Check Engine After Catch Can Install??? - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 7 (permalink) Old 02-14-2014, 12:32 PM Thread Starter
The Right Kind Of Wrong
 
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Check Engine After Catch Can Install???

I installed my oil catch can 2 weeks ago and after the install the check engine light came on. I scanned it recently and these are the codes that came on

P0174

P1071

P0300

Any reason why these would come on after a catch can install?

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post #2 of 7 (permalink) Old 02-14-2014, 02:04 PM
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The first two are lean codes, and the last one is a misfire code. There's likely a vacuum leak at one of the connections. Presuming that you installed the one end to the driver side valve cover rear hose barb and the other end to the intake manifold hose barb near the the MAP sensor and EVAP solenoid, then it's probably a bad connection or a leak at the catch can. If they're all installed and tight, there should be no leakage. However, just to confirm, you aren't trying to use a catch can with a breather, are you?

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post #3 of 7 (permalink) Old 02-14-2014, 11:10 PM
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Assuming you have a sealed catch can - many people leave the drain in the open position mistakenly.. The screw type is closed when the screw thread is showing the most, opposite what would seem normal.

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post #4 of 7 (permalink) Old 02-17-2014, 10:35 AM
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Good tips, so far. With a lean code, you should be able to HEAR the air sucking in. That will help you track down the leaking location.

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post #5 of 7 (permalink) Old 02-17-2014, 11:52 AM
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Interesting codes to be related to the catch can, a leak that big that could cause lean codes should be fairly noticeable in you engine bay. What type of catch can was this ?
and like somebody else said, make sure your drain is fully closed, you should be able to hear the hissing if it was that bad, if this fails, put the stock hose back in the PCV and intake tract, disconnect the battery for about 2 minutes or so, then take her for a drive and see if you can replicate the issue.

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post #6 of 7 (permalink) Old 02-17-2014, 12:50 PM Thread Starter
The Right Kind Of Wrong
 
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Problem solved everyone all the lines were tight and finally it was a drain plug that was exposed underneath the catch can that I didn't see lol. I found the screw that came with it to close it cleared the code problem solved. Sometimes it's something so stupid. Thanks for all your help guys

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White 2009 G8 GT 6.0
Current Mods - 20% Window Tint, Roto-Fab Intake, BBK Shorty Headers, Roto-Fab Engine Covers, Corsa Catback Exhaust, Viper 5904 Remote start & Alarm with GPS Smart Start. GXP Rear Diffuser. Custom double din with Pioneer Avic 940 Unit with Folick Controller. Custom Box with JL Audio 8W7, Escort 9500(Red) Radar with Blend mount, 19 inch Flat Black MRR GT7 Wheels, Cross drilled & Slotted Rotors/Ceramic pads.

Future Mods - Cams, Brembro Brakes, Solo High flow Cat
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post #7 of 7 (permalink) Old 04-21-2019, 11:12 AM
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This just happened to me also. I'll check for leaks, and the drain plug.
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