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Old 06-12-2012, 10:49 PM
BigMac76 BigMac76 is offline
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Default Emissions question...

Ok so driving the car here lately, even after the plug change, I've been noticing the car is running a bit on the rich side. Noticed some black on the back of the car and the smell of the exhaust, as much as I love it, is the main indicators. Also noticed that every so often sitting at a light, it will idle a bit on the rough side. So I hooked up the scanner and noticed that it's throwing a P0161 and it's pending as well. It's the O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 2, post cat O2 sensor.

Now I know the pre-cat o2 sensors can create a lean or rich condition as well as "limp mode" rich. Now will/can the post-cat sensors do the same and cause the same condition creating my symptoms?
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Old 06-12-2012, 11:28 PM
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My84Z My84Z is offline
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Absolutely. Use the scanner to see if they are reading switching etc
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Old 06-13-2012, 12:49 PM
BigMac76 BigMac76 is offline
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Got a cheap scanner that basically just reads the codes. Will pull the plug and check voltage and resistance through the sensor as well. From the looks of them they've been in there a while so bet it couldn't hurt to change it.
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Old 06-13-2012, 07:04 PM
Slowhawk Slowhawk is offline
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By the time you replace a few useless sensors it would pay for someone like myself to just tune the car and delete that useless crap. And the car will probly run better anyways.
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Old 06-13-2012, 08:36 PM
BigMac76 BigMac76 is offline
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Unfortunately this is my daily driver so downtime with the car is costly to me right now. Workload still pretty heavy for ya man or do you have some openings coming up in the near future? Thinking I might have to give you a call here or even swing by sometime with it.
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Old 06-14-2012, 05:41 PM
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Swing by dons shop. He will look at it. It could throw a code for one sensor and another one(upstream o2) is just fouled. And without proper tools and the knowledge to use them. You will throw good parts at it to not fix the problem. Causing more downtime and money.
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Old 06-21-2012, 10:46 PM
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Quote:
Originally Posted by Slowhawk View Post
By the time you replace a few useless sensors it would pay for someone like myself to just tune the car and delete that useless crap. And the car will probly run better anyways.
I WILL be calling you, Don. Had some issues with the car dying out today, seems like a fuel pump issue, or something electrical is heating up and cutting out causing the car to choke itself out. The car will be running fine for awhile then all of a sudden it'll seem like it's starting to choke itself out, not sure if it's a shortage of gas, or what exactly. But when it happens I have to turn the key off, no lights on the dash, for a few and it'll start back up. Seems like the longer I wait between starting it up after it dies out, that she takes longer till the next episode. It also seems like it happens a lot more frequent when it's as hot as it is right now. Not as prevalent as when it's cooler temps outside.

Best time for me would probably be Saturday around noon or so. Have to cut down to 1 car again...the Rogue is fun to drive, but lacks some sack lol.
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