UPDATE What's that noise...?? Help my 993. JP WINS!!!
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UPDATE What's that noise...?? Help my 993. JP WINS!!!
Is there a doctor on the list? I will try to describe it the best I can but when I'm starting to engage the clutch from a stop in first gear. Or when I'm rolling through a stop in second gear when clutch is engaged I get a knock sound that comes from what seems to be in the back right corner of the car. I explained it to my mechanic and he couldn't find the problem. And it now seems to be getting worse. I thought it was a engine mount or a transmission mount but at my last tech inspection they couldn't find anything wrong. Has anyone had this problem? Does anyone know what this could be? Thanks in advance.
Ryan
Ryan
Last edited by luv2ride; 05-17-2007 at 08:35 AM.
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Is it one knock or a knock knock knock.....guys, could it be the dual mass going ???? I had this when my dual mass was going but it was from the rear left that it was most noted.....
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A CV joint perhaps (inner or outer).
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I don't think its a CV joint since it would be a repeating noise, not just a clunk. if the joint itself were shot it would also clunk on power on as well as power off. Does it do this?
When the suspension is under load there are lots of torsional stresses though the drivetrain and suspension. It could be from a number of sources including all worn bushings, sway bar bushings, shock mounts, etc.
I assume your mechanic has looked it over, tugged on the appropriate parts and declared it all snug and tight?
Does it also clunk under braking (i.e. the load on the rear suspension is the opposite as under acceleration?).
It could be the shocks but there are other spots in the area to look as well.
Cheers,
Mike
When the suspension is under load there are lots of torsional stresses though the drivetrain and suspension. It could be from a number of sources including all worn bushings, sway bar bushings, shock mounts, etc.
I assume your mechanic has looked it over, tugged on the appropriate parts and declared it all snug and tight?
Does it also clunk under braking (i.e. the load on the rear suspension is the opposite as under acceleration?).
It could be the shocks but there are other spots in the area to look as well.
Cheers,
Mike
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a right rear PSS9 in need of repair.
Mike,
if the joint itself were shot it would also clunk on power on as well as power off. Does it do this?
I assume your mechanic has looked it over, tugged on the appropriate parts and declared it all snug and tight?
Does it also clunk under braking (i.e. the load on the rear suspension is the opposite as under acceleration?).
Hopefully next week I will get a chance to bring it in and solve it. I'll let you know. Thanks
#12
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Luv2ride,
I had a similar "clonk" problem a while ago after an engine drop. It came from a bolt on the gearbox support. The first picture shows you the support from below to help you to locate it. Here you have 6 bolts I would doubt that all six are loose...
but here on the tip of the arrow is the one and only one bolt holding the gearbox to the support. Mine was the source of the noise. It's of course accessible from below the car, but this was the only view I had. I hope this helps
I had a similar "clonk" problem a while ago after an engine drop. It came from a bolt on the gearbox support. The first picture shows you the support from below to help you to locate it. Here you have 6 bolts I would doubt that all six are loose...
but here on the tip of the arrow is the one and only one bolt holding the gearbox to the support. Mine was the source of the noise. It's of course accessible from below the car, but this was the only view I had. I hope this helps
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JP,
Outstanding photo's! Thank you. I've been out of town and away from my computer. Hopefully soon I will be able to creep under the car and check. I hope that's it. "clunk" that's right. I'll let you know and if it is in fact those bolts I'll owe you a sweet Belgian beer. Thanks!
Outstanding photo's! Thank you. I've been out of town and away from my computer. Hopefully soon I will be able to creep under the car and check. I hope that's it. "clunk" that's right. I'll let you know and if it is in fact those bolts I'll owe you a sweet Belgian beer. Thanks!
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Very interesting! I have observed a similar clonk noise on my C4S a few times. It only happens when I engage the clutch when the car is cold, just leaving the garage.
It does not happen while driving or may be the engine/driving noise hides the clonk noise.
I will check the bolt(s) as indicated by Toga.
Thanks for posting this.
Chris
It does not happen while driving or may be the engine/driving noise hides the clonk noise.
I will check the bolt(s) as indicated by Toga.
Thanks for posting this.
Chris