Engine starts sputters then shuts off - Briggs & Stratton Lawn-Boy Insight Series 21-Inch 190cc 650 Series Gas Powered Engine Variable Speed Self-Propelled Lawn Mower

Could be a problem with the engine temperature sensor, that send signal to shut down at PCM. Check coolant fluid level and fan relays open in the right temperature.

Hope this helps.

Good Day Robert ,
Please Give Me A Little more Info.
What Size Is The Outboard?
Carburettor Or EFI?
Thanks
gordy

IAT sensor is the Intake Air Sensor.. It could be temperature or amount and as the engine is stalling, I would suspect that the sensor is not measuring the amount of airflow correctly..Substitute a known good unit as these sensors are not a repairable item..

Not enough information for us to make a suggestion. You say the engine shut down? Is the engine seized up or will it start back up? Did the engine make a noise before it shut down? Did it sputter or cough before it shut down? We need more information before we can make any suggestions.

Doubt it. Sounds like a crank sensor.

Start with the simple and replace the fuel filter. The fuel filter may have reached the end of it's life time and is dirty causing the issues you have. The worst is the fuel pump it self has gone bad and needs to be replaced, the fuel pump should be producing 62 to 65 PSI when the engine is started and should drop no more then 5 PSI when the engine is running. You can check the fuel pressure at the shredder valve with a fuel pressure gauge. Good luck and keep me posted, be glad to help get your Yukon running 100% again.

charging device or voltage regulator is faulty.

Hi i know exactly what is wrong I had the same problem with my A6 change the air mass flow meter or sensor min was wher the air filter is sat writ on the top n£45 from eby good lich.

Mo

start with tune up... air n fuel filters, spark plugs and wires good place to start... if not fuel pumps like to go out in gm products

You have 2 Problems, First problem batteries dying you have to make sure connections secure and alternator is charging your batteries (go to an Autozone or Discount advanced they will tell you). The Sputtering is either a bad SPARK PLUG or a damaged Cable going to the spark plug..Change them every 2 years.