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Q: Major coolant leak

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I turned on the AC and smelled coolant. The truck then stalled. I opened the hood and saw coolant coming down from the hose on the firewall. There was also coolant all over the engine.

A: It sounds like your truck overheated and ca...

It sounds like your truck overheated and caused it to turn off. One thing that could cause it to overheat would be a bad thermostat. I would recommend having the thermostat replaced and make sure there is coolant in the radiator.

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