Q: I am shopping for a used car. What do you think about bringing along a computer scan tool to test the car before buying it? Do you think the dealer or private seller would mind? A: I think scanning ...

We earn commissions from purchases you make using links in our articles. Learn more. If your car or truck’s check engine light is on, there’s a stumble when accelerating, or if the transmission just ...

John Paul, AAA Northeast's Car Doctor, hears from a reader deciding between a vehicle code reader and a scan tool. The post ...