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resolution of Chevy S10 Blazer ignition system problems It starts with a basic understanding of how the system works. Electrical power is supplied to the primary coil from your ignition coil by the ignition module, generating a magnetic field around the secondary coil in the ignition coil.
At a specific point (ignition timing) in the engine’s rotation, power is turned off to the coil. When this happens, the magnetic field collapses around the secondary coil and induces a voltage spike in the secondary coil. This voltage travels from the coil wire to the distributor cap, or the spark plug in a distributorless ignition system, and ignites the air/fuel mixture.
Troubleshoot Chevy S10 Blazer Ignition System
In order to solve problems in the Chevy S10 Blazer ignition system, follow the instructions below.
Paso 1:
Check the power in the primary circuit of the coil using the automotive circuit tester. Connect the black (negative) and red (positive) clips of the tester to the battery. Turn the key to the “Run” position and touch the end of the tester probe to the two coil leads by inserting the probe into the back of the electrical connector. This is called background polling.
Turn the ignition key to the “Start” position and watch the light on the tester. Both wires should show power. If there is no electrical power, replace the brown fuse on the back of the Blazer’s starter. If power shows on one wire and ground shows on the other wire, replace the coil.
Paso 2:
Remove the electrical connector from the coil and reprobe the ground wire. Turn the ignition key to the “Start” position and watch the tester. It should indicate a flashing ground signal. If no intermittent ground signal is indicated, replace the ignition module and pickup coil at the Chevy’s distributor.
Paso 3:
Remove the coil lead and hold the 12 volt test light close to, but not touching, the secondary coil tower that the coil lead was plugged into. Turn the ignition to the “Start” position and watch the coil. A bright spark should jump from the coil tower to the test light. A good ignition spark can produce a spark that can travel more than an inch to the test light. If the spark is weak or does not occur, replace the coil.
Paso 4:
Remove the spark plug wire from one spark plug, leaving it attached to the distributor cap (or coil pack on S10s with distributorless ignition systems) and turn the ignition key to the “Start” position. A bright spark should cross an inch or more into the engine block. If there is no spark present or there is a weak spark, replace the distributor cap, rotor, and spark plug wires.
resolution of Chevy S10 Blazer ignition system problems It starts with a basic understanding of how the system works. Electrical power is supplied to the primary coil from your ignition coil by the ignition module, generating a magnetic field around the secondary coil in the ignition coil.
At a specific point (ignition timing) in the engine’s rotation, power is turned off to the coil. When this happens, the magnetic field collapses around the secondary coil and induces a voltage spike in the secondary coil. This voltage travels from the coil wire to the distributor cap, or the spark plug in a distributorless ignition system, and ignites the air/fuel mixture.
Troubleshoot Chevy S10 Blazer Ignition System
In order to solve problems in the Chevy S10 Blazer ignition system, follow the instructions below.
Paso 1:
Check the power in the primary circuit of the coil using the automotive circuit tester. Connect the black (negative) and red (positive) clips of the tester to the battery. Turn the key to the “Run” position and touch the end of the tester probe to the two coil leads by inserting the probe into the back of the electrical connector. This is called background polling.
Turn the ignition key to the “Start” position and watch the light on the tester. Both wires should show power. If there is no electrical power, replace the brown fuse on the back of the Blazer’s starter. If power shows on one wire and ground shows on the other wire, replace the coil.
Paso 2:
Remove the electrical connector from the coil and reprobe the ground wire. Turn the ignition key to the “Start” position and watch the tester. It should indicate a flashing ground signal. If no intermittent ground signal is indicated, replace the ignition module and pickup coil at the Chevy’s distributor.
Paso 3:
Remove the coil lead and hold the 12 volt test light close to, but not touching, the secondary coil tower that the coil lead was plugged into. Turn the ignition to the “Start” position and watch the coil. A bright spark should jump from the coil tower to the test light. A good ignition spark can produce a spark that can travel more than an inch to the test light. If the spark is weak or does not occur, replace the coil.
Paso 4:
Remove the spark plug wire from one spark plug, leaving it attached to the distributor cap (or coil pack on S10s with distributorless ignition systems) and turn the ignition key to the “Start” position. A bright spark should cross an inch or more into the engine block. If there is no spark present or there is a weak spark, replace the distributor cap, rotor, and spark plug wires.
