Review on 🔌 Denso 234-4209 Oxygen Sensor with Connectors (not included) by Derrick Bellando

Dakota 2000 4.7 liters, gas mileage almost halved, exhaust was fat. A computer scan showed an oxygen sensor and a high pressure sensor for the power steering reservoir. Apparently, if the pressure switch fails, liquid will squirt into the wiring harness and can contaminate the sensors. This happens on Dakotas and Darangos in early 2000. Not sure if this applies to other engine sizes. Of course when I replaced the one behind the catalytic converter there was oil in the quick coupler, the one in front wasn't very accessible so I took it to the mechanic. He replaced the front one and he put out the check engine light and the gas mileage is back to what it was before. The light came on again because the pressure switch replaced it and the check engine light was off for almost two weeks for the first time in 3 years. I hope I don't have any problems with the wiring harness in the future because of the liquid in it. The kit doesn't come with a quick connector, but there are butt connectors and a shrink tub to get the job done.