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Unread 02-12-2015, 09:27 AM   #1
PoorOtis
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1998 XJ Cherokee 
 
Join Date: Mar 2014
Location: Rockwall, Texas
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98 ZJ scan INCOMPLETE?

Repaired a Fault Code(P0301 cylinder #1 Mis-fire) with new tune up and new injector(off ebay for $13.) now shows No Code..drove 55 miles..then to inspection station,they pluged in code reader..shows No Codes..but..says Evap System & 02 Sensor Heater INCOMPLETE!!?? How long do I have to drive it for the computer to reset its self..or is there another way around this to get the old jeep inspected?? All Ideas will be helpful! Thanks.

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Unread 02-12-2015, 09:57 AM   #2
MrRoundel
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1998 ZJ 
 
Join Date: Jan 2007
Location: California
Posts: 648
It may be that you need to go through 40 warmup cycles to complete the monitoring, and reset the computer. This, according to the FSM. A mechanic with a high-end bi-directional scanner could probably get around this, but I don't know if there's another shade-tree-mechanic-friendly way. Some mid-level scanners do have indicator lights that show, via red, yellow, and green LED's, whether you are ready to pass an emissions inspection. This is based on the monitored systems either failing (Red), being incomplete (yellow), and all monitoring completed and passed (Green). Perhaps the ones that you can borrow from Autozone have this capability? I know this because I just bought a used one over at "da Bay", that has this feature. Good luck.
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Unread 02-13-2015, 07:29 AM   #3
coralman
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1998 ZJ 
 
Join Date: Jul 2010
Location: florida
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I'd check the wiring to the 02's just for drill.
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Unread 02-13-2015, 07:34 AM   #4
ZeeJay1997
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1997 ZJ 
 
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Drive cycles

See attachment
File Type: pdf chrysler_drive_cycle.pdf (34.7 KB, 31 views)
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Unread 02-13-2015, 10:00 AM   #5
MrRoundel
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1998 ZJ 
 
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Quote:
Originally Posted by ZeeJay1997 View Post
See attachment
Much better than 40 warm-up cycles. That's a handy post. Thanks.
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Unread 02-13-2015, 11:52 AM   #6
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
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if find it very out of the ordinary to drive some of the cycles. kind of hard to do in traffic. i dont know if they still do it, but the factories used to have tracks set up outside to drive through all of this.
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