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post catalyst EFIE
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alpha-dog Offline
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Post: #1
post catalyst EFIE
I wondering if maybe post catalyst EFIE's are needed on my 2006 dodge ram. I looked up today the obd2 codes p209X. There for fuel trim on the rear o2 sensors.
Russ
11-12-2008 02:48 PM
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colchiro Offline
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Post: #2
RE: post catalyst EFIE
Are you sure about that code?

I don't see anything similar at http://www.obd-codes.com/trouble_codes/dodge or http://www.obd-codes.com/trouble_codes

It's very rare to need anything on the post-cat sensors, unless you have modified the intake and exhaust to flow more.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 03:23 PM
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alpha-dog Offline
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Post: #3
RE: post catalyst EFIE
http://www.myscantool.com/dtc/powertrain.html

It's on this web site - P 2096,7,8,9

Russ
(This post was last modified: 11-12-2008 04:00 PM by alpha-dog.)
11-12-2008 03:59 PM
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colchiro Offline
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Post: #4
RE: post catalyst EFIE
Ok, got it.
P2096 Post Catalyst Fuel Trim System Too Lean
P2097 Post Catalyst Fuel Trim System Too Rich
P2098 Post Catalyst Fuel Trim System Too Lean
P2099 Post Catalyst Fuel Trim System Too Rich

What code did you get? What's your efie offset voltage?

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 04:19 PM
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stl_hemi Offline
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Post: #5
RE: post catalyst EFIE
hmmm. They have the same voltage as the pre cat's. But..... The the trim numbers are 99%
The MV on the 2nd cat's is just as fast as the pre cat's. I've always been told the 2nd o2's monitor the cat's.

Paul
2004 Dodge Ram 2500 QC Hemi Off Road
5" of lift with 35" Super Swamper SSR's

Trucks forsale
Buying a 2010 Ram 3500 Mega CTD Smile
11-12-2008 04:36 PM
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colchiro Offline
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Post: #6
RE: post catalyst EFIE
The post cat o2's generally do monitor the health of your cats.

Unless you're throwing a code, I wouldn't worry about it. The post cat o2's aren't very fussy.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 04:40 PM
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alpha-dog Offline
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Post: #7
RE: post catalyst EFIE
I havn't had the faults yet. I read about someone else with a 2006 dodge that had them.
My EFIE is 130mvdc.
russ
(This post was last modified: 11-12-2008 04:51 PM by alpha-dog.)
11-12-2008 04:49 PM
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colchiro Offline
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Post: #8
RE: post catalyst EFIE
Ok, got it.

Give me a shout when you do then.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 05:05 PM
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stl_hemi Offline
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Post: #9
RE: post catalyst EFIE
I was thinking today to myself at work. Why can't we just take the rear o2's out of the equation altogether. Cause I get a rear o2 code once and a while. Why not spoof them and put a plug in the o2 hole pull them things out and just spoof them. Hell Hemi guys run catless all the time. Did it back on my 2002 WS6. I don't wanna go catless in this truck but I will spoof those o2's if I have to.

I have a feeling that those rear o2's do alot more on this ecm setup than just monitor the cat's. I have a feeling that if we put too much mv's in the front cat's the rear one's don't see it and toss them into a code or mess with the ecm to add or remove fuel and spark.

Paul
2004 Dodge Ram 2500 QC Hemi Off Road
5" of lift with 35" Super Swamper SSR's

Trucks forsale
Buying a 2010 Ram 3500 Mega CTD Smile
11-13-2008 02:50 PM
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colchiro Offline
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Post: #10
RE: post catalyst EFIE
That's called tampering with your emissions, which is a federal offense and is a decision you have to make.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-13-2008 03:10 PM
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