If the chain snapped when the engine was running, it would have died instantly. If the engine kept running, then you didn't snap the timing chain. It may have skipped time, or something similar.

If the chain really snapped in half with the engine running, then you really need to check the entire top-end for bent or damaged valves and pushrods. If a valve contacted a piston, then you will have to do some more work to get everything sorted out.

 

Jeez, now you guys are scaring the poor guy for no reason. This isn't an "interference" engine (as in how some OHC timing belt engines are), so the pistons aren't going to whack the valves if the chain breaks.

 

Sounds like probably (maybe?) have bigger issues than a coolant sensor, you could just unplug it to make the light go out for now. Then get around to replacing the sensor eventually...

Edit: just tryin' to stay on topic... lol

 

pull the sensor, 5min fix (on the coolant level light, not for anything else). If your on the forums im sure you check the fluid just as often as anyone else on here. Obviously watch the temp when your driving tho.