Three years ago, after becoming obsessed with 1990s Japanese luxury cars and, failing to find a non-thrashed Infiniti Q45 (or even a nice J30), I bought a very clean 1997 Lexus LS400 Coach Edition. It’s still my daily driver and still in great shape, but you always have a need for a few bits and pieces when you drive an older car. The early LS400s are extraordinarily common in low price, self-service wrecking yards these days, but the UCF20 1995-1997 LS is still worth enough that it’s a rare sight at U-Wrench-It.
Last winter, I finally found one in a Denver yard, and it has stories to tell. (Read More…)
Back in September, I wrote about my search for a 1990s Japanese luxury car as a daily driver, with the Infiniti Q45, Lexus LS400, and Acura RL as the main contenders. Five months later, I’ve made my choice. (Read More…)
TTAC Commentator xyzzy writes:
One of the O2 sensors on my 1998 Lexus LS400 recently failed, throwing a P0161 OBDII code (at 175K miles). I’ve cleared the code and verified it comes back, so I don’t think it’s a transient failure. I haven’t yet replaced it, but I have noticed that my gas mileage, as reported on the trip computer, has improved significantly since the failure. Before it was 23-24 mpg, now I’m looking at 26. I know that one of the functions of the O2 sensor is to help regulate mixture, so I’m guessing the mixture is now leaner without one of the O2 sensors. I’ve noticed no discernable change in performance of the car. Assuming I can clear the error code before taking it in for OBDII emissions inspection, is there a downside to just leaving it and running aggressively lean (if that’s in fact what’s happening)?