Mishimoto
Well-Known Member
- First Name
- Mishi
- Joined
- Jul 5, 2018
- Threads
- 16
- Messages
- 357
- Reaction score
- 422
- Location
- Wilmington, DE
- Vehicle(s)
- Jeep Wrangler JL
- Thread starter
- #166
Interesting, if the PCM thought the gas cap was loose, that would indicate low EVAP pressure or flow. Any CEL with that warning or just the gas cap light?I maybe spoke too soon. Had to drive 140 miles to pick up kids at summer camp this afternoon. About 10 minutes into the drive my "Gas Cap loose" alarm came on. Pulled over and checked it; and it was fine. On start it came back immediately. At camp turned off vehicle; got kids; and on startup the alert came back on. Drove back 60 miles; stopped for dinner. After dinner on start it didn't come back..... Drove 30 minutes home with it off.
It is possessed....
This is the code that we got when there was too much restriction in the system and the CCV pressure sensor read too low. Try moving the line I circled out from under the hose clip; it looks like it might be pinching the line a little. Please also try a battery-disconnect reset to clear the code and let me know if it comes back after that.Alrighty so was able to scan the jeep I'm getting code, P2C90, quick googling seems to say it's a crankcase ventilation hose A disconnected. Checked the catch can all hoses look tight and worn clamps seem good as well, going to clear it and see if it comes back. The uconnect app notified me my jeeps heath report was available that's when it reported the CEL light was illuminated.
@Mishimoto i just checked my oil catch can after a week of use, maybe 200-300 miles, the can is completely dried. Even the filter is dry as new, like no oil was running’s through.
How much the can collects is going to vary widely based on driving conditions. 2-300 miles isn't really enough to tell anything, especially on a new vehicle with low miles. We usually recommend checking at 1,000 miles and going from there for drain intervals.CEL came back on this morning. So I've disconnected the catch can, cleared the code, and will monitor for a few hundred miles.
As my catch can is still bone dry after almost 800 miles I also question it's usefulness long term versus the hassles thus far with CEL/Gas cap loose warnings.
Our JL got driven a lot during testing for all of our products, so our mileage is currently over 10,000 mi. Below is what we were catching after 1,000 miles with about 1,500 miles total on the engine and then what we were catching at the same interval with about 10,500 miles on the JL. Most of the content in the first collection is water vapor, with about 10ml of oil and fuel. Winter weather produces more condensation in the blow-by.
The second collection was done in the summer and shows ~25ml of oil.
Overall age, health, and build tolerances of the engine also play a big role in how much blow-by is produced. This catch can is designed to protect the engine over the life of the vehicle, and as the engine wears, it's going to produce more and more blow-by. Give it time and it will pay off.
As for the CEL with the S&B intake. We're going to have @Minty JL in next week to check things out in person. At this point, we've been running our intake prototype and the catch can on our JL for several thousand miles without issue, so we're going to look at what differences may be causing the issue.
If anybody with the EVAP CEL and the S&B intake wants to swap back to the stock intake and let us know the results, that would also be much appreciated, but we should have a definitive answer for you either way next week.
Thanks,
-Steve
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