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Ralph Mowery[_3_]

In article ,
says...

You don't need 4 years but you need more than the old days.

That?s very arguable indeed given that there is very little
to do on modern cars now, just change the oil, redo the
brake pads etc as required, change the plugs etc. Even
with fault finding, its much easier to do now with the
OBD2 telling you which sensor has failed quite a bit
of the time and no timing etc to do anymore.

Makes no sense to require formal qualifications.

Sometimes I don't know about that. It took a dealer mechanic about 3
weeks just to find the mass air sensor (think that was the part) was
causing my Toyota to run very rough. I had replaced the simple things
like the plugs, wires, fuel filter. The Autozone or some other parts
place had a chart that mentioned that, but as it was about a $ 500 part
I wanted to make sure that was what it needed.
This was on a 1991 so it probably did not have the OBD2 to tell what
sensor was bad.

It took so long that I even emailed the Toyota headquarters about that.