Mnewbill wrote:
Hi I have a 2019 f150 5.0 with the same symptoms. It struggles to crank after hauling the travel trailer. I dont know if the battery is low as it will start fine after it cools off. It may be bad battery but it's fairly new in terms of years and low miles. It should have at least 2 more good years. Any luck finding your issue?
I'm wondering if it could be related to higher engine area temperatures due to hauling?
Have the battery load checked - free, new batteries fail. Buy a $20 digital voltmeter and check the battery voltage including while trying to start. Better buy a clamp on ammeter for DC amps and volts and also check the trailer draw.
