Question about 2004 Jeep Wrangler
Try posting why you ask this first
my guess, dash CEL glows, driving,
guess 2, you get it scanned and it shows a DTC error you forgot to tell here, then assume its a bad part, named per above.
first is to get the gas cap tight ( or new)
and then push reset on the scan tool.
then see if the undisclosed, DTC errors, goes away.
this is first. all cars 1996 to NOW.
unless building a EVAP leak down test system is fun. or easy.?? or guessing all parts in the system? why"
see TJ jeep here
posted over 300 times, read the EVAP chapter.
EVAP means in simple terms is GAS tank VENTING and Collection system. its a smog reduction system.
2003 is free to read.
chapter 25 "emissions"
page 15 answers your question.
Posted on Dec 08, 2016
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Posted on Jan 02, 2017
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