East West European Imports - BMW Mercedes Porsche Ferrari

Figure 13 shows a broken DISA
valve. The plastic pivot that the
flap rotates on fatigues over time,
and snaps. The result is a rattling
sound from the intake manifold,
and reduction in engine power.
Also, the diaphram can leak
vacuum, causing additional issues
to the fuel trim (and check engine
light).

Figure 14a shows a leaking BMW
Valvetronic sensor. The oil in the
electrical connector causes
electrical shorts, resulting in
engine engine stalling, rough
running, and service engine soon
warning light.

Figure 14b displays the
Valvetronic sensor removed from
the engine.

Figure 14c shows the location of
Vlavetronic sensor in the engine.
See the red-circled part.

Figure 15 displays a faulty air
mass meter insert. The air mass
meter allows the engine
management module to deliver the
correct air/fuel mixture to the
engine. When a air mass meter
goes faulty, a check engine
warning (or service engine soon)
will display, poor engine
performance, and poor fuel
economy.

Figure 16 shows some damaged
wiring (circled in red) in a trunk.
The wiring gets damaged in two
common ways: 1) the pivoting
action of the trunk lid can fatigue
the wiring, causing one or more
wires to break. 2) body shops
typically rush through the tedious
task of proper routing of wiring
(insurance companies generally
do not like to pay for additional
time to address details like proper
routing of wires). Incorrect routing
of the wiring can lead to pinched
of chafed wires. The wiring in the
photo was damaged from being
pinched by the trunk spring. This
vehicle had work done at a body
from a rear end collision. The
body shop technician routed the
wiring too close to the trunk
spring. At some point the wiring
managed to get caught up in the
spring, severing some of the
wires.