# Engine shuts off **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford\ **Created:** [January 7, 2013, 12:45am UTC](https://community.cartalk.com/t/engine-shuts-off/76566 "2013-01-07T00:45:53Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![CBen](https://avatars.discourse-cdn.com/v4/letter/c/5daacb/32.png) [@CBen](https://community.cartalk.com/u/CBen)\ **Post date:** [January 7, 2013, 12:45am UTC](https://community.cartalk.com/t/engine-shuts-off/76566/1 "2013-01-07T00:45:53Z")
I have a 2003 Ford Focus with the Zetec 2L, 16 valve. When the car is warm and I put it in neutral or park and take my foot off of the brake it will occasionally shut off. Not stall, but shut off - as though I turned the key. This doesn’t happen every time; it usually doesn’t. I have no other drivability problems and there are no warning lights or engine codes. The ideas I have are: 1. vacuum/ brake booster leak 2. MAF problem or dirty throttle body 3. something weird going on with the transmission shift interlock mechanism. Just curious to see if anyone has suggestions. Thanks. ---
**Author:** ![RemcoW](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/remcow/32/2471_2.png) [@RemcoW](https://community.cartalk.com/u/RemcoW)\ **Post date:** [January 7, 2013, 1:08am UTC](https://community.cartalk.com/t/engine-shuts-off/76566/2 "2013-01-07T01:08:55Z")
Sounds more like it is related to the ignition lock or maybe a battery connection ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [January 7, 2013, 1:48am UTC](https://community.cartalk.com/t/engine-shuts-off/76566/3 "2013-01-07T01:48:35Z")
A vacuum/booster leak would set a P0171 lean code A bad MAF might very well set a code and cause driveability complaints A dirty throttle body would cause a rough/high idle You may want to hook up a scanner and check for stored codes