High CO output

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Nov 14, 2002 | 06:51 PM

ezmoney92

Thread Starter

Racer

Joined: Apr 2001

Posts: 318

Likes: 0

From: Tinley Park, IL.

High CO output

Hey guys, any idea on what could cause a high CO output ( 33 gpm ) and an HC output of 1.6 and not set any codes? Could my ECM be on it's way out? It does have the stock chip in it. :seeya

Nov 14, 2002 | 07:27 PM

Wildride

Burning Brakes

Joined: Sep 1999

Posts: 786

Likes: 31

Cruise-In II Veteran

Re: High CO output (ezmoney92)

An bad injector (or two, or three, or...) can do it. Have you put a scanner on the car? If so what kind of BLM reading did you get?

Nov 14, 2002 | 11:41 PM

Goody

Le Mans Master

Joined: Oct 2000

Posts: 6,362

Likes: 30

From: Oak Harbor WA

Re: High CO output (Wildride)

Could be a faulty O2 sensor. Still the originals?

Nov 15, 2002 | 07:14 AM

ezmoney92

Thread Starter

Racer

Joined: Apr 2001

Posts: 318

Likes: 0

From: Tinley Park, IL.

Re: High CO output (Goody)

The car has new O2's and it's running great. I'm gonna try scanning it today and see what comes up. :seeya

Nov 15, 2002 | 09:35 AM

ZylaRace

Drifting

Joined: Mar 1999

Posts: 1,931

Likes: 1

From: Norcross GA

Re: High CO output (ezmoney92)

High CO counts = incomplete combustion
Running too rich
Bad catalytic converter
Bad air diverter valve

Nov 15, 2002 | 09:40 AM

Goody

Le Mans Master

Joined: Oct 2000

Posts: 6,362

Likes: 30

From: Oak Harbor WA

Re: High CO output (ezmoney92)

Okay. I take it you are at normal operating temp and not in open loop at this time? Could be a faulty injector(s). You could do the simple leak check on your injectors to verify they aren't passing excess fuel. But you would normally experience a hard start situation.
Need a scanner to see what is going on though.

Nov 15, 2002 | 06:32 PM

ezmoney92

Thread Starter

Racer

Joined: Apr 2001

Posts: 318

Likes: 0

From: Tinley Park, IL.

Re: High CO output (Goody)

Well I scanned the car and the only thing it's telling me is a faulty airbag ground and a bad knock sensor. Could the knock sensor be throwing off my timming and fuel curve enough to cause me to run rich? Off to the parts store I go. :seeya

Nov 15, 2002 | 08:48 PM

Goody

Le Mans Master

Joined: Oct 2000

Posts: 6,362

Likes: 30

From: Oak Harbor WA

Re: High CO output (ezmoney92)

You need a scanner that will read what the O2 sensor is putting out or what the BLM's are at. Datamaster or one of the free downloadables might assist there.
I must warn you that I am new at this stuff though.....makes me yearn for a BB C3... :seeya