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| 944 S2 - juddering /heavy vibration after hard acceleration https://forums.tipec.net/viewtopic.php?f=25&t=18643 |
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| Author: | Blackrain [ Sat Oct 04, 2014 10:08 am ] |
| Post subject: | 944 S2 - juddering /heavy vibration after hard acceleration |
Hi Everyone, My 944 S2 cabriolet develops a juddering/heavy vibration after hard acceleration when reaching 5,000 revs or more. It then chugs along and can take some time to disappear or not disappear at all. If I stop and turn the engine off and then back on it can sometimes still be there or will have disappeared. Does anyone have any thoughts please? It's going into a garage soon anyway to put it on a dyno and will then have a phased programme of works to bring it up to a better running and cosmetic standard. Thanks Paul |
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| Author: | Shark [ Sat Oct 04, 2014 10:42 am ] |
| Post subject: | Re: 944 S2 - juddering /heavy vibration after hard accelera |
Balance shaft or belt related problem maybe? |
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| Author: | Matey [ Sat Oct 04, 2014 12:44 pm ] |
| Post subject: | Re: 944 S2 - juddering /heavy vibration after hard accelera |
+1 for balance shaft/belt, pop the belts cover off to see if the belt is still there for starters. |
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| Author: | Blackrain [ Tue Oct 07, 2014 11:39 am ] |
| Post subject: | Re: 944 S2 - juddering /heavy vibration after hard accelera |
Ok thanks to you both. The other issue I have is a vibration and grinding electrical noise when trunking the steering wheel... |
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| Author: | Waylander [ Tue Oct 07, 2014 1:37 pm ] |
| Post subject: | Re: 944 S2 - juddering /heavy vibration after hard accelera |
I have doubts about it being the balance belt as it would not go if you stop and restart the engine Engine mounts might recover after a lot of stress |
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