Truck threw a P0705. I searched around the forums and first I cleaned the connection between the harness and the sensor b/c ppl said sometimes the connection just gets corroded / wet. Then the code came back one week later. So I replaced the TRS with a new one (Motorcraft).

The P0705 code still came back approx week later.

Normally the truck shifts great, but on occasion I feel a hard shift (< 5% of the time)

What do I check now? Seems like there may be a short somewhere... anyone have ideas?

 

It's highly unlikely to be a short since those cause smoke and blown fuses.

More likely, it's a faulty TRS connector or wiring harness fault.

 

ok so how do I debug the TRS connector or find a wiring harness fault?

 

For diagnosis of code P0705 on an 4R70W transmission refer to this chart:

For diagnosis of code P0705 on an 4R100 transmission refer to this chart:


let me know what test you need and I will PM you the alldata page...

 

just sent you a PM,

let me know if you'd like me to e-mail you a copy of the testing procedure.......

 

Thank you projectSHO89 and Longdistancetrucker. I had a Ford buddy that ended up looking at it. My tranny is a E4OD. The problem ended up being a loose connector in the distribution box beside the battery under the hood. The harness that runs from the TRS, then above the tranny, then around and clipped onto the passenger side valve cover eventually plugs into a connector behind the 175 amp mega fuses. One of the connectors has a small bolt in it and it was all the way loose. We tightened it up and no more codes!!

Check that connector!

 

Do you still have this chart? (For 4R100?)

 

I would like a copy as well, since I am currently fighting a transmission issue.

 

Hi all, any update w/ the charts? Throwing same code on 2000 Expedition E40D. noticed a new sensor at Autozone for $65. in your experience how often is this a sensor issue vs. a cable issue?
Thanks!

 

can the trs cause an overdrive malfunction by any chance?

 

All the TRS does is tell the computer what position the gear shift lever is in (in addition to the starter circuit in P or N).

It's likely possible to affect OD operation if the PCM thinks the lever is in some other position, especially if it's intermittent. You might want to clarify what your specific symptoms are.

 

The trs code has been there for a couple weeks but no immediate problems so I've procrastinated repair, I was driving, pulling a quad and trailer. Next thing I know if I get past 38mph the engine revs then gears back down. I pull the valve body to check for broken parts, snap rings, etc... Accumulator retainer ring seems to be missing... Hope this helps.

 

hey guys, a little help? 1997 expy 5.4 ive had an issue where i turn the key and i get no crank, the i cycle the shift lever and then the car will crank and start . recently i went to get gas , went to star and it wouldnt crnk so i did the usual and it didnt crank , changed the starter and it still wont crank and not sure what it could be all connections are good and power too. what else could it be?

 

You should start a new thread for this RENO
Good luck!

 

Hello my name is Mark Halleran I have a 2000 F250 7.3 diesel Powerstroke I am having a problem where I start out in drive have to shift into second manually then back into drive so it shifts into 3rd and 4th it acts like it shifts into neutral if I don't shift into second manually I have an idea it is some kind of sensor could anybody tell me which one thank you