Tranny problem 04cs

[Vwshotta]

While driving home stoped to put gas drove off fine ,stop really hard at the stop light till the abs kicked in when I took off the truck took off fine 2 seconds later it felt like it's in neutral and engage and run neutral again now it not moving and I try manual mode and still nothing I tried resting the battery and it still doesn't move and I can select gears PRND selected I scanned it and got code p0721 output sensor ,I ordered the part and changed it and still I got the code and still nothing have anyone ever have similar problem or have any idea ware greatly appreciated ,THANKS IN ADVANCE

[Loren]

Fault 0721 -- Output shaft inductive speed (Output Speed Sensor Circuit Range/Performance)

 

 

[Vwshotta]

I changed the sensor and it didn't change and I cleared the code and still nothing

[Vwshotta]

@loren do you have part #and procedure in replace

[Loren]

Step 1 is to inspect the connector and speed pickup sensor wiring. Have you done that?

[wvicary]

Carefully inspect the wiring harness for water damage at the gearbox.

[Vwshotta]

Thanks guy for your input ,tomorrow I'm going to check all wiring and connectors and take it from there ,I'll post up my progress

[Vwshotta]

Hey guys I finally got some time to check out the truck I checked all connectors at the tranny and they are all in good condition no corrosion and all well connected I further proceed to go under the pass seat directly at the TCU and verified all connector and all is well also and I have continuity ,I scan the car again and the same code come up p0721 ,what should I do next or what step to take ,Thanks again for the great help ,greatly appreciated

[Vwshotta]

Hi guy I changed the ecu today do anyone have the programming instructions to re-syncing it to the truck or can I just plug it up and clear any code

[Vwshotta]

I recoded the ecu and the same Cade and truck still won't engage in gear should I change the valve body

[wvicary]

I suggest taking the vehicle to a qualified repair shop instead of guessing and throwing parts at it.

[Gonzales]

I recoded the ecu and the same Cade and truck still won't engage in gear should I change the valve body

[Gonzales]

Hi,I have exactly the same issue. Did you solve the problem? I did all the checkings, tested it with durametric, changed fluid and nothing. Dont want to throw out transmission which is maybe good. I'm out of ideas, valve body - maybe but until this happened no issues with trans at all.

[Gonzales]

Hi,I have exactly the same issue. Did you solve the problem? I did all the checkings, tested it with durametric, changed fluid and nothing. Dont want to throw out transmission which is maybe good. I'm out of ideas, valve body - maybe but until this happened no issues with trans at all.

[Vwshotta]

Hi,I have exactly the same issue. Did you solve the problem? I did all the checkings, tested it with durametric, changed fluid and nothing. Dont want to throw out transmission which is maybe good. I'm out of ideas, valve body - maybe but until this happened no issues with trans at all.

it turned out my Tranny pump was broken ,my Tranny guy replaced it and I was all good again

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[Gonzales]

Thanx a lot for reply. Do you know by chance part nr?

[Vwshotta]

No I don't but it's a common pump Toyota and many other trucks use the same Tranny

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[Gonzales]

Thanx I'll try with that.

[Gonzales]

Managed to take out trans - DIY. I will post when have time to open it.


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[Gonzales]

Transmission has main lockup gear burnt. I did full service of tranny and converter. I already bought new 11 liters of atf. Now it is time to put it in. BTW I have possibility to do shaft bearing and I will also decat the pig. My tranny guy said that tranny failed because of heavy trailer (2 horses) I used to pull with ctt. He says this is not a car for such purpose.

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