P1494 cel code??
05-24-2009 | 08:23 PM
#1
Thread Starter
Newbie
Joined: Nov 2008
Posts: 19
Likes: 0
Model: Cherokee
P1494 cel code??
Went through my vaccum lines cant find any leaks I know the the filler neck has cracks in it. Could the filler neck to the gas take be the problem? Anyone else have this problem.
05-25-2009 | 02:54 AM
#2
CF Veteran
Joined: Apr 2009
Posts: 18,786
Likes: 13
From: CT.
Year: 88
Model: Comanche (MJ)
Engine: 4.0 HO
The filler neck has cracks than that should be replace. And yea thats probably throwing the code
05-25-2009 | 07:38 AM
#3
Seasoned Member
Joined: Apr 2009
Posts: 470
Likes: 4
From: Nashville TN
Model: Cherokee
It's an LDP circuit code... meaning that the PCM hasn't "seen" the diaphragm-switch in the LDP change state in XXX drive-cycles.
Get the leaks shored-up first, then clear the code and take a long drive. Let it cool overnight, then another long drive. Make sure the fuel-level is between 1/4 and 3/4... no more, no less.
Then go to AZ (or whoever read the DTC for you) and see if you have passed your EVAP OBD readiness tests... if those tests have passed, then you know it's fixed.
Get the leaks shored-up first, then clear the code and take a long drive. Let it cool overnight, then another long drive. Make sure the fuel-level is between 1/4 and 3/4... no more, no less.
Then go to AZ (or whoever read the DTC for you) and see if you have passed your EVAP OBD readiness tests... if those tests have passed, then you know it's fixed.
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