New Rubicon 2.0 CEL

[JJG]

Hi, I’m a new to the forum, but not Jeep having had few wagoneers and two TJ’s.
Wife wanted a new JL so we bought a 2.0 Rubicon on Friday the 28 th.
So far we love it, put over 450 miles on it already. I’ve read a lot of stuff on here and thought I would share what I found etc. in hopes it will help someone else.

Saturday we where out just riding enjoying our new Jeep and at 306 miles the CEL came on.
Ran fine, no obvious issues. Drove back to my shop and hooked up my Snap on scan tool.
Had a evap code. So I started checking and found this.

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[sdynak]

How on earth goes that get through any final tests/inspections.. One would think they run some basics on them to include the evap system. Good stuff posting your findings and sharing with the community.

 

[Rockreid]

That doesn’t make any sense. An open connection like that would have defintely thrown an EVAP code long before hundreds of miles. Are you sure that someone wasn’t poking around in the engine area or perhaps some prankster wasn’t messing around?

 

[Guy N Cognito]

That doesn’t make any sense. An open connection like that would have defintely thrown an EVAP code long before hundreds of miles. Are you sure that someone wasn’t poking around in the engine area or perhaps some prankster wasn’t messing around?

Maybe it previously made partial contact, but vibrates loose...

 

[FUHL]

Maybe it previously made partial contact, but vibrates loose...

It's not electrical it's vacuum or vapor vent line.

 

[JJG]

That doesn’t make any sense. An open connection like that would have defintely thrown an EVAP code long before hundreds of miles. Are you sure that someone wasn’t poking around in the engine area or perhaps some prankster wasn’t messing around?

The evap system doesn’t constantly check itself for leaks so it wouldn’t happen instantly.
From what I could find for information on this forum, The system checks for a leak at 3/4 of tank and at 1/4 of a tank for fuel. Makes sense since it was at just below 3/4 when the light came on.

 

[JJG]

Maybe it previously made partial contact, but vibrates loose...

My thought as well.
You can see where the plastic is polished on the end of the nipple.
Most likely the installer never put it on far enough to engage the lock on the fitting.
The vibration from use allowed the oring inside the fitting to polish the end before falling off.

 

[FWB FL]

What a great catch!!!

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