i disconnected the 02 sensor completly from the harness.(the one ahead of the cat.) I was wondering if i was gonna lose power b/c of this. also does anyone have a wire diagram fior this sensor.? i was looking around but nothing came up. thanx.

 

No, but you will get a CEL.

 

why?? unless u are running OBD1

 

Limp mode anyone?

 

actually i dont think the 2nd o2 sensor will put you into limp mode.
only the first one.

 

It wont go into limp mode because of the secondary O2 sensor...However, it may throw a code.

Edit: Oops...misread the post...You would go into limp mode if it is the Primary O2 sensor...


Modified by Haunt at 2:03 PM 7/22/2003

 

If it is ahead of the cat as he explained, wouldn't it be the primary O2 sensor?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">If it is ahead of the cat as he explained, wouldn't it be the primary O2 sensor?</TD></TR></TABLE>

That's how I interpreted it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vteckiller &raquo;</TD></TR><TR><TD CLASS="quote">i disconnected the 02 sensor completly from the harness.(the one ahead of the cat.) I was wondering if i was gonna lose power b/c of this. also does anyone have a wire diagram fior this sensor.? i was looking around but nothing came up. thanx.</TD></TR></TABLE>

Yes, you will run very rich and the timing will be retarded several degrees if not more.

You can unplug the secondary o2 (in the cat) with no adverse effects (if you are using a test pipe as an example) except CEL 67. You cannot unplug the primary o2 and expect everything to be as it was before.

Reconnect it. It was a really bad idea.

 

Oops, my mistake, I saw cat and assumed you were referring to the secondary sensor. If it's the primary, you'll be in "limp," if it's the secondary, you won't.

 

i had to drive my car to the exhaust shop with no primary O2 sensor.

 

Why did you disconnect it?

You will lose power, and the car will run pretty crappy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">If it is ahead of the cat as he explained, wouldn't it be the primary O2 sensor?</TD></TR></TABLE>

okay, i feel but i dont think i care at this point as i posted that at work

 

i had both unplugged and didnt have any power loss. The ecu goes into closed loop

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Notorious B.A.G. &raquo;</TD></TR><TR><TD CLASS="quote">i had both unplugged and didnt have any power loss. The ecu goes into closed loop </TD></TR></TABLE>

Which is the equivalent of being at WOT all the time, correct? (i.e., dumping fuel)

 

Wouldn't it go into open loop as there's no more feedback from the oxygen sensor?

 

is this true b/c i still havent fixed it<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DA &raquo;</TD></TR><TR><TD CLASS="quote">Wouldn't it go into open loop as there's no more feedback from the oxygen sensor?</TD></TR></TABLE>