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 MANUALSPLYMOUTH1990LASER RS, 2.0 R, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALSTARTERSTARTER - REDUCTION DRIVEBENCH TESTINGSTARTER MOTOR TESTS
1990 Plymouth Laser RS, 2.0 R, Standard
Starter Motor Tests
1990 Plymouth Laser RS, 2.0 R, StandardSECTION Starter Motor Tests
- Check pinion gear for freedom of movement by turning it on shaft. Check armature for freedom of movement by prying on pinion gear to engage it with shaft.
- If gear and armature do not rotate freely, starter should be disassembled. If pinion gear and armature rotate freely, proceed to NO-LOAD TEST in this article.
- No rotation and high current flow indicates:
- Connecting terminal or armature windings shorted to ground.
- Seized bearings.
- No rotation and no current flow conditions indicates:
- Open armature windings (inspect commutator for burned commutator bars after disassembly).
- Broken brush springs, worn brushes, protruding insulation between commutator bars, or other causes that could prevent good contact between brushes and commutator.
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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.