cylinders 1&2 misfire
04-10-2010, 09:16 PM
#1
Member
Thread Starter
Join Date: Jan 2010
Location: Enterprise, AL
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0I6
cylinders 1&2 misfire
im getting a code for cylinders 1 & 2 misfiring. I have perfect oil pressure and a steady 200 degrees on the temp. The current thought is the coil pack, however they are not known for going bad. I havent taken anything apart yet just looking for some ideas if anyone else has had this issue.
04-10-2010, 10:26 PM
#3
Senior Member
Join Date: Jan 2010
Location: MI
Posts: 712
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Pull your plugs and see what they look like. Start the Jeep in the dark and look for spark. Make sure your injectors are working properly, and also check the crank position sensor. Keep us updated!
04-11-2010, 02:32 PM
#5
CF Veteran
I don't think your motor came with those plugs.. Get a set of champion's and turn of the mil and see if it comes back after 60 miles or so. Only reason I go with Champs is because it's recomended from the factory.
04-11-2010, 06:07 PM
#7
Senior Member
Join Date: Jan 2010
Location: MI
Posts: 712
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Other than the fouled plug, they look good. I agree with the above posters - get Champion plugs and try those out. Good luck and keep us updated!
Trending Topics
04-11-2010, 06:35 PM
#8
Member
Thread Starter
Join Date: Jan 2010
Location: Enterprise, AL
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0I6
i cleaned up the plugs and reinstalled them and no light with a better sounding engine. i will still replace them with champions this week.
04-11-2010, 06:39 PM
#9
Newbie
Join Date: Apr 2010
Location: Las Vegas, NV
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Grand Cherokee
Engine: I6
Cap & rotor could be suspect as well.. I just has a #1 misfire intermittently & found it was arcing inside the cap.. nice lil' carbon trail coming down from the arc terminal.
04-11-2010, 07:05 PM
#10
Senior Member
Join Date: Jan 2010
Location: MI
Posts: 712
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Alright, that's great news! I would replace them too. I'm actually going to relpace mine because Autolites are in there now...bleh...
04-11-2010, 08:32 PM
#11
Junior Member
Join Date: Mar 2010
Location: New Jersey
Posts: 58
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1999
Model: Grand Cherokee
Engine: Inline 6
its the coil pack i had a miss fire on 3 and 6and when i changed out the pack it fixed the problem. sometimes you get a lemon and you will have some problems
04-11-2010, 10:24 PM
#12
Member
Thread Starter
Join Date: Jan 2010
Location: Enterprise, AL
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0I6
04-11-2010, 10:27 PM
#13
Member
Thread Starter
Join Date: Jan 2010
Location: Enterprise, AL
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0I6
put some miles on it today and no light, looks like the #1 cylinder was the plug that wasn't screwed in completely and #2 cylinder was the plug that had carbon buildup.
Thread
Thread Starter
Forum
Replies
Last Post
MightyMouse8
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
10-08-2015 08:57 AM
zumer715
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
10-03-2015 07:07 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)