The video we expose the internal of the Chevrolet LT1 front engine mount electronic distributor (hi-voltage).Part of a Complete Tune-up processor. HERE we explain the inner workings of Hi-Voltage Distribution Part.
This component can be found on the corvette,caprice,GMC trucks,Roadmaster,Cadillac.
Subject: theory and testing of Opti-spark(optical) systems
Contributing Source: General Motor service manuals and training materials
The General Motor Opti-spark ignition system is used on 1994-96 4.3-liter L99 (VIN W) V-8 engine and on 1992-97 5.7-liter LT1 (VIN P) V-8 engines. The Opti-spark distributor is mounted on the front of the engine block, above the crankshaft. The distributor is driven by the camshaft.
Opti-spark system rely on two optical cam position (CMP) sensors mounted inside the distributor. Beginning in 1996, Opti-spark equipped vehicles also included a crankshaft position (CKP) sensor mounted at the bottom of the timing cover, The PCM uses this CKP sensor only for misfire diagnosis, not ignition timing. This sensor is not part of the Opti-spark system.
The Opti-spark CMP sensor provide signal to the PCM (Powertrain Control Module) for ignition timing control. These sensors detect slots in the crank-driven signal disk. One CMP sensor detects 360 equally spaced slots per camshaft revolution, for high-resolution timing control. The other CMP sensor detect eight signal disc slots, the CMP reference signal toggle between 0.0 and 5.0 volts. The PCM compares the two CMP signal to determine if one of the inputs is not being received.
Teach your child about circuits by using this fun and easy aluminum foil circuit activity.
Materials:
- Aluminum Foil
- Light bulb
- Batteries
- Paper
- Pencil
Instructions:
1) Design your circuit (Note: avoid crossing the circuit unless you plan to make it three dimensional – always a plus for the higher level students)
2) Make wires out of foil
3) Connect the light bulb to the foil (make sure to connect the foil in the correct areas. For incandescent light bulbs, connect one wire to the threads of the bulb and the other wire to the nub).
4) Attach batteries (for LED lights, the current has to flow in the correct direction. The shorter end of the LED is the negative side)
5) Light up! The light should light up.
Troubleshooting
1) Check the connections. A loose or broken wire might be the culprit. Make sure you’re connected to where you need to be.
2) Check the material. Does the battery work in something else? What about the light?
3) Check for short circuits. If a wire on one side is touching the wire on the other side, you could be short circuiting your circuit. This essentially means that the electricity has found an easier, faster way to go in a circuit and will no longer flow through the light.
4) Check the voltage. Do you have the necessary number of volts to light up the light? Too little will not turn the light on. Too much can cause an overload.
Safety
1) Make sure to have dry hands and a clean work environment.
2) DO NOT leave the circuit connected. When you are done, disconnect as this can overheat the batteries and present a fire hazard.
3) Use items that have a low voltage requirement (higher voltages present higher risks).
4) Avoid using too many volts as that can damage the electronic component and you!
5) Parental Supervision is advised.