Thread: Block Heater

I live in Ontario, and the weatehr gets pretty cold here. On the factory block haeter it says "will not operate above -18c (0f)"

I have plugged the block heater in at a colder temp then that, but it isn't warming the engine at all. 3+ hours plugged in and no change.

I've had other vehicles with block heaters, and I know they make "misc sounds" and melt the snow on hoods.

Is there a thermostate controlling the block heater, or mine might just have a fubar cord?

mine was just cord into the block heater no thermostat or any thing being in ca i just took it out for my rebuild

All depends on if it is factory or aftermarket.

I believe factory ones were just a cord and element that went into the freeze plug. No thermostat or anything like that.

i the cord was checked and it seems fine, and resistance was checked on the terminators and its infinite ohms, looks like the factor block heater is fubar