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Old 12-31-2009, 11:16 AM   #11
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Originally Posted by Erik View Post
Also check the coolant temp sensor- a bad temp sensor might make the ECU think the engine is still cold even after it warms up and be making the mixture too rich for a warm engine.
THAT's a good thought Erik....will keep in mind, IF the O2 sensor doesn't do the trick.
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Old 01-11-2010, 07:22 AM   #12
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Here's what I did,

I'm having the same, I just unplugged my 02 & the stuttering went away. Now looking for an inexpensive sensor.

Dave
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Old 01-11-2010, 11:33 AM   #13
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jmf,

Looks like that link you posted is the least expensive price I've found!

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Old 01-13-2010, 10:51 AM   #14
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Got a 4-wire o2 sensor, and the 4-wire plug for it to plug into (to the ECU).

Does anyone have wiring info on going from a 5-wire (VX engine) to a 4-wire (D15B engine) o2 sensor? Already have the P28 ECU installed (which is why I've had a consistent CEL with the 5-wire o2 sensor).

Please and thank you!
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Old 01-13-2010, 08:24 PM   #15
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Never mind....did some serious searching and found it on Honda-Tech.
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Old 01-14-2010, 04:09 AM   #16
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That could be something that's useful to others who have searched this site and found your question. Can you post the answer and/or the Honda-Tech link that you found?
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Old 01-14-2010, 05:57 AM   #17
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I don't know if this would change as the engine heats up, but mine was running poorly until I changed the engine grounds. The old grounds were hardly functioning. It's also a cheap project and a lot of the sensors need good grounds.
Changed the engine grounds? How did you do that? Not just cleaned them but rewired?

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Old 01-14-2010, 11:53 AM   #18
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That could be something that's useful to others who have searched this site and found your question. Can you post the answer and/or the Honda-Tech link that you found?
Here's where I found the 5-wire to 4-wire o2 sensor info...go to post #34:

http://www.honda-tech.com/showthread...=295330&page=2

We're doing it now, will advise if it actually works!
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Old 01-22-2010, 06:17 AM   #19
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We're (some of us anyway) on the edge of our seats. How'd it go?
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Old 01-27-2010, 05:29 AM   #20
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OK...the surgery went better than expected (it worked). A lot of my projects end up with one or more of us wringing our hands, gnashing teeth, excessive beer drinking, etc.

This actually worked the first time...just follow the instructions on the Honda-Tech link above...NO MORE CEL! Turned out the coolant sensor was bad as well (thanks to Erik for that tip), and we replaced plug wires and dist. cap too.

Runs like a top, idles where it's supposed to (no hunting) and the VTec kicks in around 3500rpm. That extra 37HP DOES give it a little more zip...now I just need to keep saying the Gassavers mantra, and keep my foot out of it. Last tank was in the high 30s, I know I can hit the 40s with a little more mental conditioning.

Supposed to get my rebuilt cat converter back for my `04 Insight tomorrow, so ALL of our cars will be driveable at once! THAT hasn't happened for a while.......
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