Right Light
From the right distance and a good angle and the right light the
car doesn't look all that bad.
|
Need More Tape
Get up close though and you can see we need new duct tape on the
mirror. The tape holding the window up is still ok.
|
Lunar Unit
Zoom in on this and you can see that the car has almost covered the
distance from the Earth to the Moon. Where's the dashboard though?
|
Where the Dash Is
There's the dashboard, in the back seat. The car has a chronic
ignition problem. The engine will just suddenly start cutting
out. Oftentimes it makes for a jerky top speed of 40 mph or so on
the freeway. This annoys and confuses other drivers. It just
annoys me. Sometimes the engine will even die. So far it has
always started again. I know it's an electrical problem because
the tachometer will drop to zero while the engine is still turning.
Now I know the problem is not in the wiring behind the dash.
|
The Part Won't Come Out But the Oil Will
That axle has to come out. It's got a bad CV joint. That axle
won't come out. The Haynes manual outlines a horrendous procedure
for taking it out - involving supporting the engine with a jack and
removing engine mounting stuff.
There's also a little puddle of oil forming exactly under the front
center of the engine. I plan to pretend I didn't see that.
|
New Tools
There's three little bolts that are just out of reach. They are
behind a big steel beam that supports the weight of the engine.
I have a plan to avoid the horrendous Haynes procedure, and the
best part of my plan is that I get to buy new tools to try to get
at the three little hidden bolts. My favorite is the cute little
ratchet. (Kind of the upper left of the picture. It's got a short
little handle that flexes to different angles).
|
Void the Warranty
This voided the cute little ratchet's warranty.
|
Hold the Engine Up
Here you can see the horrendous situation I tried to avoid by
buying more tools. That big steel beam being held out of the way
is normally used to hold up the engine. The bottle jack is
supporting the weight of the engine. Underneath, just behind the
voided warranty cute little ratchet, you can see a good sized
hammer. It's scary crawling underneath an engine supported by a
bottle jack, and then beating on that engine with a good sized
hammer.
|
Fire Wrench
Even scarier than crawling underneath an engine and beating on it
with a hammer is crawling underneath and engine and heating it up
with a torch. That's the OIL pan right next to the TORCH. (The
idea is the heat expands the steel collar and makes it so the part
can come out of the collar. The part wouldn't come out from just
beating on it with a hammer).
|
Cute Wrench
This is just to show how the cute little ratchet can come in real
handy. You can see the new axle part being attached to the collar.
The duct tape here was to protect the rubber boot of the new axle
while I slid the new axle in place.
|
Things Are Getting Better
This is just the other end of the new axle. There's a great deal
of satisfaction when you reach this point.
|
Open ECM
Back to the ignition problem. The device in the center of the
picture is the "Engine Control Module" (computer). I have the
cover removed, and you can see two oscilloscope probes connected to
the inside of the engine control module. This is an example of
going to far.
|
Ready the Blinking Lights
Using the oscilloscope I couldn't tell for sure whether or not the
engine control module was any good. If the problem was showing up
it was to subtle when the engine was just idling in the garage.
The effect is much more pronounced when driving in heavy traffic on
a freeway. I didn't want to take the oscilloscope with me while
driving, so I wired some blinky lights into the engine control
module.
|
Schau die Blinkende Lichte Zu
This is what the blinky lights look like when driving. The success
story here is that I have now shown the problem is not in the
engine control module.
|
External Fuel Pressure Gauge
This is a classic example of the "Duct Tape Extra Gauges To The
Windshield" diagnostic methodology.
|
External Fuel Pressure Gauge From the Inside
This is what the gauge looks like from the inside. Now I know fuel
pressure is not the problem.
|