Been right through valve, nothing sticking or out of place, faces are fine no nicks or burrs around c5 ports. Other clutches still fine.
C5 must be gettting signal to drag like it has, even with crook converter it should still get enough lube ?
Maybe the tcm is crook and just not throwing code... getting a bit bewildered now!
Have spent the day stripping trans again. Mechanically I can find nothing wrong (other than incinerated C5 clutch, "toast" just does not cut it ..) C3 is a little average but it did get some heat.
PPE stage 5 clutch kits were fitted.
C5 piston and seals still all fine, no issues there. No cracks of other damage evident.
So, valve assy appears fine, checked all solenoids, wiring and valve arrangements. No issues apparent. Mating faces on body, plate and trans ports appear fine, no indication of anything that could leak pressure into C5.
Checked pump assy and all control valves, nothing out of place here. All we did previous was add shim to main regulator and update converter flow control valve to the .900 spacer and spring.
From a process of elimination and also learning how this thing works (I am Cat fitter with 37 years exp) I am still leaning to the TCM, something must be telling the control circuit to pressurize the c5 for whatever reason. The valve body, valves and solenoids really do what they are told (correct me if I am wrong) and from the data I have this area appears fine. Plus it was previously shifting fine and no codes for a very long time. Over 2 years ago and shortly after the conversion into my vehicle I did experience a couple of random overheats in the trans, these went away after disconnecting everything. Since then I have had some warm temps but nothing major like now.
Putting the noisy new converter aside, I still have a problem in C5 that I have not resolved, only made it worse by upgrading Trans and upping the line pressure !
Your thoughts and comments on this are much appreciated from "down under" as tech support etc here on these is very scarce !
I do have a spare TCM from a LBZ but its still a A40 so that should work yes ?
C5 must be gettting signal to drag like it has, even with crook converter it should still get enough lube ?
Maybe the tcm is crook and just not throwing code... getting a bit bewildered now!
Have spent the day stripping trans again. Mechanically I can find nothing wrong (other than incinerated C5 clutch, "toast" just does not cut it ..) C3 is a little average but it did get some heat.
PPE stage 5 clutch kits were fitted.
C5 piston and seals still all fine, no issues there. No cracks of other damage evident.
So, valve assy appears fine, checked all solenoids, wiring and valve arrangements. No issues apparent. Mating faces on body, plate and trans ports appear fine, no indication of anything that could leak pressure into C5.
Checked pump assy and all control valves, nothing out of place here. All we did previous was add shim to main regulator and update converter flow control valve to the .900 spacer and spring.
From a process of elimination and also learning how this thing works (I am Cat fitter with 37 years exp) I am still leaning to the TCM, something must be telling the control circuit to pressurize the c5 for whatever reason. The valve body, valves and solenoids really do what they are told (correct me if I am wrong) and from the data I have this area appears fine. Plus it was previously shifting fine and no codes for a very long time. Over 2 years ago and shortly after the conversion into my vehicle I did experience a couple of random overheats in the trans, these went away after disconnecting everything. Since then I have had some warm temps but nothing major like now.
Putting the noisy new converter aside, I still have a problem in C5 that I have not resolved, only made it worse by upgrading Trans and upping the line pressure !
Your thoughts and comments on this are much appreciated from "down under" as tech support etc here on these is very scarce !
I do have a spare TCM from a LBZ but its still a A40 so that should work yes ?
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