Dear all experienced car enthusiasts,
I've recently changed my MyVi 1.5's exhaust system to a full set stainless steel exhaust. After changing the exhaust system, there's a rattling/vibrating sound coming from the rear. It sounds like a metal touching metal sound. It happens when the car is idling, when I rev it there's no sound until it is at the idling RPM again.
Problem is this happens randomly so whenever I drive back to the exhaust shop, they cannot detect the problem as the sound does not happen. However, based on my observation, it usually happens when it is cold. Morning there's a bit of sound and also during night it's kinda loud which I suspect it happens when it's cold. As I'm quite far from the exhaust shop, it is inconvenient for me to keep going back and couldn't solve the problem.
It is also louder coming from the rear (so rear passengers can hear the sound more obvious).
Any idea what could be checked to solve this problem? Could it be because when it is hot, some metal expand so there's no sound?
I've recently changed my MyVi 1.5's exhaust system to a full set stainless steel exhaust. After changing the exhaust system, there's a rattling/vibrating sound coming from the rear. It sounds like a metal touching metal sound. It happens when the car is idling, when I rev it there's no sound until it is at the idling RPM again.
Problem is this happens randomly so whenever I drive back to the exhaust shop, they cannot detect the problem as the sound does not happen. However, based on my observation, it usually happens when it is cold. Morning there's a bit of sound and also during night it's kinda loud which I suspect it happens when it's cold. As I'm quite far from the exhaust shop, it is inconvenient for me to keep going back and couldn't solve the problem.
It is also louder coming from the rear (so rear passengers can hear the sound more obvious).
Any idea what could be checked to solve this problem? Could it be because when it is hot, some metal expand so there's no sound?