Truck wasn't starting, so I replaced the starter and battery because they were both dodgey at best. That worked for a few starts, but now it's not starting again. The battery hasn't lost charge so I'm comfortable ruling out the alternator. So I figure it's something holding back the current...
The Prados had an underpowered engine for the vehicle, creating a tendancy to overheat and crack cylinder heads. The L engines in the Prados are not nearly as robust as the B or H series engines.
Some of the australian surfs are doing something similar Toyota 4WD Surf Owners :: View topic - Fuel economy mod for $2
I think an in cab rheostat off the boost pressure sensor would be a nice way to control fuel delivery and hopefully lower temps
Congrats on the new ride!! The high rpm sounds a bit like its not going into overdrive...the lower end of the 2000 range seems like where it should be at 100km/h. And once you get sort out the startup/clunking noise issue, do everything possible to make sure that she doesn't overheat. A full...
I have a rad hose heater in my 90 prado that works well in the alberta cold. There are a few threads about block heater vs rad hose heater at the toy diesel forum
Block Heater install - ToyotaDiesel.com