code 0441 HELP

Cali KJ · **Posted:** Fri Jan 08, 2010 10:44 pm

Have a code 0441. :furious:

Evaporative emission (EVAP) system – incorrect flow detected What to check? New cap from auto parts store and hasn't seemed to work. :banghead:

Any and all help would be greatly appreciated.

EDIT: I have no idea why i put it in General Discussion???
I did find this http://www.obd-codes.com/p0441 But honestly i know nothing about the evap system. Where is the purge solenoid and vacuum switch located?

JeepinJarhead03 · **Posted:** Sat Jan 09, 2010 1:06 am

easiest thing to check make sure ya got ya gas cap on

there's also breather hoses between the top of the gas tank and the filler that seem to start to swell and dry rot after about 4 years and are pretty much toast after 8

those two things are very typical of the evap system

whether it's specific to that code, i have no idea

purge sel is on the drivers fender to the front of the battery if it's where mine is, seems to be a very typical location for them , wranglers was in same spot

it's roundish, about the size of a typical table pepper shaker has a little cross ontop of it with a pin hole lookin thing, makes constant clicking when the engines running

harsh20 · **Posted:** Sat Jan 09, 2010 1:12 am

the solenoid is beside of the battery. trace the rubber hoses back to the gas tank. it could be a cracked hose rather than the solenoid itself. normally a cracked hose gives you a po442. by close attention to the small twin hoses connected to the firewall. I find my leaks in the hoses in the rear just above the rearend.

JeepinJarhead03 · **Posted:** Sat Jan 09, 2010 1:24 am

extend the rear end breather while ya at it

hehe

Cali KJ · **Posted:** Sat Jan 09, 2010 2:08 am

Yeah i'll need to do some serious investigating tomorrow. Been going on for awhile now and now it NEEDS to be taken care of. darn CA emissions!!! :furious:

I came across this to so i'll be looking in to it http://www.jeepkj.com/forum/showthread.php?t=35504. Is there any way to test the purge sel.?

JeepinJarhead03 · **Posted:** Sat Jan 09, 2010 2:14 am

you can take it off and use jumpers positive and ground, it should open when you touch the positive and close when you remove it, it'll make a click sound too

you can actually see the dooda go down and come back up

Cali KJ · **Posted:** Sat Jan 09, 2010 2:32 am

Really that simple? :BANANA:

Dang that would be really nice if thats all it is.

JeepinJarhead03 · **Posted:** Sat Jan 09, 2010 2:45 am

evap issues are rarely ever 'that' simple

but

it's somewhere to start

half the time it mysteriously goes away after the next time someone fills up with gas

part of that leak detection system detects the pressure inside the gas tank, if the cap isn't venting properly, it'll throw a code

Cali KJ · **Posted:** Sat Jan 09, 2010 2:54 am

JeepinJarhead03 wrote:

evap issues are rarely ever 'that' simple

but

it's somewhere to start

half the time it mysteriously goes away after the next time someone fills up with gas

part of that leak detection system detects the pressure inside the gas tank, if the cap isn't venting properly, it'll throw a code

LOL i meant checking the purge sel. But yes some where to start for sure. I'll post up more when i figure this dang thing out. All other input is always welcome.Thanks!

JeepinJarhead03 · **Posted:** Sat Jan 09, 2010 3:05 am

ahh

yeah, it's easy enough, it basically acts like a speaker when you stick a hot wire to it and the speaker sucks in

Cali KJ · **Posted:** Sat Jan 09, 2010 6:53 pm

Ok as of now i have NO active codes. Have checked with a DTS advanced diagnostics code reader. I do have a question about active drive cycle for the KJ. Meaning if i have cleared the codes, how many miles of diving before it the ODBII system has run all its checks? As far as what i did.. Checked all hoses, Unplugged purge solenoid and checked connection wires. Unplugged fuel pump connection (i think thats what it was?) Center front side of gas tank? There was lots of dry dirt in plug housing. Cleaned with comp air. All looks to be ok. Ran code reader and no codes.. :BANANA:

Thanks for the help guys.

harsh20 · **Posted:** Sat Jan 09, 2010 8:41 pm

Cali KJ wrote:

Ok as of now i have NO active codes. Have checked with a DTS advanced diagnostics code reader. I do have a question about active drive cycle for the KJ. Meaning if i have cleared the codes, how many miles of diving before it the ODBII system has run all its checks? As far as what i did.. Checked all hoses, Unplugged purge solenoid and checked connection wires. Unplugged fuel pump connection (i think thats what it was?) Center front side of gas tank? There was lots of dry dirt in plug housing. Cleaned with comp air. All looks to be ok. Ran code reader and no codes.. :BANANA:

Thanks for the help guys.

if in fact you have a small leak still, it will so up again in about 50 miles. normally during an acceleration. best of luck.

code 0441 HELP

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