o2 sensor purpose

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Jul 27, 2006 | 06:46 AM

#11

stylincompact

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Joined: May 2006

Posts: 172

RE: o2 sensor purpose

head is a d16y8 head from 97 ex, into a 98 civic hx d16y5

Jul 27, 2006 | 08:25 AM

#12

mxs

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Joined: Jul 2005

Posts: 7,994

From: Rochester, NY

RE: o2 sensor purpose

what harness and ecu are you using?

Jul 27, 2006 | 06:17 PM

#13

stylincompact

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Joined: May 2006

Posts: 172

RE: o2 sensor purpose

everything is from an ex, wire harness, ecu m/t, head..

Aug 1, 2006 | 06:53 AM

#14

stylincompact

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Posts: 172

RE: o2 sensor purpose

anyone help? do i need to spilice into the ecu or what? need a different harness. isnt this typical with any y8 swap?

Aug 1, 2006 | 08:48 AM

#15

Forty04

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Joined: Mar 2005

Posts: 15,280

RE: o2 sensor purpose

Quote:

ORIGINAL: baker

speaking of this, what size wrench do i need for a d16y8 o2 sensor?

I think it's an 18, If I remember correctly. You can get a special socket though that comes in REAL handy. It has a slit in it for the wiring. Defintiely helps prevent the broken knuckles

Aug 7, 2006 | 02:02 PM

#16

stylincompact

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RE: o2 sensor purpose

anybody? hello?

Aug 7, 2006 | 04:01 PM

#17

Remmy

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Joined: Jan 2005

Posts: 11,248

From: Charleston

RE: o2 sensor purpose

No no. The 02 simulator splices in righ tbefore the sensor itself. Do not cut the wires. Shave the wires and then wire it up.

Aug 10, 2006 | 01:51 AM

#18

AgentofDarkness

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Joined: Jan 2005

Posts: 5,180

From: Chicago, Illinois

RE: o2 sensor purpose

Quote:

ORIGINAL: Chimera02EX

Yes, not directly, but if you take it out you will have a CEL on all the time which will make your car run rich.

I've never heard of the secondary O2 sensor bieng in the feedback loop for the A/F ratio. I don't think that it would help your emissions by running your car rich if the 2nd O2 sensor is disconnected. When you disconnect the 2nd O2 sensor the computer doesn't know its disconnected it just knows that there is a 0v signal coming from it. If the cat is actually not working (which is what the 2nd O2 sensor tells the PCM) then giving more fuel would just make the emissions worse. If you could explain how the 2nd O2 sensor works in the feedback loop it would be much appreciated by me.