Could be worthwhile always the chance of an item being bad out of the box.
Robin …
I’ve certainly had to deal with 1 or 2 malfunctioning items out of the box in the past, not very common but not unheard of. I’ll try to get a readout on the O2 sensor tomorrow.
Found this in my notes this morning - some figures on the coolant sensor …
Ice water 32 deg F = 5900 ohms
Boiling water 212 deg F = 0190 ohms
Pull the sensor and calibrate against the numbers . Also a bad connector goes high resistance mimicking cold coolant thereby enriching fuel mixture.
Dennis, a new O2 sensor without the heat shield triggered a CEL and a FF44 when I did it few years ago. Did your old sensor have a heat shield?
Joe …
No O2 sensor heat shield on my '89 as far as I can determine.