# Problematic beamer **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** x5, bmw\ **Created:** [June 5, 2010, 11:23pm UTC](https://community.cartalk.com/t/problematic-beamer/49915 "2010-06-05T23:23:11Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![n\_perez](https://avatars.discourse-cdn.com/v4/letter/n/5e9695/32.png) [@n\_perez](https://community.cartalk.com/u/n_perez)\ **Post date:** [June 5, 2010, 11:23pm UTC](https://community.cartalk.com/t/problematic-beamer/49915/1 "2010-06-05T23:23:11Z")
I have a 2005 BMW x5. I’ve had it since March 09’. I love this car, but since i got it it has periodically died for no reason. It only happens when it’s idling at a stoplight, and it starts back up after i turn it back on. Also, on occasion it will start to shudder really bad and the service engine soon light comes on. When I restart it the shuddering and the light is gone. I use 93 octane gas, and was told if it doesn’t die while on the diagnostic machine, they can’t find what is wrong with it. Any ideas what is causing it? ---
**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\ **Post date:** [June 6, 2010, 12:07am UTC](https://community.cartalk.com/t/problematic-beamer/49915/2 "2010-06-06T00:07:55Z")
Probably a vacuum leak from one of the big hoses under the first layers of covers over the va;ve cover (where the coils are) I am assuming it is a V-8. Vacuum leaks will do this sort of thing and not set a code.Either that or the crankcase vent valve, heard any “mooing”? they make a mooing noise when ruptured. They are located at the back of the intake manifold (way back), you cant see it.