O2 sensor shorted out PCM? - JeepForum.com
LinkBack Thread Tools
post #1 of 4 Old 01-15-2014, 01:54 PM Thread Starter
Registered User
1998 ZJ 
Join Date: May 2013
Location: Wareham
Posts: 18
O2 sensor shorted out PCM?

I posted earlier on this issue but have broken a little ground. My driveshaft ripped my downstream o2 sensor wires out of the exhaust plug, which resulted in them dragging on the wet ground this morning. My asd relay is good and the o2 harness has suffered a little damage but not much. When I turn it on she crank and cranks with all lights working, dashboard/overhead, but none o my guages work at all, they all sit at 0. Could the wet ground shorted my PCM? Or worse?

ConnorZJ413 is offline  
Sponsored Links
post #2 of 4 Old 01-15-2014, 04:01 PM
Registered User
1995 ZJ 
Join Date: Feb 2012
Location: St Pete
Posts: 2,192
deleted. Bad info

1995 ZJ ltd, 4.0 i6, *cough stock cough* 253,xxx and still pumping strong
1998 Chevy Cheyenne K1500, 5.7L Vortec, mostly stock
*In peace, sons bury their fathers. In war, fathers bury their sons. - Herodotus
Originally Posted by JasonStebbins
We can call it the Whoosh King Catalog System. :D
Gearhead31 is offline  
post #3 of 4 Old 01-15-2014, 10:04 PM
Registered User
2004 WJ 
Join Date: Dec 2009
Location: Dingmans Ferry
Posts: 2,286
#20 fuse in the PDC (under the hood fuse box) is probably blown. Make sure the wires are separated before replacing it.
You can drive it without the downstream o2 but it will register a fault code and affect the gas mileage a little.
The downstream mainly monitors the health of the cat.
If the fuse blows again after the you've done the above, your PCM has probably gone bad.
Attached Images
JS97ZJ is offline  
post #4 of 4 Old 01-16-2014, 11:09 AM Thread Starter
Registered User
1998 ZJ 
Join Date: May 2013
Location: Wareham
Posts: 18
Yes I checked all fuses and relays. Great info though!!!
ConnorZJ413 is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome