Technical Spark Plugs for Seicento

[westy6215]

The ecu light has now decided to go out after i reset the ecu but i still have rough idling, it's very low can't see a vacum leak though, it was doing this before i changed the plugs and air filter as well, could this be a faulty sensor?

 

[fingers99]

Could be, but a re-set can cause this, too. Try resetting again (and so on, hopefully you'll get a smooth idle).