If the sensor fails- the car should run rich. That's the default.

I would buy a universal replacement, but find the cheapest 2-3- or 4 wire sensor and cut and splice. I think in the 90's only bosch made them. For my old benz- a 1990 302 mustang sensor, cut, solder, splice and it works perfectly. It was about $35 versus a universal @ $55.
Amazon has great prices if you want to just replace it- about a 1/3 less than most of the online automotive places.

M

AGREED.

PB blaster works wonders if yours is stuck. My universal also had anti seize already on the threads.

__________________
1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


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