I had the check engine light illuminate on my 97 Ford Explorer (105K miles). Took it to repair shop and they told me it was a Cam Sensor. I had them perform the repair. When the gave the truck back, the light was still on. They told me that it had to re-learn the engine and that it would go off in about a week. I took it back a week later and they quizzed me on how the truck was driven. When I told them it was my wife's vehicle and she had only driven it locally around town for about
80 miles with top speed being 50 they told me that it had to be driven over 65 mph for at least 30 minutes as part of the learning process. So I took it to work a couple of times, 26 miles each way most of it at high speed. When I took it back today they first told me the code for the cam sensor was still in the computer, then when the forman looked it up he printed out a diagnostic that said on a single trip I must drive the vehicle at slow speed for 10-15 minutes with 4 idles (do not turn off engine) following one of the idles I must accelerate at faster than 1/2 throttle. Then I must drive at 65 MPH for 15-20 minutes.This sounds like BS to me. Since I do not have a code reader I am at their mercy to pay for and fix what they claim needs fixing. Now that it does not turn off the check engine light I likewise am at their mercy concerning while the check engine light is still on. Any suggestions? Does what they say make sense?
Art McClinton