I think when that happened to me it was a vacuum leak?
Jeff
Sent from my iPhone

> On Aug 14, 2024, at 11:42 PM, Mark McCulley <mark@markmcculley.com> wrote:
> 
> Van started revving up above 2500 rpm after starting, happened a couple of times then stumbled and quit. Restart and same pattern occurs.
> 
> I reseated all the connections in engine bay, still same symptom. Disconnecting the idle control unit removed a the idle surge and allows van to be drivable, though idle is too low.
> 
> I’m a few hours from home, thinking it’s ok to drive home without the idle unit.
> 
> Any comments or suggestions?
> 
> -Mark
> 1987 syncro