For over a year, the check engine light on this 96 maxima would turn
on, then after whatever the requisite start/run cycles (40-50, 100,
whatever), it would go out, then come back on a few weeks later to
repeat. the code suggested an O2 sensor and knock sensor. I didnt
notice big problems with driveability or mileage, and since I dont
drive too aggressively I didnt pay attention to any decreased power
(from the bad knock sensor). Before replacing sensors, the car ran
and sounded fine. Since replacing both sensors however, the car now
has a slight but noticable pinging while ascending a nearby hill at
35-50 mph. It is an automatic, and even if I jab the accelerator to
kick-down the automatic tranny to a lower gear and hence prevent any
possibility of lugging, the noise persists. I thought I had that
sensor installed correctly, but incorrect installation is the only
thing i can think of that would cause this.

any ideas???

On Nov 2, 6:32*pm, y2kbug <y2kb... (AT) gmail (DOT) com> wrote:
Check the wiring harness going to the knock sensor.