I’ve been pursuing a gremlin (it’s more like the Joker) in my idle control.
The car is a Saab 94 900 2.0l Turbo.
On startup on cool days, it feels like a cylinder is miss firing. When warmed up, the problem goes away. This is a 5 speed and while coasting to a stop, the engine will idle at about 1200 until a dead stop at which time idle will drop to normal of 900 or so. My fuel economy is ridiculous in the city, about 9 to 15mpg.
Likely suspects:
O2 sensor (changed)
Coolant Temp Sensor
Idle Air Controller (Cleaned, swapped)
MAP Sensor (hoses to evap switch changed)
DIC ???
Help,I’m stumped