ov40 Posted May 31, 2023 Report Share Posted May 31, 2023 Car developed a knocking noise at slow speed turning into the drive at home. Took to a local independent dealer, diagnosed inner track rod end. No time to fix as he is busy, so took the vehicle to main dealer as they could complete the work, they have said they can’t find anything wrong with car, they can hear the knocking and have spent six hours trying to diagnose the noise with no luck. I am reaching out to the knowledgeable people on here. They say it is ok to drive but I’m going to France on Saturday. Car is 2012 981 Boxster S with 34,000 miles travelled. Quote Link to comment Share on other sites More sharing options...
Menoporsche Posted May 31, 2023 Report Share Posted May 31, 2023 Where are you in the country? Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 Mid Wales Quote Link to comment Share on other sites More sharing options...
Menoporsche Posted May 31, 2023 Report Share Posted May 31, 2023 Sounds like the first question is to ascertain if it is safe to drive whatever distance you intend. I had understood that suspension can knock for months, it's annoying but not terminal. Gutley set up a great map of dealers, not sure where it is. You could find another opinion. Birmingham seems obvious. Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 1 minute ago, Menoporsche said: Sounds like the first question is to ascertain if it is safe to drive whatever distance you intend. I had understood that suspension can knock for months, it's annoying but not terminal. Gutley set up a great map of dealers, not sure where it is. You could find another opinion. Birmingham seems obvious. Hi Menoporsche they have said it’s safe to drive, so I will have to use it next week.It will be a little annoying but just have to put up with it. 1 Quote Link to comment Share on other sites More sharing options...
daz05 Posted May 31, 2023 Report Share Posted May 31, 2023 Front suspension top mounts can knock as you've described. I would Google and see what comes up and then ask them to check those areas one by one. Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 The mechanic has spent six hours, trying to find it, they’ve put sensors on each corner and found nothing.🤦♀️🤦♀️🤦♀️ Quote Link to comment Share on other sites More sharing options...
greenman986s Posted May 31, 2023 Report Share Posted May 31, 2023 nothing loose in the glovebox or frunk? Quote Link to comment Share on other sites More sharing options...
daz05 Posted May 31, 2023 Report Share Posted May 31, 2023 15 minutes ago, ov40 said: The mechanic has spent six hours, trying to find it, they’ve put sensors on each corner and found nothing.🤦♀️🤦♀️🤦♀️ Feel your pain they often say things like that when they can't be bothered working it out. 1 Quote Link to comment Share on other sites More sharing options...
iborguk Posted May 31, 2023 Report Share Posted May 31, 2023 Yet conversely the first garage zero'd in on something definitive - how did they diagnose/reproduce the issue ? Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 46 minutes ago, greenman986s said: nothing loose in the glovebox or frunk? Nothing’s Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 42 minutes ago, iborguk said: Yet conversely the first garage zero'd in on something definitive - how did they diagnose/reproduce the issue ? I think they guessed. Quote Link to comment Share on other sites More sharing options...
iborguk Posted May 31, 2023 Report Share Posted May 31, 2023 4 minutes ago, ov40 said: I think they guessed. Right. Did you manage to capture any audio of the noise ? Quote Link to comment Share on other sites More sharing options...
daz05 Posted May 31, 2023 Report Share Posted May 31, 2023 There are 2 options as I see it, ask the garage to check the torque on the top mount, seems like the nearside and that would explain why everything else is ok. However, ask for confirmation that none of the bushes are worn on any of the arms, if they aren't playing ball take it to another garage. You don't need a Porsche dealer to diagnose noisy suspension components, and see what they say. The other thing I've heard about is the fuel tank pads wearing out but it doesn't sound like that. 1 Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 1 hour ago, iborguk said: Right. Did you manage to capture any audio of the noise ? Unfortunately no. Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 53 minutes ago, daz05 said: There are 2 options as I see it, ask the garage to check the torque on the top mount, seems like the nearside and that would explain why everything else is ok. However, ask for confirmation that none of the bushes are worn on any of the arms, if they aren't playing ball take it to another garage. You don't need a Porsche dealer to diagnose noisy suspension components, and see what they say. The other thing I've heard about is the fuel tank pads wearing out but it doesn't sound like that. When I came back from France I will take it elsewhere. Quote Link to comment Share on other sites More sharing options...
bally4563 Posted May 31, 2023 Report Share Posted May 31, 2023 Did they check for play in the strut damper? The bush can wear out in the top Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 They have come back with nothing, they say they can’t find anything wrong. Quote Link to comment Share on other sites More sharing options...
bally4563 Posted May 31, 2023 Report Share Posted May 31, 2023 Many years ago, I was chasing a knock from the front end, went through everything, eventually found it was the rear control arm ( tuning fork) that bolts quite far forward and sounded definitely from the front end Quote Link to comment Share on other sites More sharing options...
Paul P Posted May 31, 2023 Report Share Posted May 31, 2023 Mate has a GT3. Had a knock from front at slow speed, when warm. OPC couldn’t find it and suggested throwing 4k and it. He called centre gravity and explained. They diagnosed it as shock bushes over the phone. He took it to them. They sent the shocks away for rebuild and charged him 100 a corner for the rebuild. not saying it’s that or as easy a fix - but someone who knows their stuff may be able to help remotely. If you get some audio of the noise or even can describe it over then phone then perhaps give centre gravity a call. Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 It doesn’t say a lot for a main dealer if they can’t find the vault, I’m just waiting for the bill for a no fix problem. Quote Link to comment Share on other sites More sharing options...
bally4563 Posted May 31, 2023 Report Share Posted May 31, 2023 8 minutes ago, Paul P said: Mate has a GT3. Had a knock from front at slow speed, when warm. OPC couldn’t find it and suggested throwing 4k and it. He called centre gravity and explained. They diagnosed it as shock bushes over the phone. He took it to them. They sent the shocks away for rebuild and charged him 100 a corner for the rebuild. not saying it’s that or as easy a fix - but someone who knows their stuff may be able to help remotely. If you get some audio of the noise or even can describe it over then phone then perhaps give centre gravity a call. As I said!! Quote Link to comment Share on other sites More sharing options...
Paul P Posted May 31, 2023 Report Share Posted May 31, 2023 That’s when you need the specialist to be “special” - not just “cheaper” They acknowledge there’s an issue but can’t identify it. There should be some accommodation in the amount charged to reflect that in my opinion. Quote Link to comment Share on other sites More sharing options...
ov40 Posted May 31, 2023 Author Report Share Posted May 31, 2023 8 minutes ago, Paul P said: That’s when you need the specialist to be “special” - not just “cheaper” They acknowledge there’s an issue but can’t identify it. There should be some accommodation in the amount charged to reflect that in my opinion. Agree, it wouldn’t be so bad, but I’m going to France at the weekend and wanted it sorted. Quote Link to comment Share on other sites More sharing options...
Paul P Posted May 31, 2023 Report Share Posted May 31, 2023 1 minute ago, bally4563 said: As I said!! Indeed!! suspension and the various woes aren’t my strong suit so I wasn’t venturing it as a root cause - but if you think it could be then good info I was attempting illustrate the a similar scenario (main dealer can’t find it - specialist can - even from a description) what surprised me was the rebuild by (I assume bilstein) for an oe Porsche shock Quote Link to comment Share on other sites More sharing options...
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