Originally Posted by matt69olds

While it’s been 25 years since I turned wrenches for a living (a Buick and Cadillac dealership) today I’m sure I’m hopelessly out of date. The motto then was “if it was round, black, and said A/C Delco, replace it!” That was referring to the mass airflow sensors used then.

Having said that, what modern sensor/harness is a well known almost immediate suspect in today’s cars? The last few trips to the dealer for any repair to my wife’s cars (2016 Chrysler 200, 2019 jeep Cherokee) have been solved with software updates.