D8t transmission filter screen

[Nige]

I'll try that now

Any time that you replace or interchange those solenoid valves it is a requirement according to the Service Manual that the Powertrain ECM needs a complete clutch fill re-calibration.

 

[Franklin7]

This is what I got. Clutch #4 failed calibration

 

[Nige]

Remind me of the calibration again. Does the process calibrate each clutch in sequence automatically or do you have to manually do it one at a time.?

#4 clutch is for 2nd speed.
Did #5 clutch calibrate OK or did the process not get that far.?

 

[Franklin7]

It goes in sequence. It did not get to clutch #5

 

[Franklin7]

I'm not sure why its saying #4. 2nd gear seems to have no issues.

 

[Nige]

I can't see anything in the Service Manual. Does ET have any sort of diagnostic procedure for the "10C0" Error Code.?

If there is no procedure I would suggest to swap the solenoids for #4 & #5 clutches and attempt the calibration again. I cannot see anything really quick that identifies which solenoid is which. The best I can suggest is to identify each individual solenoid by the colours/numbers in the machine wire harness at the transmission control valve.

 

[ahart]

 

[ahart]

Not the best picture but they’re identifiable.

 

[Nige]

What do you reckon to the idea of swapping solenoids #4 & #5 and attempt to run the calibration again.?

 

[ahart]

That’s what I would do, yes.

 

[Franklin7]

I'll have to try that in the morning. Should I swap them or try replacing with new. Thanks

 

[ahart]

Swap them and see if problem follows or stays. No need to throw money if the problem is in the clutch and not the modulation valve.

 

[Nige]

Agreed. If the problem follows the solenoid then #4 clutch will calibrate, #5 will fail, and the fix is a simple solenoid replacement. If it doesn’t then it looks as though the transmission is coming out.

 

[Mobiltech]

I would suggest if it comes to a rebuild you should replace all of the modulation valves anyway because they are a common failure point.

 

[Nige]

I would suggest if it comes to a rebuild you should replace all of the modulation valves anyway because they are a common failure point.

100% agree. The modulation valves should be on the list of "must use parts" for a transmission in just the same way as clutch friction discs, plates, bearings, etc.

 

[Franklin7]

I swapped #4 and 5 no difference. Failed to calibrate clutch #4. When it's trying to calibrate #4 I can feel it like it's trying to engage. Like a jolt every few seconds. #1-3 doesn't do that.

 

[Nige]

I don’t know what @ahart & @Mobiltech think but it sounds suspiciously like transmission out time to me.

 

[Nige]

When it's trying to calibrate #4 I can feel it like it's trying to engage.

That’s the ECM commanding the modulation valve to increase pressure to the #4 clutch until it sees the necessary speed change to confirm that the clutch has engaged. If it doesn’t see that speed change by the time the connanded pressure has reached X psi the calibration falls over. That’s what yours is doing.

 

[Franklin7]

I just ran the calibration test again. It did clutch #1-4 and now clutch #5 failed

 

[Nige]

And the #4 solenoid is still in position #5.?