Uh Oh! (torque tube failure?)
06-12-2005, 12:06 AM
#1
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Uh Oh! (torque tube failure?)
I'm hearing a strange sound from under my car about where the shifter is but from underneath. It sounds almost like marbles being dropped on a plastic surface. I hear it while in park, revving the engine to about 2000rpm's. An accompanying issue is that i'll get an occasional harsh vibration when accelerating, it seems like the car want's to shut off. At first I thought of it as just hessitation but it's a mixture of both hessitation and vibration.
Initially when I would try to accelerate the car would not actually pick up speed until I started to let off of the pedal, with an accompanying whirring noise in the rear at about 75mph.
It's an 85 euro with 59,000 mi, and totally a blast barring the recent issues.
A little or a lot of help would be very much appreciated.
Initially when I would try to accelerate the car would not actually pick up speed until I started to let off of the pedal, with an accompanying whirring noise in the rear at about 75mph.
It's an 85 euro with 59,000 mi, and totally a blast barring the recent issues.
A little or a lot of help would be very much appreciated.
Last edited by Randy V; 06-17-2005 at 01:41 PM.
06-12-2005, 04:05 AM
#6
Fleet of Foot
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Originally Posted by freezzz
An accompanying issue is that i'll get an occasional harsh vibration when accelerating, it seems like the car want's to shut off. At first I thought of it as just hessitation but it's a mixture of both hessitation and vibration.
06-12-2005, 10:05 AM
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It's a 4spd automatic. I don't think I like where this is heading...
After the car is warm I don't hear it as much at idle, it sounds pretty crackly when it's cold though. Also at low rpm's I don't feel much vibration. I just nervously took it for a drive and as long as I didn't push it past 2000 rpm's it shifted smoothly and didn't seem to bog.
???
After the car is warm I don't hear it as much at idle, it sounds pretty crackly when it's cold though. Also at low rpm's I don't feel much vibration. I just nervously took it for a drive and as long as I didn't push it past 2000 rpm's it shifted smoothly and didn't seem to bog.
???
Last edited by freezzz; 06-12-2005 at 11:56 AM.
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06-12-2005, 01:31 PM
#8
Three Wheelin'
The torque tube fix is expensive (part is $500 exchanged from 928 intl), but the transmission has to come out. And to get the transmission out, you gotta drop the rear suspension and exhaust. It's very labor intensive.
Some have build jigs to press out their TT bearings, and put the car up on tall jackstands and have done it in their garage. So it can be done on the cheap if you're adventurous.
The TT fix is much less expensive TBF. You should probably get the flex plate checked immediately, but if it IS the flexplate, and you are getting hesitation when cold, then you're probably too late. On a brighter note, the TT problem is probably worse when everything is cold, too, so it could just as easily be that. Probably more likely.
Some have build jigs to press out their TT bearings, and put the car up on tall jackstands and have done it in their garage. So it can be done on the cheap if you're adventurous.
The TT fix is much less expensive TBF. You should probably get the flex plate checked immediately, but if it IS the flexplate, and you are getting hesitation when cold, then you're probably too late. On a brighter note, the TT problem is probably worse when everything is cold, too, so it could just as easily be that. Probably more likely.
06-12-2005, 02:02 PM
#9
Fleet of Foot
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One way to possibly rule out a thrust bearing problem is to check and see if your oil has any metal shavings in it. Hopefully this is not the case and you have a torque tube r&r ahead of you.
06-15-2005, 10:07 PM
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Okay, I'm ready to slide under the beast and assess the damage. I will start by checking the TT and go from there. One question before I get started though (rookie question but I want to be safe), where is the best place to position the jack stands for personal safety and for the cars sake.
Thanks
Thanks
06-17-2005, 02:57 AM
#14
Sounds like TT bearings, but just for grins and giggles try to isolate the sound.
Though rare you could have some unsupported heat shields - usually missing hardware - which would let the shield rattle/vibrate against another heat shield, cat, exhaust component.
Good luck.
Though rare you could have some unsupported heat shields - usually missing hardware - which would let the shield rattle/vibrate against another heat shield, cat, exhaust component.
Good luck.