Experience with code 12 and random shutdowns ? 97
#1
Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Hi all , have a 97 4.0 grand , I know this is xj section but same engines and looking for answers quick. Started having random shut downs.no work done recently, jeep runs fine ATM, will just cut out random. So far restarted fine and drove like normal. Only showing code 12 when read from dash .
Last time it shut down actually turned over but did not start first try but did on second . And again ran fine after.
Any ideas ? Hitting brick wall here, I've had it running and wiggled everything under the hood but it keeps running 🤦🏼♂️
Last time it shut down actually turned over but did not start first try but did on second . And again ran fine after.
Any ideas ? Hitting brick wall here, I've had it running and wiggled everything under the hood but it keeps running 🤦🏼♂️
#2
Member
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Code 12= Battery has been disconnected in last 50 starts.
Usually means battery has been disconnected, loose or bad terminals, or ground connections. I don't suspect that is the cause of the problem your describing, It sounds like a CPS.
Usually means battery has been disconnected, loose or bad terminals, or ground connections. I don't suspect that is the cause of the problem your describing, It sounds like a CPS.
#4
Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Hi, that's what I'm a bit annoyed about, battery has not been disconnected, slowly going through grounds when I get time and clean them up. . . I have a spare cam sensor here I will try too . I have a spare crank sensor too but my experience is the crank sensor will make it run bad but not cut out .
The following users liked this post:
zs&tas (08-16-2024)
#6
CF Veteran
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
The lack of a 55 at the end of the codes is concerning. It should blink 55 every time. This could be the result of a ECU going bad. See if you can get an OBD reader and check what you can.
#7
Newbie
Join Date: Aug 2024
Location: Kentucky
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0L
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Whenever you get your vehicle into a no start try checking it for spark and if you have a fuel pressure tester handy it wouldn't hurt to try that out as well. If you are missing either one of those you got a little more testing you got to do.
Trending Topics
#8
Member
Thread Starter
#9
Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Hi, 100% what I'm thinking, intermittent problems are the worst . If it just sat not working I could work through it 🤣
#10
Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Cut out three times one trip today - not warm and early morning, then nothing - ran fine coming home .
Ordered coil cap and rotor , cheap and tbh it can only help . I've swapped out relays , checked connectors , wobbled everything . Nothing is appearing to be bad
Ordered coil cap and rotor , cheap and tbh it can only help . I've swapped out relays , checked connectors , wobbled everything . Nothing is appearing to be bad
#13
Member
Thread Starter
#14
Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
You could still be right but after many more starts and small trips over two days I've had no problems, I did lots of reading and spent time around the PDC, unplugging and plugging everything effectively cleaning contacts, also right near the PDC is a connector in the loom which looked dirty as hell, opened it up, looked ok inside but you never know. Anyways since that time it hasn't stalled. I'll give it a bit longer before I decide that I've fixed it !
Thread
Thread Starter
Forum
Replies
Last Post
KEVO2194
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
05-19-2018 02:07 PM
burns_jimbo
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
09-24-2014 06:07 PM
JPblkSS
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
10-14-2013 10:17 PM
cbrcolt45
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
2
08-03-2010 09:55 PM
nathan_starke
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
10-20-2009 04:38 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)