Oxygen sensor connector trashed

[LAKings]

Hello,I have a quick question about the O2 connector at the top center of the firewall.I recently diconnected the connector and it broke into pieces.Can I somehow bypass the middle plastic and directly either solder or connect it together somehow?I really appreciate your help.Thanks.

Chris

[Wolf1]

Welcome !!

And yes you can eliminate the O2 sensor connector, and splice the wire together.

Some people will tell you to only use crimp connectors, some will say solder.

[bryanthompson]

I used a crimp connector with heat-shrink, although some of the heat shrink looks to be coming off.

Probably shouldn't solder: http://frwilk.com/early944/misc/oxygen.htm

Use wire crimps or Posi-LockÒ. All the latest BOSCH O2 sensors are air tight. But the O2 sensor must have a clean air supply to work. It breaths down the center of the multi-stranded wire(s). Solder and solder flux will close the air-gaps between the strands of wire and the O2 sensor may malfunction.

[pokey]

Use crimp on male/female connectors, so you can easily replace the O2 sensor.

[LAKings]

The green wire has a seperate wire inside.Do I connect both together?

[pokey]

No. One is the shield. Unweave enough to get a crimp on the inner wire, then twist the unwoven part and put a crimp on it, too.

[LAKings]

Do I connect the outer wire(unwoven wire) to something or just leave it crimped loose?I really appreciate the help.

[Rmills944]

I twisted and heat shrunk - worked great!

[88BlueTSiQuest]

Originally posted by LAKings
Do I connect the outer wire(unwoven wire) to something or just leave it crimped loose?I really appreciate the help.

Leave loose, it's a shield, and isn't supposed to connect to anything. Just crimp it, or tape it off.

[LAKings]

Thanks all.

[pokey]

I would connect it to ground. That way the shield will actually do what it is supposed to.

[nota]

trick I learned from the Volvo boys
all the newer bosch O2 sensors [3 wire] are ALL THE SAME unit
the ONLY difference is the PLUG on the end
cut off yor old plug
match the black and white wires
and splice
BTW the two whites are both the heater ends so you can reverse them no problem

ford mustang V8 O2 is the cheapest
most chain stores sell them UNDER $50
anyone tryed this on a 944??

sure does work on volvos

[88BlueTSiQuest]

Originally posted by pokey
I would connect it to ground. That way the shield will actually do what it is supposed to.

It isn't connected to a ground at the O2 itself. The 'theory' behind it is to ground it where the source needs it to be clean, which is at the DME itself. Having it connected at both ends makes it just another ground wire, and gets rid of it's shielding capabilities and could introduce a ground loop and noise, thus making the readings inaccurate.

[pokey]

I stand corrected...