Three years is about how long my idle air control valves are lasting. They've been the most frequent maintenance issue since I bought the ST new in 2000.
I just replaced mine for what must be the fourth or fifth time. I've got only 80k miles on the ST, as I drive it only for short 2-mile trips to work, mainly.
Symptoms are either:
* in cold weather, one morning, I can't start the ST -- it will crank but never start running.
* or it stalls while idling at a red light -- it just won't idle.
I've come to the point where I just keep a new one in the garage, ready for the next unexpected day when it won't start. It takes about four minutes to change it, once I've found a socket wrench with a 6 mm and 7 mm sockets.
I just replaced mine for what must be the fourth or fifth time. I've got only 80k miles on the ST, as I drive it only for short 2-mile trips to work, mainly.
Symptoms are either:
* in cold weather, one morning, I can't start the ST -- it will crank but never start running.
* or it stalls while idling at a red light -- it just won't idle.
I've come to the point where I just keep a new one in the garage, ready for the next unexpected day when it won't start. It takes about four minutes to change it, once I've found a socket wrench with a 6 mm and 7 mm sockets.