Timing 4.0 - JeepForum.com
Search  
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 JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Timing 4.0

Ruffstuff Axle Simple Swap Kit!Even Better Heim Pricing! From RuffstuffToxic Brakes - 3000 PSI Braided Stainless Steel Brake Line

Reply
Unread 12-10-2011, 10:11 AM   #1
Flat_Black_ZJ
Registered User
1998 ZJ 
 
Join Date: Aug 2010
Location: West Virginia, WestVirginia
Posts: 161
Timing 4.0

Ok so I recently had my 1998 jeep grand cherokee 4.0 rebuilt. Now it is running but once you drive it for a lil while the check engine light comes on and gives an upstream o2 sensor code. But when hooked to a scan tool both o2 sensors are going crazy. We checked the timing at the distibutor and it shows to be about a tooth out but if you put it were it is suspoded to be it wont run. The scan tool says it is firing at 14-17 degrees before top dead center at idle. Can anyone tell me what it is suspoded to fire at.

Flat_Black_ZJ is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





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