torque converter lockup at 70 - JeepForum.com

 
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post #1 of 2 Old 08-16-2009, 03:45 PM Thread Starter
bigstinger
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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!


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post #2 of 2 Old 08-17-2009, 02:31 AM
ratmonkey
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sounds like the brake switch.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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