Bcamp69
Well-Known Member
I was out for a drive and about 30 minutes into it I started hearing a rattle as I would decelerate coming to a stop. The rattle continued while idling at a stop but as soon as I began to accelerate the rattle would seem to go away. Almost sounded like exhaust rattling and started out very faint. I stopped and let the car cool for an hour or so before trying to locate the source of the noise. When I started it again the noise was gone, not even a whiff of it, so I started the 30 minute drive home. Well before I could make it home on a short highway stretch (55mph) it came back but this time was loud and sounded like some broken flex plate videos I've listened to on youtube. Anyways, I pulled it over and called for a tow.
Once at home I started it again and the noise was there sounded like it was coming from the bellhousing area....clank, clank...rattle rattle, clank, clank rattle rattle...so on in PRND (didn't matter which gear it was making the noise. I checked the tranny dust cover it was tight. I checked the flexplate to torque converter bolts and they were properly torqued and tight. A friend brought a scope over and we checked the flexplate for damage. He thought he saw damage near a bolt. I pulled the flexplate off and inspected it and could not find any damage. Bolt everything back up, all torqued to spec, fire the car up and the noise is gone. Go for a ride around the block and the rattling clanking sound returns. Sounds like it's underneath my feet???
I installed a roll control about 3 weeks before this problem started and did a couple burnouts. I may have done 1 burnout with the transmission in Drive. All fluid levels are good.
The day the noise began I was not getting on it at all, but I did hit a strange channel, almost like a French drain, in the middle of the road at about 30mph under acceleration and the rear end of the car kicked over to the right about a foot. It was very strange.
If I start the car cold and just leave it in park or do not drive it it will not make the noise. If I shift the gears then it will start and will not stop.
I'm kinda lost here. Have a cruise coming up tomorrow night I'd really like to make any ideas?
Once at home I started it again and the noise was there sounded like it was coming from the bellhousing area....clank, clank...rattle rattle, clank, clank rattle rattle...so on in PRND (didn't matter which gear it was making the noise. I checked the tranny dust cover it was tight. I checked the flexplate to torque converter bolts and they were properly torqued and tight. A friend brought a scope over and we checked the flexplate for damage. He thought he saw damage near a bolt. I pulled the flexplate off and inspected it and could not find any damage. Bolt everything back up, all torqued to spec, fire the car up and the noise is gone. Go for a ride around the block and the rattling clanking sound returns. Sounds like it's underneath my feet???
I installed a roll control about 3 weeks before this problem started and did a couple burnouts. I may have done 1 burnout with the transmission in Drive. All fluid levels are good.
The day the noise began I was not getting on it at all, but I did hit a strange channel, almost like a French drain, in the middle of the road at about 30mph under acceleration and the rear end of the car kicked over to the right about a foot. It was very strange.
If I start the car cold and just leave it in park or do not drive it it will not make the noise. If I shift the gears then it will start and will not stop.
I'm kinda lost here. Have a cruise coming up tomorrow night I'd really like to make any ideas?
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