Hi,
I'm wondering if the OEM lamdba for a PRA ECU is just a standard 4 wire zirconia (?) item.
I have installed a universal 4-wire lambda on my car, and it's signal is getting to the ecu. Curiously though, when the ECU is closed loop mode, the output voltage of the lambda is not swinging to suggest the ecu is dithering the fuelling. If I blip the throttle, the lamda voltage increases (to about 0.7v), then returns to a static voltage of 0.3.
As an aside, when I stripped my donor EP3 for the drivetrain, the lambda sensors were both wired directly to the ecu, without a relay for the heaters. I also don't appear to have a lambda relay wire at the location indicated on the Hondata example wiring diagram.
Thanks in advance for the help!
John.