I have a 2005 90 Optimax. . alarm going off, says no signal from water pressure sensor.. plugged in a known good sensor, computer reads it then, ordered a new sensor, won't read new sensor, but will read known good sensor. ordered another new sensor, still won't read new sensor, but will read known good sensor.. 2 bad sensors in a row? doesn't make any sense to me? Help please.. if you have any suggestions
