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 MANUALSCHEVROLET1985S10/T10 BLAZER 4WD L4-151 2.5LREPAIR AND DIAGNOSISSTARTING AND CHARGINGCHARGING SYSTEMALTERNATORSPECIFICATIONSMODELS 1100250-1105647
1985 Chevrolet S10/T10 Blazer 4WD L4-151 2.5L
Models 1100250-1105647
1985 Chevrolet S10/T10 Blazer 4WD L4-151 2.5LSECTION Models 1100250-1105647
| Model Number | 1100250 | 1105368 | 1105492 | 1105504 | 1105516 | 1105575 | 1105621 | 1105623 | 1105624 | 1105627 | 1105633 | 1105635 | 1105647 |
| Field Current @ 80°F. 12 Volts | 4.5-5 Ampere (A) | 4.5-5 Ampere (A) | 4.5-5 Ampere (A) | 4.5-5 Ampere (A) | 4.5-5 Ampere (A) | 4.5-5 Ampere (A) | --- | --- | --- | --- | --- | --- | --- |
| Amperes At 2000 R.P.M. | 51 Ampere (A) | 51 Ampere (A) | 56 Ampere (A) | 38 Ampere (A) | 38 Ampere (A) | 37 Ampere (A) | --- | --- | --- | --- | --- | --- | --- |
| Amperes At 5000 R.P.M | 81 Ampere (A) Note: At 7000 Alternator RPM | 81 Ampere (A) Note: At 7000 Alternator RPM | 103 Ampere (A) Note: At 7000 Alternator RPM | 70 Ampere (A) Note: At 7000 Alternator RPM | 70 Ampere (A) Note: At 7000 Alternator RPM | 60 Ampere (A) Note: At 7000 Alternator RPM | --- | --- | --- | --- | --- | --- | --- |
| Rated Hot Output Amperes | 78 Ampere (A) | 78 Ampere (A) | 94 Ampere (A) | 66 Ampere (A) | 66 Ampere (A) | 56 Ampere (A) | 66 Ampere (A) | 78 Ampere (A) | 56 Ampere (A) | 78 Ampere (A) | 56 Ampere (A) | 66 Ampere (A) | 78 Ampere (A) |
RENDER: 1.0x
NO RELATED
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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.