View Full Version : big power loss when engine warms up

matt's sc
01-27-2005, 12:46 PM
i have a 93 sc and it has no cats. when it is first started up it is a rocket but after about 10 or 15 min of driving it loses about 60-70 hp (it only happens on on days when it is 80 degrees and up?

and suggestions?


01-27-2005, 03:57 PM
Open loop is the state the EEC and engine are in when the car is started. More fuel is provided to the engine just like having the choke on.