durability or performance.

Whenever there are two or more gears interacting with one another, there must be a certain amount of clearance between those gears in order for the gears to operate properly. This clearance can translate into a clunk noise whenever the gears are loaded and unloaded quickly. Comments of driveline clunk are usually not the result of one individual component, but the result of clearance present in all of the driveline components.

Because all components in the driveline have a certain amount of clearance by design, changing driveline components may not result in a satisfactory noise reduction.
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Old 09-02-2005, 01:01 PM   #24 (permalink)
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Not to mention that the normal components that are between you and the differential have been repositioned in the Solstice...
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Old 09-02-2005, 01:11 PM   #25 (permalink)
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Many moon ago I owned a T-Bird Turbo Coupe 5-spd that did this coming on or off throttle. It occured when the rotational spin of driveshaft would increase or decrease and you would here a clunt at that moment. Ford got a a lot of complaints about it but it wasn't a serious mechanical problem, just annoying!
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Old 09-02-2005, 01:24 PM   #26 (permalink)
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I think I can hear it in Excelsior's video.

http://www.ddz.net/solstice/14/video
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Old 09-02-2005, 03:43 PM   #27 (permalink)
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My Miata has clunked into second gear from the first day I owned it. At first it was annoying and I was concerned, but with time I learned to dial out the sound. 88,000 miles later the clunk is still there but I've never had a problem.
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Old 09-02-2005, 06:04 PM   #28 (permalink)
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Quote:
Originally Posted by GC112076
HERE IS SOMETHING I GOT FROM A GM BULETINE
Information on Driveline Clunk Noise When Shifting Gears At Low Speeds

Models: 2006 Pontiac Solstice
with AISIN AR5 Manual Transmission (RPO MA5)

A Pontiac Solstice equipped with a manual transmission may exhibit a clunk noise when shifting gears at low speeds. The noise may be present during low speed driving maneuvers, such as driving in stop-and-go traffic or in parking lots, which require declutching and shifting.

Some amount of driveline clunk is normal due to the design characteristics of the driveline system. While some owners may find the clunk noise objectionable, it will not adversely affect durability or performance.

Whenever there are two or more gears interacting with one another, there must be a certain amount of clearance between those gears in order for the gears to operate properly. This clearance can translate into a clunk noise whenever the gears are loaded and unloaded quickly. Comments of driveline clunk are usually not the result of one individual component, but the result of clearance present in all of the driveline components.

Because all components in the driveline have a certain amount of clearance by design, changing driveline components may not result in a satisfactory noise reduction.

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YES
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Old 09-02-2005, 06:12 PM   #29 (permalink)
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i had an 88 nissan 300ZX that did that, and i was concerned at first, but i was told it was drivetrain lash, and that it was ok. that was my first front engined rear wheel drive car, well hell it was my first front engined car, so every thing was different to me.
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Old 09-02-2005, 06:42 PM   #30 (permalink)
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On warmer days, you will never notice it. It seems that the colder it is, the more you notice it.
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