The V8 Owners Forum -

DaveEFi. you say a wide band lambda sensor can be used to control a hot wire ECU, but that the ECU won't learn anything. By this do you mean it won't remember or store previous information or settings. If this is so, on re starting the engine would the ECU function as before, once it receive's input from the various sensors?

larryowner wrote:DaveEFi. you say a wide band lambda sensor can be used to control a hot wire ECU, but that the ECU won't learn anything. By this do you mean it won't remember or store previous information or settings. If this is so, on re starting the engine would the ECU function as before, once it receive's input from the various sensors?

I don't think a wideband unit can be used with a standard hotwire - narrow and wide are very different devices. Wideband are essentially for aftermarket EFI designed to make use of them. Although some of them can give a simulated narrowband output too, for certain applications.

Don't think the hotwire 'learns' When it is used with a a lambda sensor, that sensor is just like any other - the ECU reacts to its input at that point in time.