My GS has developed a mysterious noise.
Like all these gremlins, it's a bit intermittent.
It seems to only occur after cold start but not right away and it doesn't happen every time although it's becoming more frequent.
After driving off about 30 m, a combination of a whine and hiss suddenly begins together. There's no noise to begin with.
The whine is most noticeable when driving at low speed and it's pitch varies with the speed of the car, not engine speed.
The whine persist if coasting in neutral.
Both the hiss and whine gradually fade within a couple of minutes of driving.
Once warmed up, the hiss can only be heard when applying some throttle & can only be discerned with the window down driving along a solid barrier that reflects the sound.
Ease of the throttle and the hiss goes. The his is either on or off; it doesn't vary at all in intensity with the amount of throttle applied.
The hiss had been occuring for a while before the whine developed. I had thought the hiss was an exhaust leak, but now I'm thinking it's a friction noise because it begins at exactly the same instant as the whine noise starts.
I'm not sure if has any bearing on it but the car also has had a clutch howl for over 6 months that only occurs briefly when stomping on it from standstill or steeper hill starts but it hasn't gotten any worse.
I'm going to book it in with the only Indie here in Brisbane to get it checked out but any thoughts or advice would be appreciated.
Cheers.
John
Like all these gremlins, it's a bit intermittent.
It seems to only occur after cold start but not right away and it doesn't happen every time although it's becoming more frequent.
After driving off about 30 m, a combination of a whine and hiss suddenly begins together. There's no noise to begin with.
The whine is most noticeable when driving at low speed and it's pitch varies with the speed of the car, not engine speed.
The whine persist if coasting in neutral.
Both the hiss and whine gradually fade within a couple of minutes of driving.
Once warmed up, the hiss can only be heard when applying some throttle & can only be discerned with the window down driving along a solid barrier that reflects the sound.
Ease of the throttle and the hiss goes. The his is either on or off; it doesn't vary at all in intensity with the amount of throttle applied.
The hiss had been occuring for a while before the whine developed. I had thought the hiss was an exhaust leak, but now I'm thinking it's a friction noise because it begins at exactly the same instant as the whine noise starts.
I'm not sure if has any bearing on it but the car also has had a clutch howl for over 6 months that only occurs briefly when stomping on it from standstill or steeper hill starts but it hasn't gotten any worse.
I'm going to book it in with the only Indie here in Brisbane to get it checked out but any thoughts or advice would be appreciated.
Cheers.
John