2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed turn ?
- Thread starter AndrewCS
- Start date
2005 911 997 Carrera C4S circa 100,000 miles - noise ( just audible 'graunch' and single or sometimes double 'click ' sound ) when making hard very slow speed turn ( R and L ) - typically when parking in restricted space - from front axle/ suspension area. Having not found any obvious signs following cursory inspection of suspension or discs - could this be indication of drive shaft wear and replacement necessary?
Thanks for recent post indicating outer CV joint as likely candidate for cause of problem. Response from a number of potential Porsche specialists parts suppliers so far is that unfortunately only the inner CV joint is available as a replacement part. Not being mechanically minded; does this make sense? Seems only solution is to purchase a replacement Drive Shaft complete - rather expensive!chrisfield said:
AndrewCS
Active member
Yes ... you now have to determine which one is the problem
Aftermarket options ...
Cv axle for Porsche 911 997 Coupe 3.8 Carrera 4S 2004 - 2008 355hp / 261kW Petrol (autodoc.co.uk)
Many thanks.
Dismantle Drive Shafts to seek to determine which CV joint is the problem.
Would it be obvious from inspection only of ( replaceable element ) dismantled inner CV joint ,under no turning load, if it is worn out?
Similarly with ( not replaceable as a stand alone element) outer CV joint?
Is there much likelihood do you think both inner and outer CV joint could possibly be shot on each Shaft?
Dismantle Drive Shafts to seek to determine which CV joint is the problem.
Would it be obvious from inspection only of ( replaceable element ) dismantled inner CV joint ,under no turning load, if it is worn out?
Similarly with ( not replaceable as a stand alone element) outer CV joint?
Is there much likelihood do you think both inner and outer CV joint could possibly be shot on each Shaft?
I have not had to replace a worn drive shaft joint on a Porsche but have changed a few on my Mini`s over the years.
CV joint issues tend to be caused by damage to the rubber boot which can allow the ingress of road crud which mixes with the grease to form a kind of grinding paste which wears down the interconnecting parts of the joint which can show up in tight turns when the angular input to the joint is at it`s greatest to the output.
I suspect the outer CV joint is subjected to more angular changes in normal operation than the inner as it has to transmit drive in not only up and down movement but also realtive to alteration in steering angle, with that in mind and that you suggest that the noise is noticable at tight steering angles, my first course of action would be to check the outer CV boot for damage which if a cut is found might explain why there could be wear in the joint..?
It seems that logically, maximum angular difference from input to output in the outer CV joint is only ever likely to be at slow speed and when steering is at or near full lock, such as during parking manouvers...?
CV joint issues tend to be caused by damage to the rubber boot which can allow the ingress of road crud which mixes with the grease to form a kind of grinding paste which wears down the interconnecting parts of the joint which can show up in tight turns when the angular input to the joint is at it`s greatest to the output.
I suspect the outer CV joint is subjected to more angular changes in normal operation than the inner as it has to transmit drive in not only up and down movement but also realtive to alteration in steering angle, with that in mind and that you suggest that the noise is noticable at tight steering angles, my first course of action would be to check the outer CV boot for damage which if a cut is found might explain why there could be wear in the joint..?
It seems that logically, maximum angular difference from input to output in the outer CV joint is only ever likely to be at slow speed and when steering is at or near full lock, such as during parking manouvers...?
As replacement of either complete front drive shaft ( if it is the outer CV joint that is damaged) or if just the inner CV joint is the culprit and it can be replaced , are alternative ODM grade replacements suitable rather than going for genuine Porsche parts?
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