torque converter lockup at 70 - 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 > torque converter lockup at 70

FS: Jeep Fog Light LED Bulbs! Several Brightness Options! Stainless Steel Door Hinge PinsPoly Door Hinge Bushings

Reply
Unread 08-16-2009, 03:45 PM   #1
bigstinger
Registered User
1993 YJ Wrangler 
 
Join Date: Apr 2006
Location: Richmond, VA
Posts: 366
torque converter lockup at 70

I just took a trip into the mountains of Bristol VA. During that trip, my 2004 WJ 4.7l did the following
would jump rpms from about 2k to 2.3k when I would hit a bump doing 70
would not increase rpms when I hit the brake while cruising steady.
Would keep steady rpm at 80.

I stopped off at a shop and asked for a transmission flush. the gentlemen said that he didn't do that anymore, trannies would go bad shortly afterwards. He indicated that he thought it was a bad solenoid.

That follows, because if you hit the brakes, the torque convertor should unlock, right?

I'm a fair wrench, and am pretty sure I can drop the pan off and swap the solenoid. As far as I know, the tranny fluid has never been changed, nor the filters.

I reading this http://hotrodlane.cc/New%20HEMI%20Te...mi%20trans.pdf for info as well.

Anybody got any advice? I'm thinking I should just drop the pan, replace the filters, replace the solenoid and see what gives.

Thougts/advice/writeups?

Many thanks!

__________________
4.0L Ford 8.8 4.56 lsd D30 SOA, 4.56 BFG 35 X 12.50 AT's
Ebay Bushwacker knock-off TJ flares - tuffy security console.
Stainless steel braided brake lines skyjacker pitman arm skyjacker hydros
Buy my unit bearings!
http://www.jeepforum.com/forum/showthread.php?t=533752
bigstinger is offline   Reply With Quote
Unread 08-17-2009, 02:31 AM   #2
ratmonkey
R.I.P.
 
ratmonkey's Avatar
1997 ZJ 
 
Join Date: Dec 2006
Location: , Pennsylvania
Posts: 19,796
sounds like the brake switch.
__________________
'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

ratmonkey 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.