DC2000 – Installation Manual 26
HHO Plus, Alternative Energies, Lta – Travessa das Serras 33, Vieira de Leiria, Portugal – Tel. 00351244697116 – Email: info@hhhoplusgas.com
Isolating the lambda sensor body – Pre-Cat and Pos-Cat Sensors
In the past the downstream lambda sensors were not used in air/fuel ratio calculations. But we are finding
quite a few cases where that's not true anymore. Car manufacturers they are using now also the rear sensors
as part of their air/fuel ratio calculations and to control the good performance of the first lambda sensor. So
we will need also to make some changes in these sensors.
The idea in this method is to seal the warmth inside the body portion of the Oxygen Sensor. We do this by
insulating the sensor and creating a “mini-oven”. The goal is to fool the fuel injection computer into sensing
too warm a sensor, thus signaling the computer: “The mixture is too rich!”. The computer then compensates
with a leaner mixture and possibly a slight advance in timing. The result is smoother engine operation and
much better economy. This method is especially important in cold winter conditions and high altitudes, since
then the Oxygen Sensor is too cold.
To perform this operation just wrap several layers of aluminum foil tape around the body of the lambda
sensors. The pictures below illustrate the area to be wrapped.
To Next Page
Loading...