24 - Friday, October 5, 1990 ~ North Shore News

AUTOMOTIVES

Does your car
have an auto
neurosis?

IF YOUR late model car begins
running erratically, acting ‘‘crazy”*
and then, just as suddenly, behav-
ing normally, it may be suffering
from an ‘‘automotive neurotic
disorder.’*

The new generation of vehicles
have their own central nervous
system of sensors and computers
that communicate and_ interact
within the various systems of the
car. The result: a more efficient
vehicle with lower exhaust emis-
sions.

This technology has placed
greater demands on_ technicians
who must diagnose and repair
these vehicles. Accurate ‘‘fault
diagnosis’’ often is required as a
first step in the tune-up pro-
cedure.

Your new car will have dozens
of sensors and microprocessors
receiving information from fuel,
ignition and cooling systems. In-
stantaneously they relay data to
computers which call for changes,
as needed, in the vehicle’s
systems.

A knock (or ‘‘ping’’) sensor,
for example, which literally listens
for the sound of a spark knock,
adjusts ignition timing to elimi-
nate the cause of the knock.
Fuel/air mixtures will be changed
electronically to compensate for
driving in high altitude (where air
is thinner).

When an ignition or fuel system
malfunction causes excessive ex-

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haust emissions, the oxygen sen-
sor, monitoring those gases, takes
corrective measures.

Unfortunately, these ongoing
compensations can camouflage a
problem that continues to progress
until, often without warning, the
malfunction no longer can be cor-
rected. At that point the vehicle
runs poorly, if at all, warns Car
Care Canada of the Automotive
Industries Association of Canada.

Another type of computerized
corrective measure is when poor
engine performance affects
transmission operation. This oc-
curs when the manifold vacuum
sensor tells the automatic
transmission to stay in a lower
gear longer or to downshift sooner
to lighten the load on the ailing
engine.

In such a situation, inaccurate
diagnosis might suggest transmis-
sion repairs to correct an odd
shifting pattern when the real cure
was a tune-up.

Complicated as this may sound,
accurate diagnosis is a routine
procedure for the trained techni-
cian working with state-of-the-art
equipment.

Car owners of the "90s may be
less likely to understand what’s
going on under the hoods of their
vehicles, but recognizing the im-
portance of quality tune-up ser-
vices along with other
maintenance procedures ensures
long, trouble-free vehicle life.

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NORTH VANCOUVER

Dave Helowaty

This fall we have
Wheel Deal

Let the consumers of the North Shore
see what you have to offer them this fall.

The Fall Car Care Guide provides you
with an effective means of reaching
thousands of potential customers with
your product or service.,

Boost your fall sales and get your share
of the $307,397 that is spent every day on
automotive products and services in
North and West Vancouver.

All editorial and pictorial will focus on Fail
and Winter car care, producis and
services.

FALL CAR CARE GUIDE

Deadline: Friday, October 19
Issue Date:Fridzy, October 26

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Garry Crossley
986-6222

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