Thread: Td5 Auto lock up and resetting adaptive values

It does sound like I'm just delaying the inevitable, doesn't it.....but this engine temp reading is the last thing before I have the TC inspected/replaced with the original. When we say the TC though, we are referring to the lockup clutch specifically, right? I mean, what else can go wrong with a TC. They're near solid steel.

Because I love my heart rate racing, I put on the original ecu code. This made no difference to the lockup (went back to the beach). I have to say, how anyone can drive a Td5 in standard form is beyond me......just terrible......slow to respond, no power to get up hills. A dull drive. But back to it....

I have to find out where the gearbox ecu reads it's temps from and how it does it.

Cheers for all your help so far.......for you it does sound like a case of 'yeah, been there, done that'.....:-)

When we say the TC though, we are referring to the lockup clutch specifically, right? I mean, what else can go wrong with a TC. They're near solid steel.

Yes the lockup is inside/part of the TC

Ok just put back the performance ecu map........ahhh that's better.

I tell ya, if I find I don't have to replace the TC I may treat myself to a VNT with updated map.....

Ok just emailed Ashcroft's. But I think I will have to replace my gearbox ecu....

Originally Posted by catch-22

I have to find out where the gearbox ecu reads it's temps from and how it does it.

It's no mystery. The only place the gearbox ECU gets it's temperature information from is the engine ECU. The information is sent via canbus.

If the engine doesn't send a sane engine temp the gearbox ecu should set a P1884 T_MOT fault code, which will in turn cause the engine ECU to set a fault that the gearbox is reporting a fault code.

If you have a dodgy coolant temp sensor or related wiring it on the engine it will cause problems with the gearbox.

cheers
Paul

Thanks Paul. Your knowledge in this area is amazing.

So engine temps read by the engine ecu 'seem' ok and normal. And the are no faults being logged on either ecu (now).

So can temp being sent to the gearbox ecu still be wrong? Can it still be the temp sensor?

Cheers
Caine

Caine,

When solenoid 3 goes active, try lifting off throttle quickly and then back on..

When the TC lock up went on mine I had the identical symptoms, which were amplified by fitment of the VNT (more torque through the unit).

I went with the Ashcroft updated TC (lower stall and larger) and never regretted it!

Hi Mike,

Thanks for chiming in. I'll go for a drive now and test what you suggest.

I do have the Heavy Duty TC from Ashcroft - the bigger one that, yeah, lowers stall. They may be different now. I ordered mine back in August 2011. I noticed that the price has dropped quite a bit

This should have lasted a lot longer than what it has (if indeed it does turn out to be the TC). I mean the standard one was doing all the towing and it didn't have an issue at all.

Cheers