This should be an easy one. But cars remain a tricky subject for
many of us. Recently the check engine light came on. But it went off.
During one trip home the light came on and off twice.
What are the most important things to look for? Yes, I should know
this. But a refresher course is always good. Can other factors cause
the light to come on? The car has been running well. With hotter
temperatures, we try to keep a closer watch on the coolant level.
Unfortunately, the manual is often not much help. There is a line
about the problem being gone if the light goes on and off while driving.
For the record, I am fairly knowledgable in other areas.