# Strange noise when setting of on hill **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford\ **Created:** [March 2, 2018, 7:30pm UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072 "2018-03-02T19:30:32Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Graham\_Muir](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@Graham\_Muir](https://community.cartalk.com/u/Graham_Muir)\ **Post date:** [March 2, 2018, 7:30pm UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/1 "2018-03-02T19:30:32Z")
When setting off on an a hill or under load the car makes a vibrating noise and the revs drop below 1 but once set of runs no problem the noise was followed by a smell of rotten eggs this has happened a couple of times now Ford grand cmax 2012 27000 miles ---
**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\ **Post date:** [March 3, 2018, 3:31am UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/2 "2018-03-03T03:31:01Z")
withoutpunctuationIfindyourposthardtounderstand ---
**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\ **Post date:** [March 3, 2018, 12:19pm UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/3 "2018-03-03T12:19:27Z")
> [@Graham\_Muir](#): > > When setting off on an a hill or under load the car makes a vibrating noise and the revs drop below 1 but once set of runs no problem the noise was followed by a smell of rotten eggs this has happened a couple of times now > > Ford grand cmax 2012 > > 27000 miles Smell of rotten egg means there is something wrong with the catalytic converter. ---
**Author:** ![Graham\_Muir](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@Graham\_Muir](https://community.cartalk.com/u/Graham_Muir)\ **Post date:** [March 9, 2018, 11:28am UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/4 "2018-03-09T11:28:24Z")
Thanks for your reply mate very helpful ---
**Author:** ![Graham\_Muir](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@Graham\_Muir](https://community.cartalk.com/u/Graham_Muir)\ **Post date:** [March 9, 2018, 11:29am UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/5 "2018-03-09T11:29:26Z")
Thanks mate not sure to be fair not had the smell since could just be my driving style thank you for your advice ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [March 10, 2018, 1:37am UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/6 "2018-03-10T01:37:42Z")
It may be some kind of transmission problem. Suggest to check the fluid level as a start. If a manual transmission, could be a clutch problem. Seems unlikely to be a cat problem at 27K miles, unless you’ve had some misfiring going on for some time. Any diagnostic codes? Starting off uphill with a cold engine is hard on any car. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [March 10, 2018, 1:55am UTC](https://community.cartalk.com/t/strange-noise-when-setting-of-on-hill/113072/7 "2018-03-10T01:55:46Z")
> [@George\_San\_Jose1](#): > > Starting off uphill with a cold engine is hard on any car. And all this time I thought that was why vehicles had low gears. Modern vehicles only need a few seconds before they are ready for anything but 1/4 mile time trials.