faulty evap help
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Cleveland, OH
Year: 2001
Model: Cherokee
Engine: 4.0
My xj keeps throwing code p0443 and the scanner says "check for a failed evap solenoid, faulty wiring or a loose or damaged connector"
I know a little about a lot but my knowledge of evap systems is almost nonexistent. Any ideas on where to start looking/doing. Thanks
I know a little about a lot but my knowledge of evap systems is almost nonexistent. Any ideas on where to start looking/doing. Thanks
Possibly your EVAP valve/canister. Do you have trouble filling up at the gas pump?
http://www.oreillyauto.com/site/c/de...lve!s!solenoid
http://www.oreillyauto.com/site/c/de...lve!s!solenoid
Last edited by Muaddib420; Oct 24, 2012 at 04:13 PM.
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Cleveland, OH
Year: 2001
Model: Cherokee
Engine: 4.0
Canister as in the charcoal canister, by the gas tank? And nope, no trouble filling up, that's the jeeps favorite thing to do haha. But I have noticed my mileage has been even worse than normal since the check engine light has been on
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
You should hear and feel the evap solenoid clicking when the PCM goes into closed loop. The solenoid is mounted against the firewall on the passenger side. Check it out.
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
There should be an emissions label on the driver's side firewall that shows the evap system plumbing.
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Cleveland, OH
Year: 2001
Model: Cherokee
Engine: 4.0
It was the purge valve. It was unplugged, I must have messed with it last time I was under the hood. I turned off the check engine light after reconnecting it and it hasn't thrown the code since. Thanks guys, you saved me from an annoying and embarrassing trip to the mechanic
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