crackerjacker006

I got a replacement catalytic converter for my 99 ex and it doesnt have an o2 sensor hole so can i just unhook the sensor at the plug and run it until i can get a muffler shop to weld on a bolt to screw the sensor into.

Deemeetree

You can run it indefinately. Your car just won't idle or run as smooth as it does when an O2 sensor is present.

jbscivichb92

its gonna run like **** if at all.

khmboostedeh2

it'll run, but im pretty sure the car will accelerate when it wants to, as long as ur foot is on the gas. wont be smooth at all

pdiggitydogg

the 2ndary o2 doesnt really do that much, as far as engine operation.
Yes, the car will run.
You will throw a cel..but the ecu will not go into limp mode.

crackerjacker006

The check engine light is already on cause i got a high flow cat, but it does have the o2 sensor in it. So you are saying that putting on a cat without the o2 sensor will make it idle bad?

klungemonger

No, the sensor in the cat will NOT make your car run bad! I've been running with the sensor out for about 5-6 months already, no problems at all.
It's just an emissions control device, not critical to engine function.
Your sensor is still on because most generic "hi-flow cats" are junk, not really doing anything at all to reduce emissions. Especially those silly chromey tubes on Ebay.

Padawan

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by klungemonger &raquo;</TD></TR><TR><TD CLASS="quote">No, the sensor in the cat will NOT make your car run bad! I've been running with the sensor out for about 5-6 months already, no problems at all.
It's just an emissions control device, not critical to engine function.</TD></TR></TABLE>

Correct. All of the other posts in this thread stating that the car will run poorly or not idle well with a missing secondary O2 sensor are completely incorrect.

JDMallTHEway

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Padawan &raquo;</TD></TR><TR><TD CLASS="quote">Correct. All of the other posts in this thread stating that the car will run poorly or not idle well with a missing secondary O2 sensor are completely incorrect. </TD></TR></TABLE>


primary o2 will f u up, but secondry dosent do much.

Ultiima

I did that once...the car will run like **** becouse it runs to rich!(the ecu runs in emergancy program)

pdiggitydogg

^thats only the primary o2
the 2ndary wont do ANYTHING

AshleyC

I ran with out it actually before it was fine but it screwed up my gas