Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1995S10/T10 P/U 2WD L4-2.2L VIN 4REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION CABLETESTING AND INSPECTION
1995 Chevrolet S10/T10 P/U 2WD L4-2.2L VIN 4
Ignition Cable: Testing and Inspection
1995 Chevrolet S10/T10 P/U 2WD L4-2.2L VIN 4SECTION Testing and Inspection
VISUAL INSPECTION
1. Inspect the routing of the wires. Improper routing can cause crossfiring.
2. Inspect each wire for any signs of cracks or splits in the wire.
3. Inspect each boot for signs of tears, piercing, arc through, or carbon tracking. If the boot needs to be replaced, twist it a half-turn in either direction to break the seal before pulling on the boot to remove the wire.
SPARK PLUG WIRE RESISTANCE TEST
1. Disconnect both ends of each wire. Make sure the wire terminals are clean.
2. Set J 39200 on the high scale and connect it to each end of the wire being tested. Twist the wire gently while watching J 39200.
3. If J 39200 reads above 30,000 ohms (no matter how long the wire is), or fluctuates from infinity any value, replace the wire.
4. If the resistance of any wire is not within the following ranges, replace the wire being tested.
- 0 to 381 mm (0 to 15 in.) wire - 3,000 to 10,000 ohms.
- 381 mm to 635 mm (15 in. to 25 in.) wire - 4,000 to 15,000 ohms.
- 635 mm to 889 mm (25 in. to 35 in.) wire - 6,000 to 20,000 ohms.
- Longer wire - should measure about 5,000 to 10,000 ohms per foot.
1. Inspect the routing of the wires. Improper routing can cause crossfiring.
2. Inspect each wire for any signs of cracks or splits in the wire.
3. Inspect each boot for signs of tears, piercing, arc through, or carbon tracking. If the boot needs to be replaced, twist it a half-turn in either direction to break the seal before pulling on the boot to remove the wire.
SPARK PLUG WIRE RESISTANCE TEST
1. Disconnect both ends of each wire. Make sure the wire terminals are clean.
2. Set J 39200 on the high scale and connect it to each end of the wire being tested. Twist the wire gently while watching J 39200.
3. If J 39200 reads above 30,000 ohms (no matter how long the wire is), or fluctuates from infinity any value, replace the wire.
4. If the resistance of any wire is not within the following ranges, replace the wire being tested.
- 0 to 381 mm (0 to 15 in.) wire - 3,000 to 10,000 ohms.
- 381 mm to 635 mm (15 in. to 25 in.) wire - 4,000 to 15,000 ohms.
- 635 mm to 889 mm (25 in. to 35 in.) wire - 6,000 to 20,000 ohms.
- Longer wire - should measure about 5,000 to 10,000 ohms per foot.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.