Hi all,
Only my second post so please be kind
I've recently purchased a 2010 e350cdi saloon (231 bhp)
After I got it, I noticed under heavy acceleration a kind of whine, it sounds like a supercharger if I'm honest, but it's only for about 2 seconds and it was when I was heavy heavy accelerating and it only happened between 3rd and 4th on the 7 speed tipronic box. It was not there in E mode but there in S mode.
Today I've been to see the lovely bloke that is Acid over at MSL Birmingham for a remap, and now the noise is there louder and more apparent but only for the same short time and it's louder in S mode and only between 3rd and 4th. But now you can also hear it in E mode.
When I spoke to Acid, he said it could possibly be the torque converter but it was strange that it's only happening in 1 gear.
The car had the auto box serviced at 45k and is now on 74k, but I'm miffed at what it could be.
Luckily I purchased from a main dealer (albeit not merc) so warranty isn't a issue if it is something gearbox related, but I'm just wanting your opinions?
Thanks in advance
Liam.
I've attached the new dyno graph in case it helps
Only my second post so please be kind
I've recently purchased a 2010 e350cdi saloon (231 bhp)
After I got it, I noticed under heavy acceleration a kind of whine, it sounds like a supercharger if I'm honest, but it's only for about 2 seconds and it was when I was heavy heavy accelerating and it only happened between 3rd and 4th on the 7 speed tipronic box. It was not there in E mode but there in S mode.
Today I've been to see the lovely bloke that is Acid over at MSL Birmingham for a remap, and now the noise is there louder and more apparent but only for the same short time and it's louder in S mode and only between 3rd and 4th. But now you can also hear it in E mode.
When I spoke to Acid, he said it could possibly be the torque converter but it was strange that it's only happening in 1 gear.
The car had the auto box serviced at 45k and is now on 74k, but I'm miffed at what it could be.
Luckily I purchased from a main dealer (albeit not merc) so warranty isn't a issue if it is something gearbox related, but I'm just wanting your opinions?
Thanks in advance
Liam.
I've attached the new dyno graph in case it helps