Start then stalls immediately.

[K1CKBAC]

Hey guys,

I just replaced the valve cover and throttle body on my car however, I started the car and it would stall immediately. I double checked for vacuum leaks and cannot find any. What sensors can cause this issue?

Little Backround: Transferred the TPS to the new throttle body. The car starts and ran fine prior working on the car. 1995 525i Auto.

[Aleksey]

Triple check for vacuum leaks.

[oliver.r]

sounds like your boot for the airbox is loose