Ferrari Mailing List: Re: Oxygen Sensors - was 512TR service bufu

[Doug and Terri Anderson (dnt]

>>The ClyDe suggests "Just buy cut and splice"

Cut and splice? AYIEEeeeeee
May work for a 1980 application and a first time three way cat - -
BUT the newer applications are quite complex and quite sensitive.
Why not cut a late OBD I sensor wire and splice?
Well- it may change the O2 to ECU signal.
Secondly, to operate effectively, the O2 gizmo requires a reference O2 
source.
Some cheap O2 sensors just use a hole in the case and Voila - there you are.
Others, get this, actually run a hollow tube on the outside of one of the 
wires into the passenger cab to insure uncontaminated HC O2.
Cut that - pooooof - yer back to square one.
The four wire O2 for the 512 TR is an intricate part of a moderately 
complicated set of engine commands.
Bottom line - Get it from Ferrari and rest assured if you have other 
problems it aint that O2.
Doug's axiom - if it is emissions related - get it from the factory.
Sometimes the cheapest way to go is the most expensive - in dollars and 
sense. heh heh
I could be wrong -
Onward
DOUG