98 Grand Cherokee auto transmission problems - 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 > 98 Grand Cherokee auto transmission problems

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineFS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitFS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 09-26-2013, 03:26 PM   #1
blueribb
Registered User
1998 ZJ 
 
Join Date: May 2008
Location: Pennsylvania
Posts: 17
98 Grand Cherokee auto transmission problems

I have a couple automatic transmission issues that are starting to bother me. The first is gear 2 to 3 shifting for the first mile or so. It winds up to a much higher rpm before shifting. After about a mile, it's normal again. It's been doing this for years but is more noticeable now. The second issue may be the torque converter. This problem happens much less frequently but also seems to be happening more now than less year. When stopping at an intersection or traffic light, the engine rpm drops and almost stalls. It feels like a manual transmission without the clutch depressed. A few times it almost stalled out. My last transmission service (new fluid and filter) was about 6 yrs ago and last week they checked all fluids during an oil change and had to add a quart of trans fluid to reach the fill level. No difference was felt after they did this though.

1998 Jeep Grand Cherokee
4-speed automatic
6 cylinder
135,000 miles
2/4 wheel drive selectable

blueribb is offline   Reply With Quote
Unread 09-26-2013, 03:46 PM   #2
newfieZJ
Jeep Collector
 
newfieZJ's Avatar
1995 ZJ 
 
Join Date: May 2008
Location: , Alberta
Posts: 6,270
TC issue sounds like the lock-up solenoid is malfunctioning .

Shifting issue could be dirty filter , throttle linkage misadjusted , servo or clutch failure , band adjustment , or governor circuit fault
newfieZJ is offline   Reply With Quote
Unread 09-27-2013, 09:12 PM   #3
blueribb
Registered User
1998 ZJ 
 
Join Date: May 2008
Location: Pennsylvania
Posts: 17
Thanks for the info. I'll be sure to have them try the filter change first. The other suggestions are all greek to me but I'll keep them on the list.
blueribb is offline   Reply With Quote
Unread 09-28-2013, 08:14 AM   #4
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Location: Podunk, Alabama
Posts: 5,714
Quote:
Originally Posted by blueribb View Post
gear 2 to 3 shifting for the first mile or so. It winds up to a much higher rpm before shifting. After about a mile, it's normal again. It's been doing this for years but is more noticeable now.
The longer shift when cold is by design. The PCM reads the thermistor in the gov pressure sensor and adjusts the shift pattern so that the tranny warms up faster.

Both symptoms could the indicate the fluid needs changing or any of the things newfie mentioned.

So my advise is to change the fluid and adjust shift cable. Check the materiel in the pan. Some powdered brass and clutch materiel are normal. Aluminum and big chunks are not. If the pan materiel looks normal, adjust the bands.
ZeeJay1997 is offline   Reply With Quote
Unread 09-28-2013, 12:08 PM   #5
dusterdude
Registered User
1996 ZJ 
 
Join Date: Jan 2012
Location: hopewell, va
Posts: 1,797
6 years?
dusterdude is offline   Reply With Quote




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.