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Strange noise by Paperkut
Started on: 03-12-2014 11:49 AM
Replies: 4 (91 views)
Last post by: Bloozberry on 03-12-2014 05:13 PM
Paperkut
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Report this Post03-12-2014 11:49 AM Click Here to See the Profile for PaperkutClick Here to Email PaperkutSend a Private Message to PaperkutEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hey I'm new to the forum but I heard this is the place to go with Fiero questions. I have a 86 GT 4 speed that I bought rebuilt at 120k and now has 140k. The car has been great until I had to drive it to Rochester where I moved. It made the 300 mile trip but when I stopped for gas about 150 miles in I heard a strange rattling sound that echoed through the shift console. It sounds like a bearing or piece of metal bouncing around on top of a spinning metal plate. (Think of roulette only with a piece of metal for the ball and a metal plate for the wheel). It only happened when I shifted and then continued until I reached 4th gear. Clutch position didn't matter, it would make the noise with it depressed or not. Same with the gas and brake pedals, no difference in either. Even in neutral it would make the noise. It got worse as the trip went on, so when I finally got there I just let it sit for a few days fearing the worst. I started it up maybe 5 days later and shifted into gear and no noise. I test drove it and it seemed like there was nothing wrong. So I continued to drive it once a week or so. Then out of nowhere after a rather short (30 minute casual drive) the sound returned. Again it got worse the longer I drove so I let it sit for a few days again and it went away. My other car needed some work so I was forced to drive the Fiero and it seemed fine on short trips but if it drove for more than 30 minutes (regardless of how often I used the clutch) the noise would return. Now I'm back in my home town (another 300 mile trip) and the noise returned on the trip. I've searched around and heard about input shaft bearings going bad but the noise that makes goes away when the clutch is depressed and heard it wouldn't matter if the car sat for weeks the shaft bearing noise would start as soon as it shifted in gear. Also heard it could be the throw out bearing but it doesn't make sense that it comes and goes. I'm fearing the worst (transmission rebuild) but wanted to see if anyone had any suggestions.
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Gall757
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Report this Post03-12-2014 12:01 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Welcome to the Forum!

Whatever you have is temperature related. Look for something in the exhaust that may touch the transmission case. You might get lucky.
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Stubby79
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Report this Post03-12-2014 12:02 PM Click Here to See the Profile for Stubby79Send a Private Message to Stubby79Edit/Delete MessageReply w/QuoteDirect Link to This Post
Have your video camera/ipod/whatever ready to record it next time it happens and post it on here. That's my suggestion!
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Lou6t4gto
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Report this Post03-12-2014 01:16 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Funny, They'll never "MAKE" the Noise, When you're equipped to Look For it !
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Bloozberry
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Report this Post03-12-2014 05:13 PM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryEdit/Delete MessageReply w/QuoteDirect Link to This Post
Does the frequency of the rattling sound change with road speed, or engine RPM, or neither?
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