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Jun 10, 2006 | 09:50 PM

wjmac40

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Intermediate

Joined: May 2006

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From: Gilbert Az

codes

Have a 89 that is giving me code 13 and 44.can't get car through emissions. Question is, I changed the 02 sensor on the drivers side but this code is reading as follows 13 =oxygen sensor 0s2 circuit open-left side on two sensor system and 44 oxygen sensor os2 left sideon 2 sensor systemlean exhaust indicated
Will this make the car run and then seem to miss?And where is the other sensor?

Jun 10, 2006 | 09:56 PM

steve1ph2

Burning Brakes

Joined: Jun 2004

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From: richardson tx

i can send you the pages with diagrams and trouble shooting charts for both codes. they will be in the pdf format.

Jun 10, 2006 | 10:00 PM

RRT vette

Le Mans Master

Joined: Feb 2006

Posts: 8,753

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From: Louisiana

Quote:

Originally Posted by wjmac40

89 only has one O2 sensor. From what I have read you have a open/short in you O2 circuit. I would check connection at the ECM and at the O2 sensor. BTW where did you get the 13 and 44 info from? The O2 sensor only effects running condition after it starts sending signal to the ECM (closed loop). A bad circuit or sensor will make the car idle and run rough (rich or lean). The exhaust has to get to 600*f and engine temp around 140*to go into closed loop. At long enough idle it will switch between open and closed loop frequently. If you have headers they make a three wire O2 sensor that is heated to make the ECM stay in closed loop more than open loop.

Jun 10, 2006 | 10:08 PM

wjmac40

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From: Gilbert Az

used the chilton method jumping A and B turning on key and counting the engine light flash

Jun 10, 2006 | 10:10 PM

wjmac40

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From: Gilbert Az

got the chilton book and trying to follow that

Jun 10, 2006 | 10:17 PM

Aardwolf

Race Director

Joined: Jun 2004

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From: WI

I keep getting a code 13 on mine as well. The o2 is good, I tried a few different ones. My next step is to check continunity from o2 pigtail to ecm.

Jun 10, 2006 | 10:22 PM

wjmac40

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From: Gilbert Az

tring to get this car through emissions but carbon monoxide fails required is 15.00 and I'm getting 60.00
hydrocarbons is 1 point over but close

Jun 10, 2006 | 10:28 PM

RRT vette

Le Mans Master

Joined: Feb 2006

Posts: 8,753

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From: Louisiana

Have you tried to disconnect the battery or take the ECM fuse out to reset the codes? If you used a good O2 sensor and still getting the codes, then wiring would be the next step. The Chiltons will give some info but is not year specific and doesn't cover the proper troubleshooting steps. To correctly find and fix the problem you will need a 89 FSM (factory service manual). You might pm Agent86, and he would probably be glad to send you the troubleshooting diagram, from a 86 which is about the same, for the code 13 and 44. With that info it will be easy to find the problem. Yes, incorrect O2 signal to the ECM will make the emissions way off.