Plug-And-Play for 86-89 cars. It provides rapid closed-loop control and is much more tolerant to lead poisoning and fuel additive contamination than the standard one-wire sensor. Heated sensors also minimize idle "hunting" associated with typical unheated sensors and improve idle quality, because they achieve operating temperature much quicker. Our "Plug-And-Play" kit uses a highly active four-wire heated Denso Oxygen sensor.
