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Ralph Mowery[_3_]

In article ,
says...

Makes no sense to require formal qualifications.

I'lL call you on your BS
The OBDII tells you what reading is out of spec. That is ALL it tells
you. It takes an educated professional to know what can cause that
reading to be wrong and how to test and PROVE what the problem is
instead of throwing half a dozeh expensive components at the car, then
cross their fingers and hope they didn't STILL miss the real problem.
That's why the "pinpoint tests" in the factory manual for a given
error code can cover 7 pages in the factory manual - and why the print
version of a typical factory manual con be over 6 inches thick. (and
cost several hundred dollars - and why they are virtually all now in
electronic format indexed 7 ways to sunday) Many won't fit on a CD any
more - and some require double layer DVDs.
Servicing variable valve timing and gasoline direct injection, not to
mention computer controlled transmissions and turbocharged engines and
anti-lock brakes, and active colission avoidance, and traction control
- and canbus controlled door locking systems - and even tail-lights
with computers in them -
Good luck sucker of you don't have a well trained mechanic working on
it. Just the electrical wiring will blow the mind of most "mr fixits"
- whenthe doors lockand unlock by themselves driving down the road -
or the alarm goes off in the middle of the night - or the windows go
up or down by themselves (or don't when you want them to) or the car
won't start or the doors won't unlock (or lock) from the FOB - or the
airbag light comes on - and particularly when the problems are
intermittent - - -. There are no "adjustments" any more - sure. They
require less scheduled maintenance - for sure - but those are the
SIMPLE jobs that the uneducated guy with grease under his fingers and
a $50 tool kit could do.

Engines are getting more complicated all the time. I just bought a John
Deere x590 lawn tractor. The engine on it is fuel injected. All kinds
of electrical wiring to make it work. That is just for about a 25 hp 2
cylinder engine. While it would not take a 2 or 4 year college type
course on that, I would think that some few days of training from the
factory would be needed to work on it.

As to cars I am sure most anyone could do the simple jobs like brakes
and plug and light bulb changes, but once anything gets into the
electrical system it will take a lot of training and skill to solve the
problem. I bought a 1972 Dodge Demon. It had some kind of electrical
system for the engine that was relative new. That car about once every
week would not start. The engine would turn over, but would not fire
off at all. Could do it to the battery would almost run down and
finally it would start except about once a month it had to be towed in
as it would not start. As it was a manual transmisssion funny thing was
that after the battery would almost run down, it could be started by
puahing it off very easy.
I had it back a number of times and finally at about 18,000 miles traded
it in for another car. I had made a mistake of paying cash for that
car. Had I not , I would have let it go back after the 2 nd month I had
it.