1997 e4od 4x4
I took my truck to the shop after it started shifting very oddly.
The transmission shop looked at it and this is what I’ve gotten over the phone. They hooked up their scanner that lets them look into the computer commands and that the trans is doing what it’s told to do, and that they tried replacing the shift solenoid just in case but nothing changed.
they said it’s starting in third in drive, and starting in 2nd in 1 and 2. They said the computer is telling the trans there is 100% throttle even when that isn’t true. They said they cleaned all the electrical connections to the trans and it isn’t a transmission problem so there is nothing they can do.
the shop suggested the computer is possibly the wrong year for the truck, or failing. What does this mean?
i have another truck that shifts fine, but doesn’t like overdrive. 1996 e4od 4x4 that I could rob parts off of to test
Any help is appreciated

 

What you describe is what happens if the shift solenoids are not getting power. That's where you should start looking. See if the red wires on the transmission connector (passenger side of the trans) have +12 volts with the key on.

 

So take off the transmission connector and with the key on shove one of the probes of a multimeter into the red wire pin, correct? I’m a little slow with all of this so just making sure. Thank you for your response!

 

NO!!!!!!!!!!!!!!!!!!!!!!!!!

Never shove a probe in the end of the connector that makes the connection. That spreads the female pin and makes for poor or no contact when you put the connector back on. Always probe the back of the connector, not the connection end.

 

This area?

 

Yes, that's right.

 

I NEED HELP WITH A QUESTION.
I have a 97 f-250. i just bought the truck and i have a question. I was driving it home one day and had left it on OD in stop and go traffic ( i didnt know any better). By the end of the ride the truck was mad at me and the OD started flashing and she started to shift hard. Since then i normally have OD off and she has been happy. The only other thing is when i give it gas sometimes my RPMs dont shoot up but i slowly get up to speed. Sometimes at around 40 mph ill hear either shuttering or grinding. Ill let off for a sec and then itll go away but doesnt need to shift to make it go away. Is that a bad torque converter possibly or is it the transmission?

Thanks for any imput

 

My imput:

You should start your own thread. Your question has no relation at all to what is being discussed here.

Why shouldn't you have it in OD in stop and go traffic? I don't understand why not.

When the OD light flashed one or more codes were stored to tell what's wrong. You need those codes to be able to fix this. WIthout the codes you'll spend a fortune and probably not fix it. The places that read codes free CANNOT read these codes. You could get Forscan for free at www.forscan.org and buy an ELM327 for about $30. This will read the codes. Or you could take it to a good independent shop or a Ford dealer to get the codes read.

 

This may be long winded and I am on my phone so forgive any errors.


the shop that had my truck knew that I just had surgery so they wanted to try to figure out the problem for me. While trying to diagnose the limp mode, they had taken it on three test drives. The first it was how I said in the op, the second it seemed better. The third the transmission was shifting 1-4 fine but wouldn’t lock the tc. While diagnosing they cleaned and greased the connections and made sure everything had power where it should.

i got the trans from someone who had wrecked the truck it was in and then it sat for a year. The shop said it seemed like some stuff was bound up and just needed some movement/heat to free itself.

I picked up the truck today, I also picked up auto enginuity. I tried pulling up pids that apply to the trans but it didn’t seem like any were applicable. 1-4 seems great, crisp shifts. When it’s time for the tc to lock up it does not. if I stay on the gas to push it the truck bogs down. On AE, if I watch the accelerator pedal position it drops down while I am still wot.


im unsure if any of that is useful information, I’m recovered from surgery enough to go and check whatever you want. Also, while I was driving back from testing it seemed as though the alternator was going out. The dash voltage was dropping and the AE was showing ~11 volts. I think I read on one of your posts if the alternator is bad it can mess with the transmission functions.

 

This is a video to try to show what the trans is doing. Hindsight, I should have had vss running as well.

 

I have no idea of what the video is trying to show.

 

That is the response I was expecting, what pids should I pull up? What should I be testing? I was trying to show it going through the gears, and then not going into overdrive.

 

I only saw one panel change.

I need something that shows accelerator pedal position, commanded gear, and torque converter slip.

 

In the video the top left is accelerator pedal position, the top middle is torque converter slip-actual, and the middle right is transmission range. Do you want a video where those are the only things? I’m completely new to this software so I’ll do my best to get another video. I’ll look for commanded gear. My idea for putting all the shift solenoid pids in was to show what the pcm was commanding, I suppose I was wrong.

 

The top middle is not torque converter slip. It never leaves 0.0. Slip doesn't do that, unless the converter is always locked. If it is always locked the engine will stall when you stop.

I couldn't tell that those were SS PIDS. I can't read the labels.