ok my friend has a crx with a b16 in it. his secondary o2 sensor is out. what kind should he buy? one for his car or the motor? also is there a difference between the o2 sensor in the cat and the one in the header?
-Kyle

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Consiquence Unknown &raquo;</TD></TR><TR><TD CLASS="quote">ok my friend has a crx with a b16 in it. his secondary o2 sensor is out. what kind should he buy? one for his car or the motor? also is there a difference between the o2 sensor in the cat and the one in the header?
-Kyle</TD></TR></TABLE>

buy the one for the engine: Del Sol VTEC or 99-00 SI if it's OBD2. Now for the differences on placement of the O2 sensor, the only thing I can think of is for emission purposes. I see alot of LEV and ULEV cars these days have the O2 sensor right where the cat and exhaust mainfold becomes one. I guess they want the cat to have a quick start up instead of the ol' fashion slow light up like the mid 90-80's cars normally have.

 

the motor is an obd0 motor. his ecu is a pw0 if that helps

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Consiquence Unknown &raquo;</TD></TR><TR><TD CLASS="quote">the motor is an obd0 motor. his ecu is a pw0 if that helps</TD></TR></TABLE>

then just use the O2 sensor from that year engine( I mean from the crx); the 1 wire.

 

so is it in the cat or what? or can i just see it from under tah car?

 

it should be sitting in front & on top of the cat with a 1-wire harness.