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P0402 after cold pipe upgrade

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Old Jun 13, 2022 | 01:14 PM
  #16  
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that you for the clarification. Much appreciated!
 
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Old Jun 13, 2022 | 03:45 PM
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UPDATE:

Crossing fingers this last go round resolved my issue. After removing both Hot side and Cold side and then reinstalling everything I unplugged both batteries for 15 mins. Then took a 65 mile test run. As of this message no CEL.

 
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Old Jun 13, 2022 | 05:12 PM
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seems like a good time to just unplug the egr and tune


sucks tho. i agree, upgrading the charge pipes is a fantastic upgrade.
 
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Old Jun 13, 2022 | 05:14 PM
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Originally Posted by honda250xtitan
seems like a good time to just unplug the egr and tune


sucks tho. i agree, upgrading the charge pipes is a fantastic upgrade.

believe me I've been doing my research on all that. I do live in CA so there is that. On the bright side, I do live in a SMOG Exempt county so I don't have to smog it every two years. Have no intent on selling either so that's a plus.

 
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Old Jun 13, 2022 | 06:03 PM
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Originally Posted by jrburcell
UPDATE:

Crossing fingers this last go round resolved my issue. After removing both Hot side and Cold side and then reinstalling everything I unplugged both batteries for 15 mins. Then took a 65 mile test run. As of this message no CEL.
I don't remember if it was suggested/recommended for the CAC pipe, but I do know that it was recommended to disconnect the batteries when swapping out my CAI for the S&B kit. I can say that I didn't disconnect the battery when changing out my CAC pipe though, and I have never gotten any CEL. Hope the disconnect was all it takes to correct yours!
 
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Old Jun 14, 2022 | 10:07 AM
  #21  
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Well shoot!

CEL came on while driving into work. Guess I need to actually start looking at a stuck EGR valve. Not sure how bad it'll be to drive on it this way so I'll park it till I can figure it out.

I'll keep working on it.

Cheers

JB
 
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Old Jun 14, 2022 | 11:39 AM
  #22  
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Clean your MAP sensor lately?
 
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Old Jun 14, 2022 | 06:07 PM
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I am going to say this hasn't been cleaned in some time.


Wondering what the EGR valve looks like...


 
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Old Jun 15, 2022 | 08:53 AM
  #24  
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just can't win, lol

Decided to take the truck to work and see if cleaning the MAP made any changes. Well it did but not in a good way. First thing I noticed was my Boost Gauge is now showing maxed at 40 psi. I am assuming I damaged it in the cleaning process.

 
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Old Jun 15, 2022 | 07:51 PM
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Originally Posted by jrburcell
just can't win, lol

Decided to take the truck to work and see if cleaning the MAP made any changes. Well it did but not in a good way. First thing I noticed was my Boost Gauge is now showing maxed at 40 psi. I am assuming I damaged it in the cleaning process.
Did you do a battery reset after you cleaned it?
 
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Old Jun 15, 2022 | 09:51 PM
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yes and no change.
 
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Old Jun 16, 2022 | 07:15 PM
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UPDATE:

Slapped a new MAP sensor in and the boost gauge issue is resolved!

 
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Old Jun 16, 2022 | 10:00 PM
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For the benefit of those not familiar with cleaning a MAP sensor, how did you clean the original one?
 
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Old Jun 16, 2022 | 10:04 PM
  #29  
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Used CRC and a new clean micro towel and rubbed the gunk off. dropped some CRC inside, swished it around and waited till it was dry.

Not a common thing to fail in my experience.

 
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Old Jun 16, 2022 | 10:22 PM
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Originally Posted by jrburcell
Used CRC and a new clean micro towel and rubbed the gunk off. dropped some CRC inside, swished it around and waited till it was dry.

Not a common thing to fail in my experience.
Which CRC product? A chemical clean should have worked, but I think there is at least one post in the last few months where it didn't.
 
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