2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

"Clunk" sound from transmission in 1st and 2 gear

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Old May 16, 2007 | 10:54 AM
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"Clunk" sound from transmission in 1st and 2 gear

I have searched and found a lot many posts about rattling but my transmission makes a "clunk" noise when I shift into 1st or 2nd gear (5spd), not so much with the other gears if at all. The sound is almost like if you dropped a heavy plumbers wrench under the car while you where in it.

I have ordered some Red Line MT-90 to replace the transmission fluid, I don't know if it has ever been replaced.

If anyone knows anymore about this symptom, I would really appreciate some more info.

Thanks in advance
-Max
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Old May 16, 2007 | 10:59 AM
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pp
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when does the clunk happen? when you put the car in gear or depress/release the clutch?
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Old May 16, 2007 | 11:12 AM
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The sound occurs when I release the clutch in 1st and 2nd gear. There is no additional noise while the car is running, but If I engage the clutch and the release it the noise occurs again.

-Max
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Old May 16, 2007 | 11:27 AM
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Bongolio
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My bet would be a tranny or Diff mount.
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Old May 16, 2007 | 11:45 AM
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Think first about the front drive shaft U joint. Classic for the front when clunk/clang is heard in low gears, the rear joint usualy presents as clunk/clang in higher gears.

Tranny/dif mounts noise up in alny gear.
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Old May 16, 2007 | 11:46 AM
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Try coasting and shifting in and out of 2nd gear, does it still make the same noise?
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Old May 16, 2007 | 12:11 PM
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Originally Posted by TehMonkay
Try coasting and shifting in and out of 2nd gear, does it still make the same noise?
Yep, it happens when I do that. Basically every time I release the clutch in lower gears.

-Max
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Old May 16, 2007 | 12:40 PM
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I'd check your mounts first. I believe the u-joints are also bad it you get vibrations while accel. and decel. (bad front u-joints for accel, and bad rears for decel.)
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Old May 16, 2007 | 12:46 PM
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Mine have always made a slight clunk when shifting in and out of gear while coasting, i imagine it's the mounts, i got some poly ones, i just haven't put them in yet.
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Old May 16, 2007 | 01:57 PM
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Are they hard to replace?
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Old May 16, 2007 | 02:09 PM
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Bongolio
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Originally Posted by MaxJenius211
Are they hard to replace?
No and if your u-joints are bad they cannot be replaced you will have to replace the whole driveshaft...but the most common cause is mounts.
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Old May 16, 2007 | 05:59 PM
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Originally Posted by rotorman85
No and if your u-joints are bad they cannot be replaced you will have to replace the whole driveshaft.
You are incorrect, the u-joints can be replaced. There is a thread in the archive.
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Old May 16, 2007 | 06:24 PM
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my car does the same kindof thing along with shifing into first and second hard some times, grinding second just for a tad while shifting at high RPMs, and second grinds just a tad when droping it in at higher speeds. Oh yea some times it also grinds just for a sec in reverse when i am in first and quickly shift to reverse (not burning out just or any stress on the drive line just shifting quickly)
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Old May 16, 2007 | 06:28 PM
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DOes it make the noise if you leave the car in gear and hit and release the accelerator?

Mine does that, and its my diff mount
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Old May 17, 2007 | 07:20 PM
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From: Virginia
Can anyone point me to that archive post about the drive shaft U joint.
Yes, I searched. I did not successfully find.

Thanks
-MAx
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