Engine Dies ONLY before normal operating Temp.
I have an '87 F250, and recently the truck runs fine when the choke (if that's what its called after startup!) is on. While driving, the window between the high idle mode and up to the full operating temperature mode the truck will stall as soon as the clutch is depressed. It will not rest at the idle position unless you actually allow the transmission to bring the idle down while coming to a stop or without depressing the clutch until the idle is at or near normal rate. Once the truck is WARM and at normal operating temperature there is no such problem and everything reacts as it should. Does anyone have any advice or guess at what could be wrong?