Finding an intermittent
Finding an intermittent problem is probably the most frustrating thing we
do. And because of that, it's also probably the problem that get's the
most parts "thrown" at it. Remember this. The intermittent problem does
have a cause. All we have to do is stop guessing and look for evidence.
Follow the evidence and it will lead you to the problem.
GM EVAP Vent Solenoid Testing
2002 Chevy Silverado 4.8L with a P0449 EVAP Vent Solenoid trouble code. For
more info. see www.autocomputerstroubleshooting.com
BMW Service - Charcoal Canister - How & Why to eliminate it
The charcoal canister on your BMW motorcycle is useless. Yes, I do supoport
the environment. These 'soup cans' are not found on BMW's in other
countries and they are detrimental to the performance of your engine and
costly to your wallet when they clog & fail. Remove it and enjoy your
machine as it was intended.
Evaporative Emissions Check Engine Light
A video that may help others to pass an MVD Emissions inspection. The video
contains information about OBD2 data codes and explains in part, the
evaporative emissions system in today's automobile
How to Fix A Check Engine Light : P0455 Emissions Purge Valve Replacement
A check engine light can be caused by many different problems. Fortunately
the ECM will generate and store a code when a component fails or near
failure. This points us in what direction the issue is and guides on the
The automobile consist of:
• Fuel System: Purpose is to deliver fuel to the engine. It consists of
the fuel tank, pump, gauge/sensor, filter, pressure regulator and
• Air Intake System: Purpose is to clean and direct outside air into the
engine. It consist of air filter, ducts, air plenum and intake manifold.
• Exhaust System: Purpose is to
direct Exhaust gasses out of
combustion out of engine. It consists of the Exhaust manifold, converters, pipes and
• Cooling System: Purpose is to remove excess heat from the engine. It
consists of water pump, hoses, radiator, thermostat, cooling fan and
coolant recovery tank. Also the oil system serves as a cooling system as
well as a lubricating system. It consist of oil pump, pan, filter and
1. Clutch: Purpose is to connect the engine and transmission together. It
consists of clutch drive disc, driven disc, release bearing, clutch fork,
cable, slave cylinder, master cylinder. There are three types of clutch
systems: mechanical, cable and hydraulic.
2. Transmission: Purpose is to match engine speed to road speed. Two types
used are manual or automatic. These consist of gears, linkages, cables and
converters for automatics. A manual is connected to the clutch by a
flywheel and automatic by a flexplate.
3. Driveshaft: Purpose is to connect the transmission to the rear axle. It
consists of a slip yoke, shaft and universal joints.
4. Rear axle differential: Purpose is to change the angle of motion from
engine to the wheels. It also divides torque between the wheels. It
consists of a ring and pinion gear, carrier, bearings, crush sleeve and
5. Wheels/Tires: Purpose is to provide traction to the road as well as
carry the weight of the vehicle.
Vehicle Control Systems:
1. Brakes: Purpose is to slow and stop the vehicle. It consists of master
cylinder, brake Booster (vacuum or
hydraulic), calipers, drums, pads and rotors.
2. Steering: Purpose is to direct vehicle in the required direction.
Consists of steering gear (rack & pinion), steering wheel, column,
inner/outer tie rods, pump, reservoir, hoses and pipes.
3. Suspension: Purpose is to provide stability and handling while also
providing comfort to the ride. Consists of shocks, struts, sway bars, end
links, springs, trailing arms and bushings.
1: Heating Ventilation Air Conditioning (HVAC): Heats and cools interior
air to passenger comfort. Also circulates outside and inside air.
• Air Conditioning: Consist of condenser, compressor, accumulator
(receiver/dryer) orifice, expansion valve, hoses, evaporator, controls,
actuators and modules.
• Heating: Consists of heater core, valves, hoses and switches.
1. Power Generation: Creates electrical power to run all the electrical
systems. Consists of the alternator.
2. Power storage: Stores unused power to start the car and supply voltage
to the alternator to create more electricity.
• Both systems consist of wiring, harnesses, fuse, relays and modules.
Clear check engine light for less than 5 dollars
More Tutorials on my CHANNEL: http://www.youtube.com/user/moccina
*This video is an EXPERIMENT I wanted to try on my car, and is for
INFORMATIONAL purposes ONLY. This fix is for off-road use. The content
shown in this video is not intended to encourage emissions test cheating.
I enjoy the process of testing theory because you always learn something
new, regardless of the outcome.
Using a spark plug defouler kit, I install a "buffer" in between the
downstream oxygen sensor and the catalytic converter. Quite often,
frustrated car owners get the P0420 code for reasons other than a bad cat.
I have heard of people getting the code just because they removed the
converter and reinstalled it. It can also happen if you run your vehicle
out of gas etc... etc...
It is also common for car owners to get the P0420 code, replace the
converter, and both o2 sensors-- only to have the code come back after 1000
miles or so. This can be a very frustrating, time consuming and of
course-- expensive venture. Here is one way to resolve the issue. Good
luck and have fun!
Finding Engine Vacuum Leaks With A Cigar
Scotty Kilmer, mechanic for the last 43 years, shows how you can find
engine vacuum leaks in your vehicle using cigar smoke. It really works as
well as a thousand dollar smoke machine.
Removing broken exhaust studs
Broken Exhaust studs seem to be a
predictable problem on older vehicles. Here's the best way I've found to
get them out. By the way, it works on most any kind of broken off bolt as
long as you have enough sticking out where you can get a grip on it.
Also, don't waste time with vise-grips. Get a good quality set of
gripping pliers. You'll be glad you did.
Stall at idle only
Most GM 2.4 engines will have this problem. It stalls at idle only, never
when driving, always restarts AND NO CODES. You can spend a lot of
time searching for the problem and searching the scanner for help. Look
at this common problem, it just might be what you need to fix it.
How to find a misfire without a scanner 3
Scanners are great tools, but sometimes they aren't any help. That's when
understanding the system, and how to test it is all you have. Here are
some ways to find the problem