DMC Joe, Ryan, Dave, I'd love to test the thermostat myself, however, due to the setup of the engine (with turbo kit completely obstructing the waterpump) I'm going to leave this one up to the shop. Disassembly of the turbo might not be a problem, but assembly may be (gaskets and all). Besides, the shop is equipped with pressure tester and the right tools (I assume), whereas I only have a wrench set and a hammer (again, useful for disassembly, but not for assembly :). Assuming the thermostat is stuck (water doesn't cycle, pump seems to work, car has been garaged 8 years), is this a repairable item? Or is it non-servicable? If it isn't repairable, is it a common item, or is it specific for the DeLorean water pump? I ask this because I'm in the Netherlands, and if I need to order a new one that may take several days (or longer) to arrive plus I would like to combine that order with other stuff I need for this car. So that might take some planning in advance. Thanks, Sacha