Need HELP cant figure this out -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Need HELP cant figure this out Sale EventFS: Jeep Fog Light LED Bulbs! Several Brightness Options! *STOP UNWANTED LIGHT BAR NOISE* with Pandemic LED Light Ba

Unread 06-04-2003, 09:05 PM   #1
Registered User
Join Date: Jun 2003
Location: Banning, CA
Posts: 8
Need HELP cant figure this out

I have a 97 GC limited 5.2 v8 with 80,580

At any speed the GC would start studdering like it wanted to die. I hit the gas and nothing then kick hard a couple sec later, this only happened like 3 times . I changed the spark plugs & wires last week . It ran great untel lastnight same thing started happening again, but with major loss of power then it would stall .
And The check engine light came on with codes 12 & 21.

Any suggestions??

Last edited by sup2nrmkiii; 06-09-2003 at 07:45 PM..
sup2nrmkiii is offline   Reply With Quote Quick reply to this message
Unread 06-05-2003, 01:23 AM   #2
Registered User
2011 WK 
Join Date: Apr 2002
Location: Orem, Utah
Posts: 402
Sounds like it could be the Oxygen Sensor. Check out the codes here
2000 Jeep Grand Cherokee V8 Stock
93 YJ I6 hard top (really belongs to SPEED)
RE 4.5" Extreme Duty Lift, Advanced Adapters SYE, Tom Woods CV Drive Shaft, EA589 10" rims with 33" x 12.5" MT/Rs
Bullet Proof Front and Rear Bumpers and Tow bar
moabster is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the 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.

Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.