Loud hissing, broken evap line, where does it go?

Stonent · Oct 18, 2015

I've been getting p0441 off and on recently but I just assumed it was a small crack leaking somewhere, but the last 2 weeks I've had a few instances where the jeep wants to stall where the ETC ) Z ( indicator is flashing and traction control light is stuck on. If you try to accelerate from a standstill it will shudder and have trouble going until you get to about 25mph and then seem ok. The idle will stay steady around 1500rpm.

I found a hard plastic hose coming from what appears to be an evap solenoid (behind the air filter box) that is just torn in half. The part that goes to the solenoid is in tact but I cannot find where the other end is.

When the engine is running I can hear loud hissing but cannot pinpoint the location.

I put tape over the end that I found to hopefully help in some way.

So where does the other end terminate? I can't find it.

Edit: To clarify, this is the hard plastic hose that heads in the general direction of the intake manifold, but the break occurred close to where the big air box hose is.

Stonent · Oct 18, 2015

I finally found it. I couldn't do much checking last night because the engine was hot. Today I was able to reach around near the intake and find it. I got a piece of fuel hose from Oreilly's and repaired it.

However the ETC problem did not go away. After fixing this. I started it and left it running for about 5 minutes and then the engine suddenly shuddered and ETC started flashing again and traction control lit up solid.

I should note, I am not being speed limited in this mode. However if I push the shifter to the right, no matter what speed I'm going, the dash says 6 and will not let me bump stick it down. And there are no codes being thrown.

Stonent · Mar 27, 2016

Well the bucking never went away, and turned out the hose came off again. I stuck a AAA battery in the end of the hose that comes from the firewall and it made the check engine light go away, but it's permanently holding a P0440 and P0441 in pending codes. My emissions status check also permanently shows "Not Ready" for EVAP system.

Today I investigated again and found another piece of broken hard hose leading down, but I still have not been able to find where on the engine it connects to. The hose went past the air intake hose, past the coolant hose and apparently past the IMRC but I'm not sure.

I can't find a single diagram that shows how it connects or where. All diagrams I keep finding are for other vehicles.

Stonent · Mar 27, 2016

Basically the long hose that comes out of the evap solenoid and goes past the air filter box, I can't find its final destination.

kojack · Mar 27, 2016

Do you have the engine cover off?

Stonent · Mar 28, 2016

If you mean the cosmetic "Dual VVT" cover, yes.

Terasec · Mar 28, 2016

dont quite get which line your referring to
can you post a pic?
or point out which line in this pic?

kojack · Mar 29, 2016

Stonent said:
If you mean the cosmetic "Dual VVT" cover, yes.

Yes that's the one as there are a bunch of vacuum hoses under there. Trying to diagnose this one is trial and error .

Stonent · Apr 4, 2016

Terasec said:
dont quite get which line your referring to
can you post a pic?
or point out which line in this pic?

None of the above. I did find it yesterday. It goes from the evap solenoid under the air cleaner hose to a connection point right past the throttle body on the intake manifold.

Stonent · Apr 4, 2016

Oh if you plug the hose leaving the evap solenoid, the stored DTC will go away for a while but you'll get more pending ones.
P0440
P0441 < - new
A code I can't remember that had a 7 in it that said the idle was too high.
B2aaa This code wasn't really able to be deciphered. B is body.

I was getting some ESP/BAS TCS issues recently as well. Finally the P0440 and P0441 codes stored as hard codes and not pending.

I was not able to reconnect the two lines because the hose I had was not long enough. So this time I plugged the intake side to hopefully fix the throttle issue.

Loud hissing, broken evap line, where does it go?

Stonent

Stonent

Stonent

Stonent

kojack

Stonent

Terasec

kojack

Stonent

Stonent

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