I have a 92 civic cx and a 99 b18 in it. I am trying to hook up the 4-wire O2 sensor. I did it with just some wire I bought from NAPA. It worked fine for about a day, and then it started acting up... ie cutting out and such. Someone on here told me i needed to use "sheilded" wire... so I just got back from NAPA and the guy didnt know what sheilded wire was.

so if anyone know what type of wire I am suppose to be using it would be a great help.

 

Probably talking about split loom or heat shrink over the wires to protect against heat.

 

a shielded wire is a regular wire with a grounded wire wrapped arround it.

 

Shielded wire is normal wire core but has a surrounding metal (looks like tin foil) around it to protect the wire from static and other interference. This is used a lot in stereo systems.

 

I know it's probably not likely, but I think I was just standing next to you at napa when you were in there! check your pm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by monicle &raquo;</TD></TR><TR><TD CLASS="quote">a shielded wire is a regular wire with a grounded wire wrapped arround it.</TD></TR></TABLE>

Right on man!
a shielded wire is used where Parasitic static can falsify data acquision.
Exemple : an EGT is placed in the 3 runner of the exaust manifold is used to monitor Gas temperature, the tension is generated by the thermocouple ( the EGT probe is a termocouple K type ). The main problem is when you run the wire near the coil ( ignition wire /cap / rotor ) those part's got magnetic field around due to high voltage, the magnetic field induct some voltage in the thermocouple wire signal. the signal is in MV and the induction of the Magnetic field is near if not more than 1 volt. so if your EGT wire is not grounded a one point ( wich most of them are ) you won't get an accurate response.

Hope this help to understand better the phenomenon,

See ya