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Auto 1210
Unit 4 Chapter Questions
Chapters 7 & 8
[1] Explain in your own words the term Inductive Reactance.
2 pts. [2] When the magnetic field of a coil cuts across an adjacent coil’s winding, a voltage is induced into the adjacent coil and this action is called ______________________________________________________. 1 pt.
[3] What is the difference between True Transformer Ignition Coil and a Conventional or Tapped Ignition Coil Type Transformer?
____________________________________________________________________________________2 pts.
[4] A Hall-Effect piston position sensor uses magnetism to determine the position of the piston in the cylinder. The Pulse Generator (Pickup Coil) type piston position sensor also uses magnetism todetermine the piston position. In the space below explain how both sensors use magnetism to determine piston position yet they are very different. Explain the differences.
2 pts. [5] Optical Distributors use two very similar semiconductor devices that act opposite in their action todetermine piston position. What are the names of these semiconductors and how do they work opposite each other?
2 pts.
[6] Confusion has been expressed in the automotive industry created between Waste Spark Ignition, Coil on Plug Ignition and Distributor Ignition. The ASE J1930 white paper suggests that we use the followingacronyms to solve the problem: EI and DI. Explain the Terms EI and DI and how they help us better identify the type of ignition system we are working on.
2 pts.
[10] The Firing Order of an engine is critical to the ignition system. If the firing order is incorrect thetechnician and the driver will experience misfire, hesitation, backfire and poor mileage. Not all vehicles from one manufacturer have the same firing order. Using the DRS, check out the firing order anddirection of distributor rotation of the following engines.
[1] 1997 Ford Taurus 3.4 L SHO VIN# ( N ) Firing Order ______ ______ ______ ______ ______ ______ ______Direction of Rotor Rotation _________________________________ [2] 1999 Ford Mustang 4.6 L VIN# (X) Firing Order ______ ______ ______ ______ ______ ______ ______ [3] 1993 Buick Century 3.3 L VIN# (N) Firing Order ______ ______ ______ ______ ______ ______ ______ [4] 1993 Pontiac Firebird 3.4 L VIN# (S)Firing Order ______ ______ ______ ______ ______ ______ ______ [5] 1992 Mitsubishi Eclipse 1.8 L VIN# (T) Firing Order ______ ______ ______ ______Direction of Rotor Rotation _________________________________ [6] 1997 Honda Accord 2.7 L Engine #C27A Firing Order ______ ______ ______ ______ ______ ______Direction of Rotor Rotation _________________________________ 6 pts. [11] To prevent any problems associated with high-voltage spark plug wires, be sure to route them as manufactured using all the factory holding brackets and wire combs. In the space below list the types ofdamage caused by poor ignition wire routing.
2 pts [12] There are three stages of Ignition Timing. They are: [1] ___________________________________________________________________________ [2] ___________________________________________________________________________ [3] ___________________________________________________________________________ 3 pts.
[13] Identify the parts of the basic ignition waveform below:
[1] A= ______________________________________________________________________________
[2] B= ______________________________________________________________________________
[3] C= ______________________________________________________________________________
[4] D= ______________________________________________________________________________
3 pts.
[14] In the space below explain how to determine rotor gap resistance.
2 pts.
[16] To calculate ‘ Dwell on a Buick 6 cylinder ignition system’ you: (Show your work).
2 pts. [17] In the raster pattern below #4 Cylinder has a problem. Explain what the most likely cause of this condition is and what your next diagnostic test should be.
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
2 pts.
