Took my car for it’s second emissions test and it failed the CO part again. I failed the 15mph part but not the 25mph (again) so I assumed it was just my filter because it was rusted like hell and thought it was not getting enough oxygen at that low of speed. Put a new one on and my CO was actually higher, WTH?

2nd run at 15mph - CO (Standard 1.20) = 3.85 (failed)
I noticed on the second run my RPM on this test was higher so this explains the higher CO number.

Anyway, I’ve got a 2nd gen B16a but with a 1st gen header and still OBD0 and I know I need 2 o2 sensors with one wire on each but what vehicle to ask for? I will just get the universal bosch sensors but do they come as a set (for my header) or do I need to buy two separate ones?

I will replace my rotor, cap and sensors and hope this works. The oil and filter are still new as the engine was dropped in a few weeks ago. Any help will be greatly appreciated!!!

JG

 

Anybody??

 

if u are obd0 why do u need 2 o2 sensors?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXDrew &raquo;</TD></TR><TR><TD CLASS="quote">if u are obd0 why do u need 2 o2 sensors?</TD></TR></TABLE>

Because the obd 0 b16a ecu requires 2 o2 sensors