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I have a 2001 Jeep Cherokee, with the inline 6.
A couple weeks ago I posted a thread 2001 Jeep Cherokee Timing. Per
cmesadoin's response, he was absolutely correct by saying that there could
be many things associated with my loss of fuel mileage. :clap: :thumbs: As
I am now finding out, because I think I was way off by labeling my thread
timing.:doh:
Anyways, to get to the point. My check engine light finaly went off again.
And this time two error codes were triggered. P0442 and P0455. Small
EVAP leak and Large EVAP leak respectively. I also began to notice the
smell of gas fumes. Typically only in the morning when I first start the
vehicle and begin my drive(I live in south texas).
Courtesy of ALLDATA, I have the Diagnostic Test Procedures to narrow down
the root cause of my problem. I've checked the simpler causes, but at the
moment, I am unsure wether I can get a hold of a Evaporative Emission Leak
Detector (EELD). I was wondering if there was a simpler method? Or if
this problem is typically caused by one component over another?
Thank you.
DustyBub
Is EVAP the same as emissions? I know I should be helping but I'm just
curious if it's an emissions leak or maybe a vacuum sensor or something.
I'm very mechanical, but by no means a certified mechanic, which is why I
hang out here to see how much I can learn from all those who know more
than I do.
DBain
Same reason I'm hear for.
All I can tell you is that in my case the problem I'm having is with the
evaporative emmission system.
DustyBub
Are your vent valves and purge valves working, LDP test OK and have you
checked the hoses?
tbaxleyjr
How do I check for the suggestions you mentioned? I've been unable to get
my hands on an EELD.
DustyBub
Basically a smoke test - best done by a service dept or a qualified shop.
tbaxleyjr
