Question about 2002 Jeep Grand Cherokee Limited
Telling me I have a large and small leak(s) detected in evap system. I don't even know where to start looking for problem. any help
Bryan, 1st thing to try, remove gas cap and on the rubber O-ring wipe a little Vaseline( if seal is obviously worn or damaged replace it) and check fill spout for corrosion and clean. Then delete codes and see if they come back. Check the attached links,instruction and guides, Good luck
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2001 Jeep Cherokee Sport Large EVAP Leak
03 Jeep Evap P0442
DTC EVAP P0442 P0455 P0456
Posted on Apr 16, 2016
Po442 is evap system leak
check intake and all vacuum hoses for leaks
check evap canister and purge valve
Po445 is evap canister purge valve short circuit
check wiring and connection
Posted on Apr 16, 2016
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Posted on Jan 02, 2017
you need a smoke machine to fill evap sysytem and it will leak smoke out where the leak is to many tight places to look without
Posted on Sep 26, 2009
open hood and ck for broken vacuum hoses going to the purge valve(2 vacuum ports and a wiring connector)
on the drivers side between airbox and firewall
if good remove driver side rear tire and inspect hoses next to the gas tank and 3rd, the canister is in that wheel well also insp for cracked hoses there also, been working for jeep 12 years i charged people about 1 hour to correct this probem.
Posted on Dec 18, 2009
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