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Well this project has gone off the boil
Simply put:
The Transmission control module is hooked into the CAM-Bus
Everything on the cam-bus does a roll call at start up..
To reset the TCM I need to cycle the power (which means it's expecting everything else to also power cycle)
If I make a PIC controller to replace the TCM it needs to read and undertand CAM-Bus signals, particularly the throttle setting and road speed... that isn't something for which there is code already written that I can download.
However I look at this it's just more trouble than it's worth. It might save me £1000 in fuel over three years but it's going to cost me so much time and effort that I virtually need to generate a complete product to make it happen. The better way is to work a bit of overtime or make a product that will sell, and a W210 torque converter override module, isn't going to sell that well.
Best solution:
By a manual car next time... the new Merc E250CDi is pretty awsome, same power as mine but consumes 36% less fuel, just have to wait for the prices to drop a bit, no point in spending £25k to save £1k/annum
Derek
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