O-2 Failure
Shannen Durphey
shannen at mcn.net
Thu Apr 9 08:32:53 GMT 1998
Paul Ruschman wrote:
>
>
> "THE" list,
> I recently purchased a ECHLIN O-2 sensor and installed it in the collector of my Hooker Street Rod headers on my V-8 Datsun Z car. It worked great at first. I haven't been monitoring it lately and when I hooked my trusty Fluke 87 to the wires I ran in the car from the O-2 it was putting out between .18-.2 volts no matter what load/RPM. I looked at the O-2 sensor itself and I noticed exhaust soot coming from the metal cap where the electrical lead comes out. I take it his is NOT good.
> Any insight on this problem or experience using these generic one wire ECHLIN O-2 sensors? The parts guy at NAPA said it was a quality unit and recommended it over the generic BOSCH unit I originally wanted.
>
> Thanks in advance for any and all info,
>
> Paul (BRAAP) Ruschman
> 75' 280 ZR-1
> http://www.datsuns.com/projects/paulrproject.htm
I have had problems with aftermarket O2 sensors. They can
send a voltage prematurely, causing the ecm to go into open
loop before the sensor is properly warmed up, they can fail
prematurely, and the connecto0rs sometimes don't make good
connection. I like to use a GM unit from a 90 pickup for
one wire sensors in GM vehicles. These are somewhat
protected from mud intrusion. I'm sure that many people
have used aftermarket sensors without trouble, but I have
had problems with them.
Shannen
More information about the Diy_efi
mailing list