04 NBX v8 w/Transmission problems newbe needs help | Ford Explorer Forums

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04 NBX v8 w/Transmission problems newbe needs help

idsledhead

Member
Joined
May 20, 2012
Messages
13
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City, State
idaho
Year, Model & Trim Level
2004
Hi to all
I’m new to this web site but it looks like there is a wealth of knowledge from very well informed people. I’m sure this site can solve my problem. Well I should introduce my explorer it’s a 2004 NBX 4.6 litter with 71k on the suv. It has a 5R55s transmission with 3.73 gears, control track and advance track 4x4. This my first Ford I have own in a long time and our relationship hasn't started out well. I bought the suv a week ago from a guy that said there was no problems and it was good car. He lied, the transmission stared act up one day after I got home. When I call him to ask him about his statement you bought it’s yours and hung-up. I don’t have money to take it to a shop so I must do it myself.
What I know/done so far (no codes)
1. When I came to a stop the truck would die just like you didn’t push the clutch in on a standard.
I think the torque converter didn’t unlock
It wasn’t consistent sometimes it work fine like when I test drove it
The torque will achieve lockup and shift normally.
2. I was told to do a valve solenoid replacement and tranflush with filter (5/18)
I did that it helped a little the torque converter wouldn’t stall the SUV but would make it jerky while stopping but not consistent sometimes it work fine.)
The pan was fairly clean no chunks just a fine film of black and some black stuff on the magnet(looked like graphite).
3. New problem just starting today( 5/20)
A sound similar to two metal plates rubbing together while in reverse or drive (very audible).
When your speed reaches >2 miles per hour the noise goes away and returns as the speed decrees. The sound fades away rather than just stops. No noise in neutral or park. The noise will intensifies if I apply the brake and throttle at the same time not letting the SUV move. When the noise fades it sound like something is synchronizing to the same speed.
The torque converter seems to lockup normal at higher speeds.
I think it is a converter I just need to speed money on parts wisely. I hope someone can help. I sure this is old problem and links form the site on old post would be very helpful. Thanks
 



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It could be the torque convertor. I am also wondering if it the friction and steel plates inside the transmission are messed up, but I would think you would find metal then. The other thing I am wondering is if the input shaft in the trans is bent. Also I thinking it could be the trans range sensor, because if the dash shows in gear but the trans range says your not you could be driving while the trans is not fully engaged.
 






Thanks for the response. I order a new converter today and will give that a try. If the steel plates where slipping the trans would also slip right? Mine don't, onces its moving it don't slip or grind. Sure hope it works, I will keep the forum updated in case someone else has the same problems. Thanks again.
 












Since you describe the mechanical noise, the torque converter is a prime suspect. It could be the valve body, but not as likely. As long as you are pulling the transmission for the torque converter, get a TransGo kit and rebuild the pump with their parts. It would be a good idea to go through the valve body as well.
 






Sounds like I need to get on ebay and buy a good manual. These are good ideas. Is this something with normal mechanical skill/tools should be tackle?
Thanks for the input I do appreciate it. As i solvethis I will keep the forum advised.
 






Couple additional sources

I've been doing some research about my new 05 Explorer w/ 5R55S and ~ 70K miles on it. One of the things I'm planning is a tranny fluid change (NOT a flush), with a pan removal so I can do some minor inspection at the same time.

This forum has a TON of great advise from great sources. Here's a couple links that might also help you.

http://www.ratiotek.com/5r55w-complete.pdf
http://www.youtube.com/watch?v=ilYmZpgfXa8

And of course, use the "search this forum" and type "5R55S"

Hope this helps!
 












Update 6/3/12
replaced the t/c and Solenoid Pack-the problems are fixed.
thanks for the help
 






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