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Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old 09-29-2007, 01:24 AM   #1
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Join Date: Nov 2005
Location: Edmonton, AB
Posts: 395
Car: '87 Z-28
Engine: LB9
Transmission: 700R4 (T5 soon)
Axle/Gears: 2.73

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knocking from t5?
search button still broken?
here goes: my car will make a thumping/knocking noise from the front of the transmission/rear of engine. it comes and goes seemingly at random and is much louder inside the car than from underneath or under the hood. the speed of the knock is related to engine speed, not vehicle speed. it occurs in all gears and neutral, whether the car is warm or cold, moving or stationary, clutch in or out.
it first started after i got the clutch replaced, the guy at the shop told me the noise would go away after the new clutch was broke in... well it did, for a few months, then came back. so i have no idea what's goin on.
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Old 09-29-2007, 05:22 PM   #2
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Join Date: Sep 2005
Posts: 10,441
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere

Classifieds Rating: (1)
Re: knocking from t5?
Quote:
clutch in or out
There's your primary clue right there.

It CANNOT POSSIBLY be the transmission. Or the clutch. Cross them off your list of suspects.

The description sounds alot like exhaust touching the car body.

The "search" button is still OK, I think; but the server behind it seems to be TU.
__________________
Numquam ponenda est pluralitas sine necessitate.
— William of Ockham, from Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi

Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

The simplest explanation that fits all the facts is probably the right one.
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Old 11-01-2007, 01:43 AM   #3
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Join Date: Jun 2005
Location: KC METRO
Posts: 42
Car: 1984 Z28
Engine: 355
Transmission: T5

Classifieds Rating: (0)
Re: knocking from t5?
Torque arm still tight on the transmission mount?
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Old 11-01-2007, 01:43 AM
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Reload this Page knocking from t5?
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