I am so tired of all these so called mechanics, Now a days going buy what they were thought in tech school,And buy the books, None of them follow what there brain is telling l them anymore, That the problem might be with the vehicle, Of what i have learn, In over 55 years of working on the older vehicles, Don,t always go buy what you were told buy the instucters in the tech school or buy the books, Or what the scanners show, Or the dianostic equipment. I have seen so many times where the techs have done that, And replaced parts, And the customer still is having a problem with the vehicle. Being that all fuel injected vehicles, Use a ECM To monitor what is going on with the vehicle, They are not fool proof, The sensors on the vehicle, Work on a electric signal, And anything having to do with electricity can mess up, If the votage controlling it changes for some reason, And drops down drassictly, This can mess with the sensors, And the ECM in the vehicle, These sensors relye on a proper signal going to them, They are no better, Then having idiot lights, To monitor what is going on with the vehicle, Even if you have guages in your vehicle, They work on a electronic signal going to them, Meaning voltage, Why do you think in race cars, They use mechanical guages in the, Or any gear head has mechanical guages installed in there vehicle, Mechanical guages are well knowin to be very accurate, Not like a electric guage, Or having idiot lights to monitor the vehicle.