Ford COP systems are like that. If there are no codes, slight misfire/surge issues can be difficult to trace. I’m sure the technician was as frustrated as you at not being able to pinpoint the problem. These are OE engineering issues usually, not a lack of effort or competence. I would suggest a throttle body cleaning and a careful mass air flow sensor cleaning. Next step might be a "smoke machine" test to look for intake manifold vacuum
leaks.
Jim O’Neill
Chino Autotech Inc.
Dorman offers these three tips to help to determine if it’s a valid warranty claim.
It’s been estimated that fraudulent warranty claims cost auto parts stores $600 million every year.
Those costs stem from a number of expenses that are set in motion by a return, including manually processing credits; reverse logistics and transportation; repackaging products; and additional quality-control testing to rule out major defects in materials.
These simple guidelines will help you ensure that your customers have everything they need.
This often-overlooked undercar part
ensures a smooth transfer of rotational motion.
Automotive solenoids translate electrical impulses into mechanical movement.
Even EV batteries aren’t immune to the effects of extreme winter weather.
Customer service should be your number one priority, and it all starts with the greeting.
Screwdrivers come in many shapes and sizes, and they are not created equal.
Being able to answer this question can help prevent them from failing prematurely.
With the proliferation of computer electronics, there were just too many sensors and wires.
