Q: Won't run right since my son replaced the thermostat

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Starts fine then dies and runs rough afterwards

My car has 190000 miles.
My car has an automatic transmission.

If the engine was running without a problem before work was done then the repairs most likely have caused the problem. You should have the engine scanned and the entire engine checked for loose or disconnected connectors on the mass air sensor or coolant sensor. If you need help then contact a mechanic like one from YourMechanic.

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