JT4x4

The Mud Pit => Wrenching => Topic started by: Axle on October 14, 2008, 02:36:23 PM

Title: Check engine light
Post by: Axle on October 14, 2008, 02:36:23 PM

Yup, I got the dreaded yellow light this morning.  I'm going to borrow an OBD II from one of the guys in my office, but I've never used one before. 

Title: Re: Check engine light
Post by: rocket on October 14, 2008, 03:24:05 PM

plug it in, it will tell you your code, then go from there!

Title: Re: Check engine light
Post by: Axle on October 14, 2008, 04:24:57 PM

Where do you plug it in on a Jeep?

Title: Re: Check engine light
Post by: Seabee_BUC on October 14, 2008, 05:23:56 PM

You should still have a diagnosic port under the driver side dash somewhere...   ???

Title: Re: Check engine light
Post by: CnoteTJ on October 14, 2008, 05:51:59 PM

to the left of the steering colum, should be able to go online and type in the code, let me know if you need help

Title: Re: Check engine light
Post by: Axle on October 14, 2008, 06:21:33 PM

Thanks!

Title: Re: Check engine light
Post by: CnoteTJ on October 14, 2008, 07:51:29 PM

not a problem...

Title: Re: Check engine light
Post by: RnnngTrails on October 14, 2008, 08:37:28 PM

the one at advance tells you what the code is as well. I'll be glad to accompany you up there if you so decide.  ;)

Title: Re: Check engine light
Post by: kirksjeep on October 14, 2008, 08:48:25 PM

Advance and Auto Zone are not supposed to clear codes ( but I have heard that they do), they just read them.  Some code readers only read the codes.  I have one that will read the codes, tell you what the code means right on the screen,and erase codes.  If you need me to bring it into work let me know.

Kirk

Title: Re: Check engine light
Post by: Axle on October 14, 2008, 11:22:14 PM

P0442 and P0456.  EVAP Emission Control System Leak (Small), and EVAP Emission Control System Leak (Very Small).  My friend cleared it for me.  It means I either didn't install my gas cap enough, or I have a small hole somewhere in my fuel delivery system.  Whatever...  :P

Title: Re: Check engine light
Post by: rocket on October 14, 2008, 11:49:09 PM

your gas cap can leak, as well.  You will need all codes clear for your next emmisions check.  might as well figure it out now.  besides, when the light comes back in (it will unless you fix the prob), you won't know if another, more serious code comes in (there is only one CEL).

Title: Re: Check engine light
Post by: RnnngTrails on October 15, 2008, 12:56:08 AM

I got the same one earlier. I shut my gas cap tighter, and cleared it. It hasn't come back since. Usually it's just someone limp wristing the cap. Seeing as Justin got the code, that wouldnt really surprise me. ::)

Title: Re: Check engine light
Post by: Axle on October 15, 2008, 03:25:17 AM

(http://www.mediabistro.com/agencyspy/original/bitch_slap.jpg)

Title: Re: Check engine light
Post by: Axle on October 15, 2008, 05:27:17 PM

It's back...   :'(

Title: Re: Check engine light
Post by: rocket on October 15, 2008, 05:37:17 PM

your gas cap could be bad.  some places will test it, or you can just get a new one.

Title: Re: Check engine light
Post by: Axle on October 15, 2008, 06:28:13 PM

I'll probably just take it to Midas and get them to do a diagnostic.  If they can figure out what is causing those codes to pop, then I can probably fix it.

Title: Re: Check engine light
Post by: Seabee_BUC on October 15, 2008, 08:05:51 PM

Did you possibly loosen your gas filler neck wheeling on Saturday? Bump your tank hard? You could be getting an air leak there. Also, maybe there is a vacuum leak under the hood somewhere?

Title: Re: Check engine light
Post by: mallcrawl on October 29, 2008, 07:19:25 PM

mine was runnung the same code for months

after the dealer replaced the vaccume pump for the gas tank, and the code came back I replaced the gas cap gasket and it hasn't returned since

Title: Re: Check engine light
Post by: Axle on October 29, 2008, 08:39:37 PM

I don't know...  It turned itself off at random and hasn't come back on yet.

Title: Re: Check engine light
Post by: BayouGold on October 29, 2008, 10:12:39 PM

i had that problem too. i reset the light with the reader at advance auto & haven't had it again