Hello again. My scan tool shows the desired rpm of the torque converter and the actual rpm are very different. I will attach pictures of this. Need to know how serious it is amd if theres something I can do to check/fix it myself. Thanks guys

***ALSO IT WAS AT IDLE WHEN IT DIPPED DOWN SO WHAT WOULD CAUSE THAT?****

 

Really the only thing I can think of is the torque converter is worn out, maybe from towing, hard driving, or just the age of it, it is possible though If you did a trans fluid flush the torque converter could have been affected by that, all transmissions respond differently to a fluid flush especially if they weren’t rebuilt (at least in my personal experience)

 

okay. yeah there is 318,000 miles on my baby..... well **** okay looks like I will be learning how to replace a torque converter wish me luck! And I will gladly take any tips or advice btw haha

2003 f150 king ranch 4.6l v8 2wd 318,000 miles and counting

 

Be 100% that you are familiar with the proper way to seat the converter. I suggest you watch videos like this several times.

You will ruin the pump if it's not done right, and as a result, you'll probably be rebuilding the whole trans.

 

okay thanks so much for the tip. If it looks too difficult maybe i will just pay shop. But you do agree based on scan data its likely toast? Is there some way to definitively confirm? Or is it confirmed basically already? Thanks again

 

Hold on here folks.
A converter at Idle speed slips in the fluid at Neutral or in Drive gear at Idle speeds.
Only in gear when the front pump pressure is allowed to open a valve in the valve body do you get forward drive to the running gear as throttle is applied.
Only when the engine RPM rises does the converter turbine effect begin to take place and drive the transmission..
What is the trouble? >>>first!
Or are you just jumping on a Scanner display without knowing what going on?.

 

yessir. so for 2 months this forum has helped me get my truck (2003 f150 supercrew 4.6l v8 2wd) from not even starting to now almost(hopefully) passing smog to finally get my ca registration and tags again. the issue is i have codes
p0453,p0443,p0315, and b1869.
but every few scans show codes for the vss circuit input high and also a seatbelt circuit a i believe it was im sorry i do not recall right now the exact codes. anyhow, the truck runs a bit sluggishly albeit much better than two weeks ago after i have changed my intake gaskets to rid the p0171 and p0172 lean codes or whatever exactly they were the common ones you know. now, i boughyt a launch 129e scantool for $280 bucks to help me get to the bottom of these last issues because I am truly struggling. I am super handy but not in any way or form an expert mechanic nor knowledgeable in ford systems other than what i pretty much learn from you guys and a bit on youtube. let me just get to the point forgive me, with the truck being sluggish i figured hook up my new scanner and while driving record the datastream and i noticed desired rpm while driving was like 1200 or something but the actual rpm for the torque converter was around 230. when I got home while idling in my driveway is when i took the pics that are posted above as I didnt know about the way they actually work as you detail above. Thanks for giving me time from your day as I know how valuable and limited time is for anyone so thank you very much i mean that! but man, im dying here and my registration was due in february i am really struggling here and with 5 kids need my vehicle so badly for transportation and work so I swear i am working hard to get this all together and working right but you are right sir I have to admit im kinda firing in the dark as they say as I do not know what I am doing but am willing to listen and learn whatever anyone is willing to teach and share. hope that helps detail where im at

 

I do have the timing data in that screen shot. I don't know if it will read both phaser timing tho?... I have the entire timing kit in my garage ready to install. Just waiting for a weekend that I have off haha, like that'll happen. I know they need done just don't wanna do them and still not feel accomplished because this issue is still present. But it does become a possibility with the hot oil. That's a good point. Maybe the phaser gets stuck? But always running lean on bank 2? And worse as it gets hotter? I do have a evap code, not sure if the timing can throw that code as well?

 

Joel, I don't know if you are posting on the wrong board or?? but the 97-03 motors don't have camshaft Phasers.
3 valve and later Dual Overheat Cam motors have the Phasers.
Don't know what motor you're working on.
This is the 97-03 board.