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Author Topic: Help with the Iroc, nasty clanking....
01ss87iroc
2nd Gear
Member # 1763

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The car is a 5 speed, TPI G92 with the 9 bolt rear. Since you guys were very helpful when I pulled it out of storage, thought I post another problem:
The car was in storage for 2 1/2 years and it runs fine BUT when I am moving slow (less than 10 MPH) or decelerating, there is an occasional nasty metal on metal clanking sound. It is worse when the car is in an incline/decline position. It sounds like metal on metal that is clanking...and when decelerating, it sounds like something is still spinning and slowing down out of sync and hitting another metal part along the way. Accelerate and the problem goes away. I am hoping the driveshaft is just banging against the tranny or undercarriage. Any thoughts? Mechanic inspected the bottom, but found nothing loose. He thought it might be the gears, but when I felt it this morning in traffic, I felt a vibration in the shifter with the clanking sounds...it was out of gear. Oh yeah, this usually happens with the car OUT of gear and in neutral...as I slow to a stop. More prevalent after driving on the highway. When I hit the gas, sometimes I hear a clank too. Any thoughts? Or, any thing I should listen for so I can give a better description? Thanks!

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01 SS - #1321, 6sp, T-tops, SLP D/D, SLP mats & key fobs, SLP Bilstein, SLP PP lid - SOLD, gone but not forgotten
87 Iroc - 5sp, TPI, T-top, G92
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Posts: 388 | From: NJ | Registered: Dec 2002  |  IP: Logged
SteelHorse
1st Gear
Member # 1725

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Catalytic converter? Maybe one is rattling internally.
Posts: 113 | Registered: Nov 2002  |  IP: Logged
Big A
1st Gear
Member # 1761

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How about engine or trans. mounts?

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Member # M02-0968
M6, 35th Anniversary LE #102,

Posts: 232 | From: Springfield, PA | Registered: Dec 2002  |  IP: Logged
2002Z4CSS
"Post"er Child
Member # 1393

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You may have a tight u-joint from all of the time the car sat. You may want to remove the driveshaft and check the u-joints.
Posts: 5682 | From: Dearborn,Mi. | Registered: Feb 2002  |  IP: Logged
Bill Mason
2nd Gear
Member # 1807

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This could be a pilot bearing issue where the transmission input shaft is supported by the end of the crankshaft.

This sounnds a lot like a problem I had with my car. Similar type of noises and when it ocuured.....mostly at low speeds and de-cel. It turned out to be an input bearing failure in the tranny which also took out the pilot bearing and input shaft in the process. It was nasty.

Posts: 383 | From: Oakville, Ontario Canada | Registered: Jan 2003  |  IP: Logged
Y2KSS1363
1st Gear
Member # 1564

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Sounds like something inside the tranny.

and when decelerating, it sounds like something is still spinning and slowing down out of sync and hitting another metal part along the way

If you are decelerating with the clutch pedal pressed, the drive shaft drives the gears. If
in neutral, the gearset will slow its rotation. Sounds like something is loose when not under load.

Good luck.

[Eek!] [Frown] [Eek!]

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Cheers,
Steve SSOA F00-1363 CCSD #204
00 Camaro SS Lt. Pewter, neutral leather, M6, Hurst, PEG2, ASR, defogger
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Posts: 107 | From: San Marcos, CA | Registered: Jun 2002  |  IP: Logged
01ss87iroc
2nd Gear
Member # 1763

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Thanks folks! Car did not make the noises today...but they were nasty yeaterday. We'll see what tomorrow brings and I will go through every item you folks mentioned as soon as i have some extra time. At times, something is not right when the car is not under load. We'll see. I'll start with the tranny mounts, u-joints and cat (I don't think it is the cat), hopefully it is one of those three things.

[ 27. May 2004, 07:27 PM: Message edited by: 01ss87iroc ]

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01 SS - #1321, 6sp, T-tops, SLP D/D, SLP mats & key fobs, SLP Bilstein, SLP PP lid - SOLD, gone but not forgotten
87 Iroc - 5sp, TPI, T-top, G92
 -
Pics
http://www.highspeeddriving.com/phpbb2/index.php

Posts: 388 | From: NJ | Registered: Dec 2002  |  IP: Logged
mattp
1st Gear
Member # 2140

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kinda sounds like the tranny is shifting on the mount. its a cheap easy replacement so it cant hurt to swap it out anyway even if thats not the problem [Cool]
Posts: 171 | From: NJ | Registered: Oct 2003  |  IP: Logged
01ss87iroc
2nd Gear
Member # 1763

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quote:
Originally posted by mattp:
kinda sounds like the tranny is shifting on the mount. its a cheap easy replacement so it cant hurt to swap it out anyway even if thats not the problem [Cool]

Thanks Matt! I'm hoping it is something simple like that...I'll find out soon enough. [Eek!]
Posts: 388 | From: NJ | Registered: Dec 2002  |  IP: Logged
   

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