1990 Chevrolet Corvette 5.7L FI 8cyl
GM Corvette 1984-1996 Repair Guide
Starter - TESTING, REMOVAL & INSTALLATION
TESTING
No-Load Test
See Figure 1
1. With the carbon pile "OFF", make connections as shown in the accompanying figure. Close the switch, adjust the carbon pile to get 10 volts, and compare with the following RPM, current and voltage readings:
1984-87 5.7L (VIN 8) engine: No load test @ 10.6 volts-70-110 amps, RPM at drive pinion-6,500-10,700 rpm
1988 5.7L (VIN 8) engine: No load test @ 10.6 volts-90 amps (max.), RPM at drive pinion-3,300 rpm
1989-90 5.7L (VIN 8) engine: No load test @ 10 volts-45-90 amps, RPM at drive pinion-3,300-5,000 rpm
5.7L (VIN J) engine: No load test @ 10 volts-45-90 amps, RPM at drive pinion-3,300-5,500 rpm
5.7L (VIN P) engine: No load test @ 10 volts-45-90 amps, RPM at drive pinion-2,800-5,000 rpm
5.7L (VIN 5) engine: No load test @ 10 volts-45-90 amps, RPM at drive pinion-3,500-5,000 rpm
2. Rated current draw and no load speed indicates normal condition 2. of the starter motor.
Fig. Fig. 1: Starter motor no-load test connections Download File PDF
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